| Entries |
| Document | Title | Date |
|---|
| 20080198525 | Method for Current Protection of a Power Switch and Apparatus for Implementing Same - A method for operating protection circuitry for a power switch ( | 08-21-2008 |
| 20080232016 | Power control circuit with alarm - A power control circuit with alarm, comprising a MCU control circuit, wherein further comprising a step down commute circuit, a power detecting circuit, a voltage regulate circuit, a complementary comparison circuit and a feedback compensating circuit, a cut-off control circuit. Said power detecting circuit and said step down commute circuit are connected in parallel. The input ends of power complementary comparing circuit and temperature negative feedback compensating circuit are connected to the output end of the power detecting circuit. The output ends of power complementary comparison circuit and temperature negative feed back compensating circuit are connected to the input end of MCU control circuit. Said step down commute circuit, voltage regulate circuit, MCU control circuit are connected in turn and in cascade. The output end of MCU control circuit is connected to the input end of power cut-off control circuit. The power cut-off control circuit are connected to the control switch on the power supply loop of the electrical equipment. It is a small power control circuit with alarm, which is easy to install, able to control the rated power below 190W. | 09-25-2008 |
| 20080297965 | CONTROL SYSTEM AND METHOD WITH CONSTANT MAXIMUM CURRENT FOR POWER CONVERTER PROTECTION - System and method for protecting a power converter. The system includes a first comparator configured to receive a threshold signal and a first signal and to generate a comparison signal. The first signal is a sum of a second signal and a third signal, and the third signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and control the input current for the power converter. An amplitude for the first signal becomes larger if an amplitude for the input voltage becomes larger. The second signal is generated by receiving an input voltage for the power converter, converting the received input voltage to a fourth signal, and converting the fourth signal to the second signal. | 12-04-2008 |
| 20080304196 | Electrical Circuit With Incendive Arc Prevention Means - An electrical circuit comprising a power supply, a load and an incendive arc prevention means comprising a monitoring means and an isolation means, in which the monitoring means monitors the electrical circuit by means of a reactor means, in which if a short circuit with the potential to cause an incendive arc occurs in the electrical circuit the reaction of the reactor means is detected by the monitoring means and the isolation means fully or partially isolates the power supply from said short circuit, such that an incendive arc cannot occur, in which if an event with a current and/or voltage pattern which is characteristic of a propagating non-incendive arc occurs in the electrical circuit between the power supply and the load, the reaction of the reactor means is detected by the monitoring means, and the isolation means fully or partially isolates the power supply from said event, such that an incendive arc cannot occur. | 12-11-2008 |
| 20090009920 | Abnormality detecting device of electric power converting device and abnormality detecting method - Each of three-phase arm of an inverter has first and second switching elements connected in series together at a connection point to the corresponding phase coil of the three-phase motor. Control device turns on the first switching element of the i-th (i is a natural number smaller than four) for a predetermined time period, and determines that the second switching element of the i-th arm has a short fault, when an overcurrent exceeding a predetermined threshold is detected within the predetermined time period. The predetermined time period is shorter than a time period from a time point of turning on the first switching element of the i-th arm to a time point of attaining the predetermined threshold by a current flowing through a path extending from a power supply line through the second switching element of the remaining arm other than the i-th arm to a ground line. | 01-08-2009 |
| 20090059457 | PROTECTING CIRCUIT - A protecting circuit includes a semiconductor switch that is provided between a power source and a load, a current detecting unit that detects an electric current flowing in the semiconductor switch, a protecting unit that controls the semiconductor switch to be turned off when the current detected by the current detecting unit exceeds a threshold value, a temperature detecting unit that detects an ambient temperature, and a threshold value changing unit that changes the threshold value so as to lower the threshold value as the temperature detected by the temperature detecting unit becomes higher. | 03-05-2009 |
| 20090067109 | OPERATING AND CONTROLLING INSULATED GATE BIPOLAR TRANSISTORS IN HIGH SPEED FAILURE MODE SITUATIONS - A circuit and method to provide dynamic fault protection to transistors are disclosed. The fault protection may be particularly suited for protecting insulated gate bipolar transistors (IGBTs). | 03-12-2009 |
| 20090109588 | Load driver with wire break detection circuit - A load driver includes a transistor coupled in series with a load, a control circuit for controlling the transistor, and a wire break detection circuit. The wire break detection circuit includes a current detection device and a wire break detection device. The current detection device is coupled between a first point in a wire connecting the control circuit to a ground terminal and a second point in a path through which a load current flows. The wire break detection device determines that a break occurs in the wire, when the current detection device detects an electric current flowing from the first point to the second point. | 04-30-2009 |
| 20090109589 | HIGH SPEED AUTOMATIC CIRCUIT BREAKER FOR PROTECTION - Disclosed is a high speed automatic circuit breaker in which a Rogowski coil is integrated with a voltage sensor, a microprocessor processes voltage and current signals through an electronic transformer to reduce a size and costs, and an algorithm of counting, charging, and trip is realized for coordination with reclosers of a power substation and a line. The circuit breaker includes a main body to receive an electric power when fixed and moving contacts contacting each other, to operate the moving contact using an trip coil according to a trip control signal to trip, and to input the electric power according to an closing control signal, and a control unit to monitor current of a lead-in line and voltage to generate a control signal of controlling the main body. Thus, costs and installing space can be reduced and a customer fault is fundamentally prevented from being propagated to the line. | 04-30-2009 |
| 20090128974 | Drive Circuit for Switching Device - A drive circuit that controls a switching device ON/OFF and a soft cutoff command circuit that gradually decreases the gate terminal voltage of the switching device when short circuit of the switching device is detected. Additionally, an ON-pulse retention command circuit retains the output of the drive circuit ON when the gate terminal voltage is judged to have exceeded a specified value by a gate voltage judgment comparator that detects the gate terminal voltage of the switching device. | 05-21-2009 |
| 20090213514 | Galvanic isolator - In one general aspect, a galvanic isolator is disclosed. It includes an isolation circuit with at least two diodes placed back-to-back between the input line and the output line. A leakage current detection element is provided between the input line and the output line. A protection circuit is operatively connected to the leakage current detection element. | 08-27-2009 |
| 20090231771 | Magnetic Induction Grid as an Early Warning Mechanism for Space Based Microelectronics - A system for protecting an electronic device from cosmic rays includes a frame in which the circuit is disposed, a cosmic ray detection circuit and a protection circuit. The cosmic ray detection circuit is supported by the frame and is spaced apart from the circuit. The cosmic ray detection circuit is configured to assert an incoming cosmic ray signal when a cosmic ray interacts with the cosmic ray detection device. The protection circuit is coupled to the incoming cosmic ray signal and is configured to cause the electronic device to enter a protected state when the cosmic ray signal is asserted. | 09-17-2009 |
| 20090251836 | CIRCUIT BREAKER METER - An electricity metering arrangement comprises a circuit breaker with an installed light indicating electricity meter displayed on the front of the unit. The electricity meter comprises a light indicating unit which may be a LED light or LCD display. The circuit breaker based on the invention is combined with a circuit breaker housing ( | 10-08-2009 |
| 20090268363 | POWER SUPPLY, IMAGE FORMING APPARATUS, AND ELECTRIC CURRENT SUPPLY METHOD - This invention provides a power supply which supplies an AC electric current to the coil of a heating unit employing the electromagnetic induced heating method via a connector connecting a plurality of wires, and a method for the power supply. The method includes the steps of supplying electric currents to the coil via 1st and 2nd wires from 1st and 2nd electric current supply units and detecting feedback electric currents via 3rd and 4th wires through the coil. Whether an electric current is abnormally supplied to the coil is monitored on the basis of these detected electric currents. It is controlled in accordance with the monitoring result to stop driving the 1st and 2nd electric current supply units and supply an electric current to the coil. | 10-29-2009 |
| 20090273872 | FAULT DETECTION FOR BATTERY CHARGERS - A method of fault detection for battery chargers includes sensing a charge current applied to a battery with a resistive element. The method includes measuring a voltage across the resistive element. The method includes generating a trigger signal when the measured voltage across the resistive element exceeds a predetermined value. The method includes generating from the trigger signal an interrupt signal for a microprocessor. The method includes initiating an over-current handling routine in the microprocessor. | 11-05-2009 |
