14th week of 2013 patent applcation highlights part 15 |
Patent application number | Title | Published |
20130082590 | ORGANIC ELECTROLUMINESCENT LIGHTING ELEMENT ARRAY AND ORGANIC ELECTROLUMINESCENT LIGHTING ELEMENT - An organic electroluminescent (OEL) lighting element disposed on a substrate includes a first electrode, a second electrode, an OEL layer, an auxiliary electrode, a patterned scattering layer, and a patterned dielectric layer. The second electrode is opposite to the first electrode having a first refraction index. The OEL layer is disposed between the first electrode and the second electrode. The auxiliary electrode is disposed between the first electrode and the second electrode, electrically connected to the first electrode, and separated from the OEL layer by a gap. The patterned scattering layer is disposed between the first electrode and the auxiliary electrode, covers the auxiliary electrode, and has a second refraction index greater than or substantially equal to the first refraction index. The patterned dielectric layer is disposed between the auxiliary electrode and the second electrode, covers the auxiliary electrode, and is disposed between the auxiliary electrode and the OEL layer. | 2013-04-04 |
20130082591 | HETEROCYCLIC COMPOUND, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE - To provide a novel heterocyclic compound that can be used as a host material in which a light-emitting substance of a light-emitting layer is dispersed. A heterocyclic compound comprising a dibenzo[f,h]quinoxaline ring and two hole-transport skeletons, where the dibenzo[f,h]quinoxaline ring and the two hole-transport skeletons are bonded to an aromatic hydrocarbon group. A heterocyclic compound represented by the following general formula (G1) is provided. | 2013-04-04 |
20130082592 | DISPLAY DEVICE - A display device is discussed. According to an embodiment, the display device includes a substrate; a first electrode positioned on the substrate; a second electrode; an organic emission layer interposed between the first electrode and the second electrode; an organic insulating film positioned on the second electrode and surrounding an emission area emitting light from the organic emission layer; and a passivation film covering the organic insulating film. | 2013-04-04 |
20130082593 | LIGHT EMITTING APPARATUS AND LIGHT UNIT - A light emitting device includes: a body including a cavity formed with a stepped section; an electrode of which one end is disposed on the stepped section and the other end is disposed outside of the body; a metal layer including a main frame and a sub frame extended from the main frame; and a light emitting diode disposed on the metal layer, wherein a bottom surface of the main frame is exposed out from a bottom surface of the body, wherein a portion of a top surface of the main frame is exposed to the cavity, and wherein an area of the top surface of the main frame is larger than an area of the bottom surface of the main frame. | 2013-04-04 |
20130082594 | MAGNETRON - A magnetron has an anode and a cathode. The cathode includes two parts joined by sleeves of ferrous alloy spaced by a sleeve of insulating material. The ferrous alloy sleeves are adapted to be connected to opposite poles of a power supply for heating the cathode. A high frequency power supply is used to heat the cathode. The ferrous alloy sleeves have a surface coating of conductive material. The currents induced by the magnetic field generated by the high frequency currents of the power supply are largely confined to the conductive coating due to the skin effect, avoiding the heating of and losses in the ferrous alloy itself which would otherwise ensue. | 2013-04-04 |
20130082595 | LIGHTING APPARATUS - A lighting apparatus includes: an LED module; a power supply part supplying electricity to the LED module; a heat sink releasing heat generated by the LED module; a cap containing in the inside at least a part of the power supply part; and an insulating member located between the cap and the heat sink. In the insulating member, one end side has a connection part connected to the inside of the cap. The connection part has an opening part conducting heat from the power supply part to the cap. Since the opening part is provided in the connection part connected to the inside of the cap, a part of the power supply part is arranged in the inside of the cap without being blocked by the insulating member. | 2013-04-04 |
20130082596 | LIGHT DETECTOR TO CONTROL A HYBRID LAMP - A lamp assembly provides both instant light through use of an incandescent/halogen lamp source and an energy saving type light provided by a compact fluorescent lamp source. Both light sources are enclosed within a common envelope or outer bulb. The sensor member monitors light output from a central region of the CFL at a region spaced from the first and second ends in order to obtain an accurate representation of full light output from the CFL before shutting off or terminating power to the incandescent lamp source. | 2013-04-04 |
20130082597 | ELECTRICAL MODULE AND METHOD FOR ILLUMINATING A HIGH INTENSITY DISCHARGE (HID) LAMP ON A VEHICLE - The invention is directed to an electrical module and a method for illuminating a HID lamp on a vehicle, and in particular an off-road recreational vehicle. The electrical module and the method involve a capacitor and a voltage delay mechanism. The capacitor may be charged during the operation of the vehicle or when the operator wishes to illuminate the HID lamp. The voltage delay mechanism comprises a charge-actuated switch and a breakdown voltage means for preventing the supply of current to the HID lamp until the capacitor is charged to a voltage sufficient to illuminate the HID lamp. The voltage delay mechanism also comprises a power-actuated latch relay for maintaining the charge-actuated switch in a position that bypasses the breakdown voltage device, so that the HID lamp remains illuminated even after the voltage has decreased to the operating requirements of the HID lamp. | 2013-04-04 |
20130082598 | BULB LIGHTING DEVICE AND SYSTEM COMPRISING SUCH DEVICE TO MONITOR PATIENTS IN HOME ENVIRONMENT - A bulb lighting device is provided. The bulb device comprises a base, a driving electronics unit comprising a power supply electrically connected to the base and a battery connected to the power supply through a battery management unit, and a communication unit comprising a communication interface and at least one of a wireless unit and a power line unit, wherein the communication unit is electrically connected to the driving electronics unit. The bulb device further comprises an LED module having LED flight sources in an LED array together with an electric driving LED controller arranged inside an at least partially transparent envelope, wherein the LED module is electrically connected to the driving electronics unit, and a motion detector arranged inside the envelope and electrically connected to the driving electronics unit, wherein an output signal of the motion detector is forwarded outside of the bulb lighting device through the communication unit. | 2013-04-04 |