| 20090273873 | DEVICE FOR DETECTING THE THREE STATES OF A CIRCUIT BREAKER - A device for detecting three states, namely ‘on’, ‘off’ and ‘triggered’ of an electric circuit breaker. The device includes a mobile magnetic device, movable between three positions corresponding to the three states of the circuit breaker, and at least one permanent magnet generating a magnetic field provided with magnetic field lines for driving two DIP switches via the magnetic effect. In each of the magnetic device's positions, the two DIP switches are controlled in either an open or closed position to form a specific combination representing one of the three states of the circuit breaker. | 11-05-2009 |
| 20090279222 | HYDRAULIC VALVE CONTROL CIRCUIT AND METHOD FOR CHECKING THE FUNCTION OF A HYDRAULIC VALVE CONTROL CIRCUIT - A hydraulic valve control circuit of a hydraulic valve comprises an external voltage supply, an output stage having a voltage supply input and at least one output configured to actuate an actuator of the hydraulic valve, an overcurrent protective device disposed in a path between the external voltage supply and the voltage supply input, an enable input configured to activate and deactivate the output stage, and a switch configured to connect the at least one output to a fixed potential when the output stage is deactivated. | 11-12-2009 |
| 20090284885 | Semiconductor device with overcurrent protection circuit - A semiconductor device | 11-19-2009 |
| 20090303649 | ENHANCED CHARGER OVER VOLTAGE PROTECTION FET - An integrated battery charger protection circuit incorporates a charge control power FET for series connection in the battery load current path from a DC supply input terminal to a controlled DC output terminal. The circuit has a gate drive input terminal connected to the gate of the charge control power FET and further includes protective circuitry adapted to disable the DC output terminal in a fault condition detected within the integrated circuit. The controlled DC output terminal and the gate drive input terminal are connectable to the external charge control host circuit the same way as corresponding terminals of a discrete power FET, in particular of p-channel type. | 12-10-2009 |
| 20100008006 | POWER DEVICE AND SAFETY CONTROL METHOD THEREOF - Disclosed herein are a power device and a safety control method thereof which can detect an abnormal state of a power line. The power device includes a detector to detect current of alternating current (AC) power applied to an electronic appliance, and a controller to compare a value of the detected current with an abnormal current reference value set according to an operation mode of the electronic appliance and interrupt the AC power if the detected current value is larger than the abnormal current reference value. The controller changes the abnormal current reference value according to the operation mode. | 01-14-2010 |
| 20100008007 | Single-Supply Single-Ended High voltage Peak Detector - A device for current detection is disclosed and includes a protection circuit having a current input provided via a positive input and a negative input arranged in parallel to the positive input, a pair of diodes communicatively coupling the positive input to the negative input, wherein the pair of diodes are configured to protect an operational amplifier from an overvoltage and negative voltages, and a peak detector in communication with the protection stage, wherein the peak detector is configured to receive an output provided by the operation amplifier of the protection stage, and wherein the peak detector is configured to create a peak detector output representative of the current input. | 01-14-2010 |
| 20100014204 | Method and Circuit for Protecting a MOSFET - A method and a corresponding circuit protect a power MOSFET from overload when switching the MOSFET off. The current through the MOSFET is compared to a reference signal depending on the time since switching the MOSFET on. | 01-21-2010 |
| 20100027178 | ELECTRIC/ELECTRONIC CIRCUIT SYSTEM WITH CONDUCTIVE GLASS MEMBER - [Problems] To provide a means for preventing electric/electronic materials from losing or degrading functionality when electrically conductive glasses are used as such electric/electronic materials. | 02-04-2010 |
| 20100085674 | Hardware Based Over-Current Protection Circuitry for Power Distribution Systems - A power distribution unit that switches off power outlets in the event of an over-current condition by using circuitry that measures how long input current has exceeded a threshold and sending a reset signal to the power outlets when input current has exceeded the threshold for a predetermined time duration. | 04-08-2010 |
| 20100149711 | Circuit Breaker With Bistable Display - A circuit breaker is disclosed that has a bi-stable display that maintains an indication of a fault condition after power is interrupted to the circuit breaker. The circuit breaker has a microcontroller that receives power derived from a line current that passes through the circuit breaker or the line voltage when the circuit breaker is in an on state. The bi-stable display is electrically coupled to and controlled by the microcontroller. A tripping mechanism trips the circuit breaker in response to detection of a fault condition. The tripping mechanism trips the circuit breaker in response to receiving a trip signal from the microcontroller. The microcontroller is programmed to modify the bi-stable display when sending the trip signal to the electronic switching device. The bi-stable display shows an indication of one of the several fault types that would have caused the circuit breaker to trip. The bi-stable display continues to display the fault-type indication after the circuit breaker has tripped and power is interrupted to the microcontroller. | 06-17-2010 |
| 20100165531 | Fire Protection Device For Domestic Appliances - A fire protection device for preventing damage to a domestic appliance from a malfunction which occurs in the appliance. The fire protection device includes at least one fault current circuit breaker, which disconnects the electrical supply from the appliance when a fault current is sensed. The fire protection device also includes at least one gas sensor which also disconnects the electrical supply from the appliance when a predetermined quantity of a control gas is sensed in the appliance. | 07-01-2010 |
| 20100172062 | SOLID STATE POWER CONTROL MODULE WITH REMOVAL DETECTOR - A solid state power control module contains non-volatile memory. A switch for opening is provided to break a supply of power to a component. The switch is operable to trip (open) when an undesirable condition is detected, and further to be opened upon receiving a control signal. A status of the switch is stored in the non-volatile memory. A detector is provided for identifying when a module has been mounted in a housing, and communicates with the non-volatile memory if it is determined that the module is newly installed in a housing. A system and method are also claimed. | 07-08-2010 |
| 20100182725 | Circuit Arrangement and Method for Monitoring Wheel Speed Sensors in a Motor Vehicle Control Device - Circuit arrangement ( | 07-22-2010 |
| 20100220421 | SHORT CIRCUIT CURRENT RATCHETING IN SWITCH MODE DC/DC VOLTAGE REGULATORS - A regulator with a high side pass device and a low side pass device coupled in series to the high side pass device is disclosed. The apparatus further includes a control module coupled to the high side pass device and the low side pass device. The control module is coupled to the high side pass device and the low side pass device to control the high side pass device and the low side pass device. The control module is operable to lock out the high side pass device under certain conditions. | 09-02-2010 |
| 20100284117 | Power distribution systems - A power distribution system that can be used in naval ships and submarines includes a first power generation system including at least one power source for supplying power to a first service distribution system that includes at least one dc distribution busbar for carrying a distribution voltage and a distribution current and at least one switchboard that includes protective switchgear with contacts. A zonal power distribution sub-system includes a zonal power supply unit for supplying power to at least one electrical load and a zonal energy store connected to the at least one switchboard of the first service distribution system for supplying power to the zonal power supply unit. The at least one power source is regulated according to a power source foldback and stabilizing characteristic and a power source starting characteristic. The at least one electrical load is regulated according to a load shedding and stabilizing characteristic. | 11-11-2010 |
| 20100302698 | OVERCURRENT PROTECTION CIRCUIT AND METHOD OF PROTECTING POWER SUPPLY CIRCUIT - In some embodiments, an overcurrent protection circuit is configured to operate in accordance with operation modes including a first operation mode in which when the power supply circuit is activated, the capacitor is charged until the terminal voltage reaches a first voltage, a second operation mode in which depending on a time period in which a current flowing through an output transistor of the power supply circuit exceeds a predetermined value, the capacitor is charged so that the terminal voltage increases from the first voltage toward a second voltage, and the power supply circuit is shut down when the terminal voltage reaches the second voltage, and a third operation mode in which when the power supply circuit is shut down, the capacitor is discharged until the terminal voltage reaches a third voltage, and the shutdown of the power supply circuit is released when the terminal voltage reaches the third voltage. | 12-02-2010 |
| 20100315750 | OVER-CURRENT PROTECTION CIRCUIT WITH FOLDBACK CAPABILITY - An over-current protection circuit is disclosed that provides a current limit threshold using resistors in the path of a scaled mirror current of a load current. The protective circuit has a first state that passes a supply source to a device, but when the threshold is reached the circuit becomes a feedback circuit that allows only a set final current to be passed to the device. When the load current reaches the threshold, the mirror current reaches a corresponding threshold that triggers a comparator and circuitry that then limits and fold backs the load current. | 12-16-2010 |
| 20100328831 | Method and Circuit for Over-Current Protection - In one embodiment the present invention includes an over-current protection method. The method comprises generating a switching signal, starting and stopping a timer, sensing a current through a switch, comparing a response time to a reference time, and generating an over-current alarm signal. The switching signal activates one or more switches in a switching regulator. The timer is started in response to the switch being activated and is stopped in response to the sensed current exceeding a threshold. The response time indicates the time period between the starting and the stopping of the timer. The over-current alarm signal is generated if the response time is less than the reference time. | 12-30-2010 |
| 20110019322 | POWER SUPPLY APPARATUS AND METHOD - A power supply apparatus and method are provided. A conversion component outputs a first current having a predetermined phase region, an output component outputs a load voltage, a sense component senses a second current value, and a switch element allows current to flow in a first state and impedes current in a second state. The switch element changes between states based on a drive signal forcing the switch into the second state when the first current is in the predetermined phase region and the second current value exceeds a threshold indicating an overcurrent condition. A region determination circuit determines whether the first current is in the predetermined phase region and produces a phase region signal. An overcurrent detection circuit senses the second current value, determines whether it exceeds an overcurrent condition threshold, and produces an overcurrent signal. A protection circuit causes the drive circuit to switch the drive signal. | 01-27-2011 |
| 20110019323 | PROTECTIVE DEVICE FOR LOAD CIRCUIT - A protective device for a load circuit as instantly cuts off only the load circuit and protects this load circuit in a case where a dead short-circuit has occurred in the load circuit, is provided. | 01-27-2011 |
| 20110026180 | INTEGRATOR AND CIRCUIT-BREAKER HAVING AN INTEGRATOR - An integrator and a circuit-breaker are disclosed, the integrator being in the form of a passive symmetrical low-pass filter having an integration capacitor. In order to make it possible to temporally integrate an electrical signal in an improved manner, it is proposed in at least one embodiment that provision be made of a differential amplifier having two amplifying elements each having an input, that the two amplifying elements be coupled to one another in order to generate a differential signal, that the inputs of the two amplifying elements be connected to one another via the integration capacitor, and that each amplifying element be positively fed back to its input via a feedback loop in such a manner that the two amplifying elements together form a negative input resistance in parallel with the integration capacitor. | 02-03-2011 |
| 20110026181 | PROTECTIVE SWITCHING DEVICE FOR MONITORING THE ELECTRICAL CURRENT FLOW TO AN ELECTRICAL USER AND METHOD FOR MONITORING THE ELECTRICAL CURRENT FLOW TO AN ELECTRICAL USER BY WAY OF A PROTECTIVE SWITCHING DEVICE - A protective switching device is disclosed for monitoring the electrical current flow to an electrical user, including a switching functionality, an excess current triggering functionality and a short circuit triggering functionality. In at least one embodiment, the protective switching device includes a first microcontroller with a first input signal filter, wherein the first microcontroller is configured for monitoring the excess current triggering functionality and wherein a second microcontroller is provided with a second input signal filter that is configured for monitoring the short circuit triggering functionality, wherein the two input signal filters are designed differently, and wherein the switching functionality is provided in one of the two microcontrollers. A method is further disclosed for monitoring the electrical current flow to an electrical user by way of a protective switching device. | 02-03-2011 |
| 20110069421 | METHOD AND APPARATUS FOR PROVIDING DIFFERENTIAL PROTECTION FOR AN ELECTRICAL LINK IN A MEDIUM, HIGH, OR VERY HIGH VOLTAGE NETWORK - A method and a differential protection apparatus for an electrical link in a medium, high or very high voltage power distribution network. This method, in which two differential protection devices are disposed at the two ends (A, B) of said link, includes a step during which a comparison is made between the current measured locally and the current measured remotely, after said devices have been resynchronized by phase shifting the data received from the end situated remotely by one half of the sum of the outward and return propagation times; and a second step during which, if an angular phase difference is found to exist between two currents after resynchronization, automatic compensation is effected by servocontrolling the angle of the current vectors. | 03-24-2011 |
| 20110102958 | ELECTRICAL LOAD CENTER - A low voltage DC power supply is provided in a load center for distributing electrical power from electrical power utility lines to multiple branch circuits via a load center bus connected to the utility lines, each of the branch circuits having a circuit breaker coupled to a processor that is shared by multiple circuit breakers in the load center. The low voltage DC power supply includes a switch mode low voltage power supply connected to the processor for supplying the processor with a DC power input, and a line-derived power supply and a fault-derived power supply coupled between the utility and the switch mode power supply for supplying DC inputs to the switch mode power supply. The magnitude of electrical current supplied to the multiple branch circuits from the load center bus is determined by producing signals representing the current levels in the bus at successive locations on opposite sides of each connection of the bus to the multiple branch circuits, and determining the current supplied to each branch circuits from those signals. | 05-05-2011 |
| 20110110009 | SWITCH CIRCUIT HAVING OVERCURRENT DETECTION FUNCTION - A first overcurrent detecting circuit outputs a first time-up signal when a time period, in which an electric current flowing into the wire harness is greater than the first threshold, reaches a first duration time, which corresponds to a first threshold. A second overcurrent detecting circuit outputs a second time-up signal when a time period, in which an electric current flowing into the wire harness is greater than the second threshold, reaches a second duration time, which corresponds to a second threshold. The second threshold is less than the first threshold. The second duration time is longer than the first duration time. A determination circuit determines that an overcurrent flows into the wire harness and cause a control circuit to deactivate the switching element when inputting at least one of the first and second time-up signals. | 05-12-2011 |
| 20110141642 | Electromagnetic Load Circuit Failure Diagnosis Device - A layer short-circuit of a switch element such as a FET included in an electromagnetic load circuit is detected to accurately perform a failure diagnosis of the electromagnetic load circuit. A failure diagnosis circuit | 06-16-2011 |
| 20110141643 | Electric System - An electrical system having at least one load that is protected by a protective device, where a tripping parameter, i.e., a tripping current of the protective device can be set. A control unit is provided to which a measured current value of the current consumed by the at least one load is supplied, where the control unit generates a limit value, which is provided to the protective device for setting a tripping parameter as a function of the characteristic curve of the measured current value. The control unit thus permits ongoing adjustment of the tripping parameters, i.e., the release current, according to the actual operating conditions. | 06-16-2011 |
| 20110267731 | Over-current protection for a switch mode class D audio amplifier - Circuits and methods for over-current protection of pulse-width modulation systems such as switch mode class D audio systems, DC-to-DC converters, or switch mode power supplies have been disclosed. Over-current protection has been achieved by introducing supply-scalable pulses to bring the modulation index of PWM pulses to a safe level. Additionally to the over-current protection a recovery circuit and method to be applied right after an over-current situation has been disclosed. | 11-03-2011 |
| 20110279941 | HALF-BRIDGE CIRCUIT PROTECTED AGAINST SHORT CIRCUITS AND HAVING SEMICONDUCTOR SWITCHES - A circuit arrangement with two semiconductor switches connected in series between a first potential connection and a second potential connection is provided. The circuit arrangement may include an inductive element connected in series between the two potential connections and by elements of an action chain of such a nature that, under predefined conditions, a voltage drop across the inductive element effects the switching off of at least one of the semiconductor switches. | 11-17-2011 |
| 20120014025 | OVERCURRENT PROTECTION CIRCUIT AND SEMICONDUCTOR DEVICE - The present invention is directed to achieve longer life of a driving element for driving a load without maintaining a stop state of the driving element even in the case where overcurrent occurs in the driving element. An overcurrent protection circuit monitors current flowing in driving elements for driving a load and, in the case where it is detected that the current becomes a predetermined threshold or larger, performs a control for stopping driving of the load only for predetermined protection time in accordance with a detection result. The overcurrent protection circuit counts the number of detection times and changes the predetermined protection time in accordance with the number of detection times. | 01-19-2012 |
| 20120075761 | ELECTRONIC DEVICE - An electronic device that is capable of detecting an abnormal state such that a switching element is unable to be turned off in spite of a drive signal instructing turn-off of the switching element. The device includes a switching element that is driven by controlling a voltage on its control terminal, a drive circuit that controls the voltage on the control terminal of the switching element on the basis on an inputted drive signal to drive the switching element. In cases where there exists a current flowing through the switching element in spite of the drive signal instructing turn-off of the switching element, the drive circuit determines that the switching element is in an abnormal state, and cuts off supply of voltage from a drive power supply circuit to the control terminal of the switching element to thereby turn off the switching element. | 03-29-2012 |
| 20120127620 | SOFT MAGNETIC METAL STRIP FOR ELECTROMECHANICAL COMPONENTS - The invention relates to a soft-magnetic metal strip for electromechanical components, wherein the soft-magnetic metal strip has a nanocrystalline or amorphous structure. The metal strip has strip thickness to roughness ratios d/Ra of 5≦d/Ra≦25. | 05-24-2012 |
| 20120162843 | LINE CURRENT DIFFERENTIAL PROTECTION UPON LOSS OF AN EXTERNAL TIME REFERENCE - A line current differential protection system that uses an external time reference continues providing protection to a power apparatus upon the loss of the external time reference. An external time reference synchronization mode and a channel based synchronization mode may be selectively applied on a per channel basis such that only those channels in the system that are not guaranteed to stay symmetrical use external time reference synchronization. When the external time reference is lost, fallback strategies may be used such as disabling or de-sensitizing the line current differential protection function, switching from the external time reference synchronization mode to a channel based synchronization mode with appropriately selected protection settings, and/or marking the channel as unavailable to isolate the system from the consequences of synchronization errors over this channel and instead using a master-slave mode with other available channels to continue providing line protection with the current differential system. | 06-28-2012 |
| 20120188676 | METHOD FOR OPERATING AN ELECTRICAL POWER SUPPLY NETWORK - A method for operating an electrical power supply network is described. The power supply network has several levels of different voltages. The levels are interconnected by switches. A first switch is made so that the maximum interruptible short-circuit current of the first switch is smaller than the maximum flowing short-circuit current. In the event of failure, a test is made as to whether the short-circuit current presently flowing through the first switch is smaller than the maximum interruptible short-circuit current. The first switch will remain closed if this is not the case, and the first switch will be opened if this is the case. | 07-26-2012 |
| 20120218673 | MOISTURE DETECTION LABEL, MOISTURE DETECTION DEVICE, MOISTURE DETECTION METHOD, POWER SHUTOFF METHOD, AND ELECTRONICS DEVICE - Provided is a moisture detection device including: a moisture detection label that has at least a pair of detection terminals and a pattern, the detection terminals being provided on abase material with an insulated front surface, the pattern being provided on the surface of the base material and formed between the detection terminals with water-dispersible and conductive paint; and detection circuit which detects an electrical connection state between the detection terminals. | 08-30-2012 |
| 20120327546 | ELECTRONIC APPARATUS - According to one embodiment, an electronic apparatus includes a first terminal on a first board, a second terminal on a second board, a connection member configured to transmit signals between the first board and the second board, the connection member including a wire rod member including kinds of wire rods, a first connector capable of being connected to the first terminal and the second terminal, and a second connector capable of being connected to the first terminal and the second terminal, wherein at least one of the signals is not transmitted when the first connector is connected to the second terminal and the second connector is connected to the first terminal. | 12-27-2012 |
| 20130057996 | CURRENT GENERATING DEVICE - Even when a large-current, high-voltage load is applied, damage is prevented. A current generating device ( | 03-07-2013 |
| 20130100567 | POWER DISTRIBUTION APPARATUS FOR SEPARATE ELECTRICAL OVER CURRENT AND SHORT CIRCUIT PROTECTION - A system for protecting electrical power distribution circuits and loads electrically connected thereto comprises a circuit breaker or fuse in series with an over current protection device, for example a virtual circuit breaker. The circuit breaker or fuse provides protection against a short circuit condition, and the virtual circuit breaker provides against excess current. Separating the two protection means enables providing a higher current allowance for loads connected to outlets on a branch circuit. | 04-25-2013 |
| 20130155563 | CURRENT LEAKAGE PROTECTION CIRCUIT, POWER SOCKET AND ELECTRONIC DEVICE USING SAME - A current leakage protection circuit includes a first input terminal, a second input terminal for receiving a power voltage and a current leakage detection terminal configured for detecting a current leakage from an electronic device. A control circuit of the current leakage protection circuit is configured for providing a control signal to control a first switch circuit to switch off a first connection between the first input terminal and a first output terminal and to control a second switch circuit to switch off a second connection between the second input terminal and a second output terminal when the current leakage detection terminal detects current leakage of the electronic device. | 06-20-2013 |
| 20130163138 | WIRE PROTECTION METHOD AND WIRE PROTECTION DEVICE - With a wire protection method in accordance with the present invention, the method being used for supplying electric power from a power source to a load, an applied-current to the load is detected every predetermined time, A wire rise temperature is calculated using the detected applied-current I(n) and by a relational expression concerning heat radiation and heat generation of the wire. The calculated rise in temperature is added to a reference temperature so that a wire temperature is estimated. When the estimated wire temperature is lower than a predetermined upper limit temperature, the calculation of the rise in temperature is repeated. When the estimated wire temperature has become equal to or higher than the predetermined upper limit temperature, the electric power supply from the power source to the load is stopped so that the wire is protected. | 06-27-2013 |
| 20130271888 | Photovoltaic System and Apparatus for Operating a Photovoltaic System - The disclosure relates to a PV system including at least one inverter coupled to a grid via an AC disconnecting element and at least one transformer. The PV system includes at least one PV sub-generator having at least one PV string connected to a DC connection region of the inverter via DC lines. The PV system includes protection devices including a DC short-circuiting switch for short-circuiting the at least one PV string and a reverse-current protection element connected downstream thereof. The protection device includes an AC short-circuiting switch arranged upstream of the AC disconnecting element. | 10-17-2013 |
| 20130293995 | NON-SEQUENTIAL MONITORING OF BATTERY CELLS IN BATTERY MONITORING SYSTEMS, AND RELATED COMPONENTS, SYSTEMS, AND METHODS - Non-sequential monitoring of battery cells in battery monitoring systems, and related components, systems, and methods are disclosed. In one embodiment, a battery monitoring system control unit is provided. The battery monitoring system control unit is configured to control battery monitoring devices. Each battery monitoring device is configured to be coupled to a subset of battery cells electrically connected in series in a sequential order to form a battery. The battery monitoring system control unit is further configured to instruct the battery monitoring devices to test an ohmic value of each battery cell of the battery cells of the battery in a non-sequential order. In this manner, heat generated in the battery monitoring devices from the testing may be more effectively dissipated, which can also allow for the battery monitoring devices to be employed in higher operating temperature environments. | 11-07-2013 |
| 20130308239 | SWITCHING DEVICE AND BREAKER CONTROL METHOD - A switching circuit ( | 11-21-2013 |
| 20130314834 | SEMICONDUCTOR DRIVING CIRCUIT AND SEMICONDUCTOR DEVICE - A low power consumption semiconductor driving circuit is provided which applies positive and negative bias signals to a semiconductor switching element by using a single power source to perform the switching of the semiconductor switching element. The semiconductor driving circuit is a semiconductor driving circuit for driving the semiconductor switching element. The semiconductor driving circuit includes an internal power source circuit for generating a second voltage from a first voltage supplied from an external power source, and a driver for applying the first voltage or the second voltage between the gate and emitter of the semiconductor switching element in accordance with an input signal inputted from outside to switch on and off the semiconductor switching element. The internal power source circuit is configured to operate in accordance with the input signal. | 11-28-2013 |
| 20130329329 | SOLID STATE POWER CONTROL SYSTEM FOR AIRCRAFT HIGH VOLTAGE DC POWER DISTRIBUTION - An electrical power distribution system (EPDS) for an aircraft, the EPDS may include a DC bus, a power source port, a solid state power controller (SSPC) of a first type interposed between the power source port and the DC bus, at least one load port and an SSPC of a second type interposed between the load port and the DC bus. Power input to the SSPC of the first type may be connected to a unidirectional solid state switching device (SSSD) of the SSPC of the first type. The SSPC of the first type may have forward and reverse current conducting capability and forward and reverse current blocking capability. Power input to the SSPC of the second type may be connected to a unidirectional SSSD of the SSPC of the second type. The SSPC of the second type may have forward and reverse current conducting capability and capability of blocking current from only one direction. | 12-12-2013 |
| 20140002942 | Secondary Lithium Ion Battery With Mixed Nickelate Cathodes | 01-02-2014 |
| 20140022684 | MULTI-PHASE SWITCHING CONVERTER WITH OVER CURRENT PROTECTION AND CONTROL METHOD THEREOF - A multi-phase switching converter includes a plurality of switching circuits and a controller. The output terminals of the plurality of switching circuits are coupled together to provide an output voltage to a load. The controller is configured to generate a plurality of control signals to control the plurality of switching circuits. When an over current condition of a current switching circuit of the plurality of switching circuits is detected, the controller skips the current switching circuit and successively turns on the remaining plurality of switching circuits that have not yet been turned on and where an over current condition has not been detected. | 01-23-2014 |
| 20140029148 | INTEGRATED MECHANISM FOR AN ELECTRONIC DEVICE AND AN ADAPTOR - An integrated mechanism is disclosed. An electronic device includes a slot, an engaging groove, and a power input portion. The engaging groove communicates with the slot and the power input portion is disposed in the slot. An adaptor is detachably connected to the electronic device and includes a grip, a power line, an extended connection bar, a tenon, and a power output portion. The power line is connected to the grip. The extended connection bar is connected to the grip. The tenon is formed on the extended connection bar. The power output portion is formed on the extended connection bar and is electrically connected to the grip and power line. When the adaptor connects to the electronic device, the extended connection bar is inserted into the slot, the tenon is selectively engaged or rotated in the engaging groove, and the power output portion connects to the power input portion. | 01-30-2014 |
| 20140055900 | METHOD AND APPARATUS FOR ENHANCING ARC FAULT SIGNAL FOR DETECTION IN PHOTOVOLTAIC SYSTEM - A photovoltaic (PV) system includes a string of at least one PV module, and an arc fault detector (AFD) electrically coupled to the string. The AFD is configured to detect a non-DC electrical current that occurs within the string, and cause electrical contacts within the PV system to open as a result of the detected non-DC electrical current. The system includes a capacitor electrically coupled to the string and to the AFD such that the non-DC electrical current passes through the AFD and the capacitor. | 02-27-2014 |
| 20140085763 | FAULT DETECTION AND SHORT CIRCUIT CURRENT MANAGEMENT TECHNIQUE FOR INVERTER BASED DISTRIBUTED GENERATORS (DG) - Systems, methods, and devices relating to fault detection and short circuit current management support in power transmission and distribution networks using multiple inverter based power generation facilities. A fault detection process uses the waveshape (or the rate of change of the current) of the distributed generator output short circuit current to determine if a trip signal is required to disconnect the inverter based power generation facility from the transmission and distribution network. The process operates on DGs such as photovoltaic (PV) based solar farm. The present invention applies to the entire 24-hour period operation of inverter based DGs (e.g., solar farms, wind farms, fuel cell based DGs, etc.). | 03-27-2014 |
| 20140118874 | GATE DRIVER WITH DESATURATION DETECTION AND ACTIVE CLAMPING - Apparatus, systems, and methods are provided for protecting a switching device using a gate driver device. An exemplary gate driver system includes an interface for coupling to a switching device, a desaturation detection arrangement coupled to the interface to detect a desaturation condition based on an electrical characteristic at the interface, and a deactivation arrangement coupled to the interface to deactivate the switching device in a manner that is influenced by the electrical characteristic at the interface. In one embodiment, the switching device is deactivated by providing a deactivation current to a control terminal of the switching device and adjusting the deactivation current based on an electrical characteristic at the interface. | 05-01-2014 |
| 20140133057 | SURGE PROTECTION DEVICE - There is provided a surge protection device that includes (a) an input and an output, (b) a short-circuit-proof primary current path and a secondary current path between the input and the output, and (c) a fuse in a short-circuit-proof fuse box. The short-circuit-proof fuse box is arranged in the secondary current path, and (i) on one side of the secondary current path is contacted with the primary current path in a short-circuit-proof manner based on the primary current path, and (ii) on the other side of the secondary current path is contacted in a substantially short-circuit-proof manner based on the fuse. A help system for signalling and/or supply of devices for improving ignition behaviour is arranged in the secondary current path, and the short-circuit-proof fuse box is also contacted to a short-circuit-proof discharge path so that a current can be guided by the help system current path. | 05-15-2014 |
| 20140168843 | ARC FAULT DETECTION EQUIPMENT AND METHOD USING LOW FREQUENCY HARMONIC CURRENT ANALYSIS - An arc fault detection circuit includes a current sensing circuit coupled to a line conductor carrying a current. The current sensing circuit operates to sense current and output data indicative of the sensed current. A processing circuit implements a frequency transform algorithm to transform the output data to frequency data in a low frequency range and with a high spectral resolution where a minimum short time observation window is concerned. The processing circuit identifies an arc fault condition on the line conductor by identifying differences in said frequency data between at least two subsequent observation windows and identifying characteristics which exceed thresholds. | 06-19-2014 |
| 20140177117 | GROUND MONITOR CURRENT SENSING - A ground monitor apparatus for monitoring ground current includes a DC detection module, a DC threshold module, and a trip module. The current monitor module monitors current in a pilot conductor or a ground return. The pilot conductor injects current in a grounding conductor of a power cable assembly connecting a power source to a load. A voltage source is connected to the pilot conductor and the ground return. The DC detection module determines a direct current (“DC”) current present in the current monitored by the current monitor module and the DC threshold module determines if the DC current is above a DC current threshold. The trip module opens a contact in response to the DC threshold module determining that the DC current is above the DC current threshold. The contact disconnects the power source from the power cable assembly. | 06-26-2014 |
| 20140192449 | SHORT-CIRCUIT PROTECTION CIRCUIT - Provided is a short-circuit protection circuit having a mask circuit which can reduce a turn-on loss of a voltage-driven type semiconductor device during turn-on operation of the voltage-driven type semiconductor device. A mask circuit ( | 07-10-2014 |
| 20140218833 | SHORT CIRCUIT PROTECTION CIRCUIT AND METHOD FOR INSULATED GATE BIPOLAR TRANSISTOR - An assembly includes an insulated gate bipolar transistor (IGBT), a gate driver and a short-circuit protection circuit. The gate driver is adapted to supply voltage to a gate terminal of the IGBT. The short-circuit protection circuit includes an IGBT short-circuit detector for determining whether the IGBT is short-circuited, and a supply voltage regulator for regulating the supply voltage in response to the IGBT short-circuit detector determining that the IGBT is short-circuited. | 08-07-2014 |
| 20140240884 | OVER CURRENT PROTECTION CIRCUIT - The over current protection circuit is coupled to a current path between an output end of a switch and a load. The over current protection circuit includes a first over current detection unit, a second over current detection unit and a control unit. The first over current detection unit is disposed between the current path and a first voltage, and generates a first control signal according to a current in the current path. The second over current detection unit is disposed between the current path and a second voltage, and generates a second control signal according to a current in the current path. The control unit is coupled with the first over current detection unit and the second over current detection unit, and controls the switch according to the first control signal or the second control signal to reduce the current in the current path. | 08-28-2014 |
| 20140247530 | TESTING APPARATUS WITH BACKDRIVING PROTECTION FUNCTION - A testing apparatus with a back-drive protection function is disclosed, where the testing apparatus includes a driver and a field programmable gate array (FPGA), where the driver is electrically connected to the FPGA. The FPGA can monitor output current from the driver and perform the back-drive protection function on the driver to protect device-under-test (DUT). | 09-04-2014 |
| 20140247531 | ELEVATOR PROTECTION AGAINST SHORT CIRCUIT OF SAFETY DEVICES - An electrical safety circuit powered by an electrical power supply at point A terminal, the safety circuit includes a plurality of switches serially connected to one another, the serially connected switches have a first and second ends, the first end is connected serially to the power supply and the second end is serially connected to a safety circuit bypass detector having two ends, one end of the safety circuit bypass detector is connected serially to the second end of the serially connected switches and the second end of the safety circuit bypass detector is connected to a point B terminal, the point B terminal is connected to an electrical load. The safety circuit bypass detector have a switching device RX with a normally open contact RX | 09-04-2014 |
| 20140293494 | Adaptive Topology Assisted Protection and Control of Electric Power Delivery Systems - Disclosed are adaptive communication assisted protection and control. Local intelligent electronic devices (IEDs) associated with local switching devices and having unique IDs may transmit switch status and unique IDs to an area IED. The area IED may calculate topology using switch status, and provide control information to local IEDs using the topology. The area IED may communicate the unique ID of the local IED calculated to be immediately upstream of each local IED and, upon detection of a fault, the local IEDs may send blocking signals that include the received unique ID of the IED immediately upstream therefrom. The area IED may communicate control commands that include the unique IDs and control commands for the local IEDs to take the control action. Upon matching of the unique ID in the control command with its own unique ID, the local IEDs may take the control action and transmit remaining actions. | 10-02-2014 |
| 20140301006 | INTELLIGENT MAGNETIC LATCHING MINIATURE CIRCUIT BREAKER - This invention discloses a type of intelligent magnetic-hold miniature circuit breaker, comprising a casing, a magnetic-hold relay, and a drive circuit, wherein said drive circuit receives control signal and then drives operation of said magnetic-hold relay; said magnetic-hold relay comprises a dynamic spring assembly, a static spring assembly, a deflector rod, a pushing piece, and a magnetic steel assembly; rotation of said magnetic steel assembly drives said deflector rod and then closing or opening of contacts of said dynamic spring assembly and said static spring assembly via said pushing piece; said miniature circuit breaker also includes a central processor, a communication chip, a mutual inductance module, and a current conditioning circuit. Said mutual inductance module is installed on the extension wire of the dynamic spring assembly. Said current conditioning circuit is connected to said central processor and said mutual inductance module respectively. Said central processor drives the magnetic-hold relay via said drive circuit according to current state signal from said current conditioning circuit, to realize overload protection. | 10-09-2014 |
| 20140301007 | FAULT CURRENT LIMITER - Described herein are fault current limiters including an input terminal for electrically connecting to a power source that provides a load current, and an output terminal for electrically connecting with a load circuit that draws the load current. The fault current limiters include a magnetically saturable core including at least one coil receiving limb disposed intermediate at least two return limbs, wherein the limbs longitudinally extend between at least two yokes, and wherein the at least two yokes and the at least two return limbs define at least a portion of one or more magnetic flux return paths for the at least one coil receiving limb. The fault current limiters further includes at least one AC coil disposed about the at least one coil receiving limb for carrying the load current between the input terminal and the output terminal. The fault current limiters also includes a magnetic biasing system for magnetically biasing the core such that, in response to one or more characteristics of the load current, the at least one AC coil moves from a low impedance state to a high impedance state. | 10-09-2014 |
| 20140307358 | Battery Circuit Fault Protection in Uninterruptable Power Sources - A power system which includes a battery (or string of batteries) as well as a preemptive fuse driver, PFD, system. The PFD protection system reliably protects circuits that could be damaged by long term fault currents. More specifically, the PFD protection system includes a sensor and a controller as well as a controlled switch. The controller includes a PFD control module which allows protection to be tuned specifically to the source and load characteristics. | 10-16-2014 |
| 20140327994 | PTC Device - The present invention provides a PTC device having the larger rated current and/or the larger rated voltage. | 11-06-2014 |
| 20140327995 | SYSTEM FOR DISCONNECTING ELECTRICAL POWER UPON REGULATION FAILURE | 11-06-2014 |
| 20140334051 | CURRENT DETECTION CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE - In a current detection circuit, a first circuit is connected between a first terminal and a second terminal, and a second circuit is connected between a third terminal and a fourth terminal. The second terminal and the fourth terminal are commonly connected. When a first current flows between the first and second terminals, voltage drop occurs in the first circuit. A current control circuit controls the first current to make an application voltage between the first and second terminals substantially same as an application voltage between the third and fourth terminals. When the first circuit has voltage drop same as the second circuit, the first current has the amount proportional to the second current. A detection circuit detects a current flowing between the first terminal and the third terminal by detecting the first current controlled by the current control circuit or the second current. | 11-13-2014 |
| 20150016004 | OVER-CURRENT PROTECTION CIRCUIT - A circuit protecting the components of a power circuit against passing an over-current is connected to an enable terminal of a pulse width modulation (PWM) controller of a power supply circuit on a motherboard, protecting the field effect transistors (FETs) of a first power circuit of the power supply circuit. The protecting circuit includes a first protection circuit. When a current of the first power circuit is increased, the temperatures of the FETs of the first power circuit also increase. The first protection circuit then outputs a low-level signal to the enable terminal of the PWM controller and the PWM controller stops operation thereby protecting the FETs of the first power circuit. | 01-15-2015 |
| 20150036254 | MODULAR POWER SKID THAT CAN MEET TWO OR MORE DIFFERENT DATACENTER TIER RATINGS - A method, apparatus, and system in which one or more instances of a same modular power skid are assembled with main and backup uninterruptible power supplies and multiple power distribution cabinets arranged in different electrical configurations and control sequences to meet two or more different datacenter tier ratings with a built-in fault tolerance via a programmable logic controller housed in one of the cabinets on the skid as well as built-in autonomous responses to equipment failures programmed into the programmable logic controller. | 02-05-2015 |
| 20150062769 | COMBINED CIRCUIT BREAKER AND DC POWER SUPPLY APPARATUS, SYSTEMS, AND METHODS - A circuit breaker is configured to provide both AC and DC protected power. The circuit breaker is packaged in a housing that includes a tripping module, a DC power supply, an AC load terminal, and a DC load terminal. The tripping module senses and responds to electrical faults by interrupting power, and the DC power supply converts received AC power to DC power. In some embodiments, the circuit breaker may be configured as a main breaker of a circuit breaker panel, while in other embodiments the circuit breaker may be configured as a branch circuit breaker that occupies a single branch circuit breaker mounting location in a circuit breaker panel. Methods of assembling a circuit breaker are also provided, as are other aspects. | 03-05-2015 |
| 20150085414 | Output Stage with Short-Circuit Protection - An output stage with short-circuit protection includes a power transistor, a detecting module, a disable module, and a driving module. The power transistor is electrically connected between a voltage source and an output node. A gate end of the power transistor is configured to receive a driving signal. The detecting module is configured to detect an output voltage on the output node to determine whether a short-circuit condition occurs, and to provide a detecting signal according to the output voltage on the output node in the short-circuit condition. The disable module is configured to provide a disable signal according to the detecting signal in the short-circuit condition, and operatively stop the disable signal in each cycle period of a clock signal. The driving module is configured to determine whether to generate the driving signal according to the disable signal and the clock signal. | 03-26-2015 |
| 20150085415 | PASSIVE CIRCUIT FOR IMPROVED FAILURE MODE HANDLING IN POWER ELECTRONICS MODULES - A power electronics module for enhancing short circuit failure mode (SCFM) transitions. The module is adapted to disconnect a gate unit from the module using a first switch, upon a failure of at least one of a plurality of semiconductor chips during which the failed chip enters an SCFM, and connect a passive circuit arrangement, including at least one capacitor and at least one resistor, to the module using a second switch. The passive circuit arrangement is adapted to switch on at least one of the remaining non-failed semiconductor chips. | 03-26-2015 |
| 20150103458 | Modular Equipment Center Integrated Truss Sensors - A modular truss assembly for mechanically and electrically mounting system components of a modular equipment center (MEC). A plurality of MECs is spatially distributed throughout the vehicle to service equipment loads. The modular truss assembly provides different voltage levels for powering the system components of the MEC and for powering the equipment loads. In one or more configurations, a MEC incorporate inductive power coupling for powering a line replaceable unit (LRU) in proximity to the modular truss assembly without exposed electrical connections and such that the MEC may forgo power conversion equipment. In one or more configurations, a sensor is embedded in one or more transfer layers of the truss for measuring a power trace embedded in the modular truss assembly. | 04-16-2015 |
| 20150116881 | HIGH VOLTAGE DC CIRCUIT BREAKER APPARATUS - A circuit breaker apparatus for use in high voltage direct current (HVDC) power transmission is provided. The circuit breaker apparatus has one module or a plurality of series-connected modules, the or each module including: first, second, third and fourth conduction paths and first and second terminals for connection to an electrical network, each conduction path extending between the first and second terminals, the first conduction path including a mechanical switching element, the second conduction path including at least one semiconductor switching element, the third conduction path including a snubber circuit having an energy storage device and the fourth conduction path including a resistive element. | 04-30-2015 |
| 20150146333 | RELAY WELDING DETECTOR, RELAY EQUIPMENT INCORPORATING THE SAME, AND RELAY WELDING DETECTING METHOD - A relay welding detector is adapted for detecting welding fault of a relay. The relay has a first electrical contact coupled to a neutral terminal of an alternating current (AC) power source through a first power line, and a second electrical contact coupled to a load through a second power line. The relay welding detector includes a signal generator generating a test signal, a current transformer wound with a portion of one of the power lines and generating an induced signal based on the test signal, and a determining unit determining, based on the induced signal, whether the electrical contacts of the relay are welded to each other. | 05-28-2015 |
| 20150146334 | OVER-CURRENT PROTECTION DEVICE AND PROTECTIVE CIRCUIT BOARD CONTAINING THE SAME - An over-current protection device adapted to be soldered onto a circuit board comprises a PTC material layer, a first electrode foil, a second electrode foil, a bonding section and a metal connecting member. The PTC material layer has opposite first and second surfaces. The first electrode foil is in physical contact with the first surface, and the second electrode foil electrically connects to the second surface. Both the second electrode foil and the bonding section are disposed on bottom of the device, and the bonding section is separated from the second electrode foil. The metal connecting member is disposed on the lateral surface of the device. The second electrode foil is adapted to be soldered onto an electrode section of the circuit board. The bonding section and the metal connecting member connect to corresponding joint section of the circuit board. | 05-28-2015 |
| 20150295396 | EXPLOSION-PROOF AND SURFACE MOUNTED CIRCUIT PROTECTION UNIT - An explosion-proof and surface mounted circuit protection unit has a base module, a fuse, and a base cover. The base module has a base body and two conductive units. The base body has multiple first combination parts. The conductive units are respectively mounted on the base body at an interval. The fuse is mounted on the base module and electrically connected with the conductive units. The base cover is mounted on the base module and has a cover body, multiple second combination parts, and an interval between the cover body and the base body. The second combination parts protrude on the cover body and are respectively combined with the first combination parts tightly. The explosion-proof and surface mounted circuit protection unit can provide an explosion-proof effect. | 10-15-2015 |
| 20150318687 | SURGE PROTECTION ASSEMBLY AND METHOD FOR ELECTRICAL SWITCHNG APPARATUS - An electrical switching apparatus includes a plurality of poles each comprising separable contacts, an operating mechanism structured to open and close the separable contacts and to trip open the separable contacts in response to a fault condition, and a housing enclosing the separable contacts. The housing includes an interior, an exterior, and a plurality of receptacles extending from the exterior toward the interior. A surge protection assembly includes a plurality of modules, wherein each of the modules is removably disposed in a corresponding one of the receptacles of the housing. Each of the modules provides independent surge protection for a corresponding one of the poles of the electrical switching apparatus. | 11-05-2015 |
| 20150318689 | SYSTEMS AND METHODS FOR SUPPRESSING RUSH CURRENT NOISE IN A POWER SWITCH CELL - A System and a method are disclosed for suppressing rush current noise in a power switch cell. The system comprises: a power switch ( | 11-05-2015 |
| 20150333417 | CIRCUIT PROTECTION SYSTEM, AND WIRETAP CONNECTION ASSEMBLY AND METHOD THEREFOR - A wiretap connection assembly is for a circuit protection system. The circuit protection system includes at least one wire conductor and at least one circuit interrupter. The circuit interrupter includes a line conductor and a load conductor. The wire conductor has an electrically conductive inner core and an electrically insulating outer covering. The wiretap connection assembly includes a wire severing assembly structured to sever the wire conductor, and a number of wiretap assemblies. Each wiretap assembly includes a tapping portion and a connecting portion. The tapping portion is structured to pierce through the electrically insulating outer covering of a corresponding portion of the wire conductor and into the electrically conductive inner core. The connecting portion is structured to electrically connect the electrically conductive inner core of the corresponding portion of the wire conductor to a corresponding one of the line conductor and the load conductor. | 11-19-2015 |
| 20150333547 | BATTERY PROTECTION CIRCUIT PACKAGE - A battery protection circuit package is provided which is advantageous for integration and miniaturization. The battery protection circuit package includes: a substrate on which a conductive line pattern is disposed; a battery protection circuit element that is mounted on the substrate and includes a protection IC, a field effect transistor (FET), and at least one passive element; and an NFC antenna structure that is mounted on the substrate, and the conductive line pattern constitutes at least a part of an extension antenna that is connected to the NFC antenna structure to form a loop. | 11-19-2015 |
| 20150349513 | CIRCUIT BREAKER - A circuit breaker according to the present invention includes a terminal switching unit mounted in an enclosure thereof, and the terminal switching unit accommodates, in a base as an outer casing thereof, a fixed contactor and a movable contactor contactable with and separated from each other, a sliding unit rotatably supporting the movable contactor, and a detection mechanism to detect a fault current. Radiators are provided at side portions of at least one of a contact portion where the movable contactor comes in contact with the fixed contactor, the sliding unit and the detection mechanism, each radiator radiating heat to the outside of the base. This may prevent an increase in temperature of the circuit breaker within a limited space without an increase in costs. | 12-03-2015 |
| 20150349521 | SHORT- CIRCUIT DETECTION DEVICE AND METHOD USED IN INVERTER CIRCUIT - A method for detecting a short circuit fault in a multi-level inverter circuit is provided. The multi-level inverter circuit includes a plurality of single phase branches each including of switches. The method includes steps outlined below. At least one detecting pulse sequence is transmitted to the switches of each of the single phase branches. Whether a conducting path is formed in any of the single phase branches is determined according to the detecting pulse sequence. When the conducting loop is formed, respective position of one or more malfunctioned switch in the single phase branches is located according to a path of the conducting loop. A short-circuit detection device and a three-phase three-level inverter circuit are also disclosed herein. | 12-03-2015 |
| 20150357813 | SHORT CIRCUIT DETECTION CIRCUIT AND SHORT CIRCUIT DETECTION METHOD FOR MULTI-PHASE RECTIFIER AT FREQUENCY DOMAIN - A short circuit detection circuit and a short circuit detection method for a multi-phase rectifier are provided, which are used for detecting conditions of a spectrum of a FWR signal outputted from the multi-phase rectifier in the frequency domain. Next, determining whether the detected signal indicating the amplitude of the frequency of the AC signal is greater than or equal to the reference signal, so as to determine whether the multi-phase rectifier has a short circuit condition. Therefore, the short circuit detection circuit and the short circuit detection method do not have any requirements for configuring a short circuit detection element on each current path of the multi-phase rectifier, so that the power loss and the cost can be reduced effectively. | 12-10-2015 |
| 20150380923 | Overcurrent Protection Device And Method - A power line protection system and method are described with a current meter for monitoring the current in the protected power line and a circuit breaker, with the current meter including a sensor, particularly a fiber optic current sensor, for monitoring a direct current component in the current transmitted and an analyser for testing the direct current component and for generating a fault signal for the circuit breaker. | 12-31-2015 |
| 20160006239 | INTERFACE HAVING EARTH FAULT CURRENT - An interface for cutting off the power supply for any fault current Id≦300 milliamperes such that: Id≧IPE+k·Ih where IPE represents the current returning to the power source via the protective conductor connecting the exposed conductive parts to earth and Ih (≦10 or 30 milliamperes) represents the current returning to the power source by ways other than via the protective conductor or via an active conductor. Current Ih is therefore likely to travel through a person. In this way, the interface protects people and property against ground insulation faults and against certain direct contacts independently of the earth of the exposed conductive parts and of external conditions. It also protects people in the event of a failure in the protection of an area using the same earth in case of a fault. | 01-07-2016 |
| 20160006240 | A METHOD FOR DETECTING FAULT AND CURRENT DIFFERENTIAL PROTECTION SYSTEM THEREOF - The present invention discloses a method for detecting a fault and a current differential protection system thereof. The method for detecting fault includes calculating fault component currents, calculating an operate current and a restraint current of all terminals, and adjusting an operate level by adapting an operate-restraint characteristic according to a fault component. The method has very small operating area for external faults, which makes the method very reliable even for the case with serious CT saturation. A very big operating area for internal faults makes the method very sensitive for internal faults even for a heavy load and high resistance fault. | 01-07-2016 |
| 20160020596 | SMART OUTPUT PROTECTOR - A smart output protector device includes a data positive input, a data positive output, a data negative input, a data negative output, a first resistor, and a first normally closed relay. The first resister blocks direct short circuits. The first normally closed relay separates the smart output protector device when opened. | 01-21-2016 |
| 20160094023 | ELECTRONIC APPARATUS, POWER SUPPLY DEVICE, AND POWER SUPPLY MONITORING METHOD - An electronic apparatus includes: a power supply circuit that supplies power supply voltage to a load; an overcurrent detection circuit that performs output of detection information indicating the direction of current at a power supply path for the load in the power supply circuit when overcurrent occurs in the power supply path; and a determination circuit that performs output of notification information indicating whether or not a location at which a failure occurs exists within the power supply circuit or outside the power supply circuit, based on the detection information. | 03-31-2016 |
| 20160105014 | DIRECT CURRENT CIRCUIT BREAKER AND METHOD USING THE SAME - Disclosed is a direct current (DC) circuit breaker including a first line in which a first high-speed switch and a power semiconductor switch are connected in series; a second line in which a plurality of second high-speed switches, a plurality of pairs of a first non-linear resistor and a power fuse connected in parallel, and a resistor are connected in series; and a third line including a second non-linear resistor. The first line, the second line, and the third line are connected in parallel. | 04-14-2016 |
| 20160118785 | ELECTRICAL SAFETY DEVICE MISWIRE DETECTION - Aspects of an electrical safety device that provides detection of miswiring of line and load connection pairs are presented. In an example, the device includes a differential current detector through which are routed a live current path and a neutral current path coupling the line and load connection pairs. The device also includes a selectable conducting path that, when selected, circumvents the differential current detector while coupling one of a line live connection to a load live connection or a line neutral connection to a load neutral connection of the connection pairs. The device further includes a control circuit that determines, via the differential current detector, while the conducting path is selected, a differential current defined by a difference in currents on the live and neutral current paths, and interrupts at least one of the live and neutral current paths in response to the differential current not exceeding a threshold value. | 04-28-2016 |
| 20160126717 | CIRCUIT PROTECTION DEVICES AND METHODS OF MONITORING PROTECTION DEVICES IN A POWER DISTRIBUTION SYSTEM - Circuit protection devices, power distribution systems, and methods of monitoring circuit protection devices are described. In one example, a method of monitoring a circuit protection device in a zone selective interlocking (ZSI) system includes monitoring a variable associated with operation of the circuit protection device, determining, based at least in part on the monitored variable, when a likelihood of a malfunction of the circuit protection device exceeds a predetermined threshold, and preventing the circuit protection device from outputting a ZSI blocking signal when the likelihood of the malfunction of the circuit protection device exceeds the threshold. | 05-05-2016 |
| 20160126722 | Protection apparatus and method of terminal - A protection apparatus of a terminal is described in an embodiment of the disclosure, which includes that: a detection module, a driving module and a plugboard, wherein the plugboard is disposed between a mainboard side power supply contact and a battery side power supply contact of the terminal; the mainboard side power supply contact and the battery side power supply contact are connected via the plugboard; the detection module is configured to send a driving instruction to the driving module when detecting that a working parameter of the terminal exceeds a preset threshold; the driving module is configured to push the plugboard so as to break a connection between the mainboard side power supply contact and the battery side power supply contact when receiving the driving instruction sent from the detection module. A protection method of a terminal is also described in an embodiment of the disclosure. With the technical solution in the embodiment of the disclosure, it is able to realize a fast power interruption on a mobile terminal, effectively reduce the damage to the mobile terminal in an emergency and reduce the loss of a user. | 05-05-2016 |
| 20160133911 | METHOD FOR MANUFACTURING BATTERY PROTECTION DEVICE AND BATTERY PROTECTION DEVICE - The present invention relates to a method for manufacturing a battery protection apparatus capable of reducing a defect rate and improving productivity by reducing work time and a battery protection apparatus. The method for manufacturing the battery protection apparatus, according to one aspect of the present invention, comprises the steps of: (a) preparing an upper PCB plate having a metallic thin film formed on an upper surface thereof, a lower PCB plate having a metallic thin film formed on a lower surface thereof, and a metal plate for a spacer having at least one side which protrudes toward lateral surfaces of the upper PCB plate and the lower PCB plate and has at least one insulation hole; (b) attaching the upper PCB plate and the lower PCB plate to each other in a state where the metal plate for the spacer is inserted; (c) forming circuit patterns on the upper PCB plate and the lower PCB plate; (d) forming a through-hole which is smaller than the insulation hole and penetrates the upper PCB plate and the lower PCB plate, and electrically connecting the upper PCB plate with the lower PCB plate through the through-hole; (e) forming an exposure hole at the upper PCB plate so as to expose the metal plate for the spacer, and electrically connecting the metal plate for the spacer with the upper PCB plate through the exposure hole; and (f) forming a vertical extension part and a horizontal extension part by bending a protrusion part of the metal plate for the spacer in two stages. | 05-12-2016 |
| 20160141859 | CAPACITVIVE LOAD OVERCURRENT DETECTION SYSTEM AND METHOD - An overcurrent detection circuit and method for one or more capacitive loads includes sensing current being supplied to the one or more capacitive loads to thereby generate a sensed current, and sensing a voltage rate of change across the one or more capacitive loads to thereby generate a differentiator output. The differentiator output is added to a fixed reference setpoint to thereby generate an overcurrent setpoint. The sensed current is compared to the overcurrent setpoint, and an overcurrent trip signal is supplied when the sensed current is greater than or equal to the overcurrent setpoint. | 05-19-2016 |
| 20160141860 | ELECTRICAL PROTECTIVE DEVICE AND METHOD FOR SELECTIVE DISCONNECTION OF A SUBSYSTEM IN CASE OF A SECOND FAULT IN AN IT POWER SUPPLY SYSTEM - An electrical protective device ( | 05-19-2016 |
| 20160141861 | ZONE SELECTIVE INTERLOCKING AND CIRCUIT PROTECTION DEVICE MONITORING IN A POWER DISTRIBUTION SYSTEM - Circuit protection devices, power distribution systems, and circuit protection device monitoring in a zone selective interlocking (ZSI) system are described. In one example, a circuit protection device for use in a ZSI power distribution system includes a trip mechanism configured to interrupt current flowing through the circuit protection device, and a trip unit operatively coupled to the trip mechanism. The trip unit is configured to monitor current flowing through the circuit protection device, output a first signal when the monitored current is less than a threshold value, and output a second signal when the monitored current is greater than or equal to the threshold value. The first and second signals are different from each other and different than an absence of a signal. | 05-19-2016 |
| 20160149393 | POWER DISTRIBUTION SYSTEMS AND METHODS OF OPERATING POWER DISTRIBUTION SYSTEMS WITH PARTIAL DIFFERENTIAL PROTECTION - An example method of operating a power distribution system including a plurality of source and tie circuit protection devices coupled between at least one source and a protection zone is disclosed. The protection zone includes a distribution bus and a plurality of feeder circuit protection devices coupled between the distribution bus and a plurality of loads. The method includes determining an electric current flowing through each source and tie circuit protection device, determining whether any of the feeder circuit protection devices is outputting a ZSI blocking signal, and controlling operation of the plurality of source and tie circuit protection devices according to an enhanced partial differential protection scheme based on a combination of the determined currents through the source and tie circuit protection devices and the determination of whether any of the feeder circuit protection devices is outputting a ZSI blocking signal. | 05-26-2016 |
| 20160149400 | BALANCING PARALLEL SOLID-STATE POWER CONTROLLER CHANNEL CURRENTS SYSTEMS AND METHODS - According to various embodiments, a solid-state power controller system is provided with channel protection features. The solid-state power controller system is configured to provide the ability to have sharing control over an individual SSPC channel that is operating in parallel with other SSPC channels. This can assist with the operation of secondary protection, protect the channel from exceeding its own trip curve, as well as assisting with thermal balance between the power dissipation of the channels in the group. | 05-26-2016 |
| 20160156181 | ELECTRONIC DEVICE AND MOTHERBOARD AND PROTECTING CIRCUIT OF ELECTRONIC DEVICE | 06-02-2016 |
| 20160161559 | MV SWITCHING DEVICE OF THE ELECTROMAGNETIC TYPE HAVING AN IMPROVED POWER DRIVE CIRCUIT - A MV switching device ( | 06-09-2016 |
| 20160172838 | MICROGRID DISTRIBUTION MANAGER WITH DYNAMICALLY ADJUSTABLE TRIP CURVES FOR MULTI-SOURCE MICROGRIDS | 06-16-2016 |
| 20160197466 | OFFSET RESIDUAL CURRENT PROTECTIVE DEVICE | 07-07-2016 |
| 20160197467 | POWER CONTROL UNIT WITH REMOTE SENSOR | 07-07-2016 |
| 20160204594 | ELECTRONIC DEVICE WITH CIRCUIT PROTECTION AND ASSEMBLING METHOD THEREOF | 07-14-2016 |
| 20160254662 | Limiting Amplitude Of Electricity Delivered To An Electrical Load | 09-01-2016 |
| 20160380422 | ELECTRICAL SWITCHING APPARATUS INCLUDING ALTERNATING CURRENT ELECTRONIC TRIP CIRCUIT WITH ARC FAULT DETECTION CIRCUIT AND POWER SUPPLY - An electrical switching apparatus includes a transductor circuit that senses a direct current between an input terminal and an output terminal and outputs an alternating current proportional to the direct current. The electrical switching apparatus also includes a current sensor configured to sense an alternating current component of the direct current. The electrical switching apparatus further includes an alternating current electronic trip circuit including an arc fault detection circuit configured to detect an arc fault based on the sensed alternating current component. The alternating current electronic trip circuit is also configured to control pairs of separable contacts to trip open based on the alternating current output from the transductor circuit or the detected arc fault. The electrical switching apparatus also includes a power supply structured to provide direct current power to the alternating current electronic trip circuit. | 12-29-2016 |