20130082599 | TRANSFORMER-COUPLED RF SOURCE FOR PLASMA PROCESSING TOOL - A RF source and method are disclosed which inductively create a plasma within an enclosure without an electric field or with a significantly decreased creation of an electric field. A ferrite material with an insulated wire wrapped around its body is used to efficiently channel the magnetic field through the legs of the ferrite. This magnetic field, which flows between the legs of the ferrite can then be used to create and maintain a plasma. In one embodiment, these legs rest on a dielectric window, such that the magnetic field passes into the chamber. In another embodiment, the legs of the ferrite extend into the processing chamber, thereby further extending the magnetic field into the chamber. This ferrite can be used in conjunction with a PLAD chamber, or an ion source for a traditional beam line ion implantation system. | 2013-04-04 |
20130082600 | LED LIGHT BULB WITH INTEGRATED HEAT SINK - An LED lamp includes a lamp housing including an aluminum alloy substantially free of silicone. An electrical circuit trace is disposed on the lamp housing. An LED is attached directly to the lamp housing and electrically connected to the electrical circuit trace. LED driver circuitry is electrically connected to the electrical circuit trace. A housing contains the LED driver circuitry. A threaded incandescent light-type electrical plug may be configured for reception into a standard incandescent light-type socket. The LED driver circuitry is electrically disposed between the electrical plug and the LED. The lamp housing may include a generally frusto-conical shape. A solder mask may be affixed over at least a portion of the electrical circuit trace. The lamp housing may be press formed. The lamp housing is in direct thermal conductive relation to the LED such that heat energy is dissipated from the LED directly to the lamp housing. | 2013-04-04 |
20130082601 | OVER-VOLTAGE HANDLING OF LIGHTING DEVICE - The present disclosure relates to a lighting device that employs at least one string of LEDs as a lighting source. The string of LEDs is coupled in series with a first semiconductor switch, wherein the string of LEDs and the first semiconductor switch are coupled between a power supply node and ground. During a period when the lighting device is powering up after being initially provided power by a power supply, the system controller is configured to monitor a drive current through the first string of LEDs and modulate a control signal provided to the first semiconductor switch based on the drive current to prevent the drive current from exceeding a maximum allowable drive current value for the first string of LEDs. | 2013-04-04 |
20130082602 | OVERCURRENT HANDLING FOR A LIGHTING DEVICE - The present disclosure relates to a lighting device that employs at least one string of LEDs as a lighting source. The string of LEDs is coupled in series with a first switch, wherein the string of LEDs and the first switch are coupled between a power supply node and ground. During a normal operation mode, a system controller is configured to operate the first switch to deliver a drive current to the string of LEDs from the power supply node. The system controller is associated with circuitry that allows the system controller to monitor the drive current and determine when an overcurrent condition occurs. Upon detecting the overcurrent condition, the system controller will open the first switch to stop the drive current from flowing through the string of LEDs. | 2013-04-04 |
20130082603 | LED Device with Simultaneous Open and Short Detection Function and Method Thereof - An LED device with simultaneous open and short detection function includes a plurality of LED strings, a voltage converter, a current driving unit, a loop control unit and an open and short detector. The open and short detector is utilized for performing LED open and LED short detection on the plurality of LED strings according to negative electrode voltages of the plurality of LED strings and a level variation trend of a second voltage converted from a first voltage by the voltage converter. | 2013-04-04 |
20130082604 | Low Cost LED Driver With Integral Dimming Capability - A distributed system for driving strings of series-connected LEDs for backlighting, display and lighting applications includes multiple intelligent satellite LED driver ICs connected to a an interface IC via serial bus. The interface IC translates information obtained from a host microcontroller into instructions for the satellite LED driver ICs pertaining to such parameters as duty factor, current levels, phase delay and fault settings. Fault conditions in the LED driver ICs can be transmitted back to the interface IC. An analog current sense feedback system which also links the LED driver ICs determines the supply voltage for the LED strings. | 2013-04-04 |
20130082605 | WIRELESS INTELLIGENT LAMP CONTROL METHOD AND SYSTEM, WALL SWITCH BASE, AND REMOTE SWITCH HANDSET - A wireless intelligent lamp control method is to be implemented by a remote switch handset for wireless communication with a wall switch base, and includes: receiving an ON signal set including at least one ON signal sent from a user-selected command key unit, and determining at least one of a number and a duration of the at least one ON signal; transmitting a wireless signal indicating the user-selected command key unit to the wall switch base for establishing a matching relation when the ON signal set includes only one ON signal and the duration thereof is longer than an ON threshold time; and wirelessly receiving the matching relation from the wall switch base, and storing the matching relation. | 2013-04-04 |
20130082606 | DEVICE AND METHOD FOR AUTOMATIC CALIBRATION OF ILLUMINATION SYSTEM AND ENERGY SAVING - The present invention provides a system for testing monitoring and calibrating illumination of plurality of lamps, operated by a control node. The system is comprised of: plurality of lamps units each unit including, a lamp, and control node for controlling power consumption wherein the control node comprises at least one of: a wireless, PLC transceiver or twisted pair, at least one mobile measurement device, for performing luminous measurements for each lamp unit and a computing unit for analyzing the luminous measurements results for determining the optimal parameters for operating the lamp according to the predefined luminous requirements for each lamp unit | 2013-04-04 |
20130082607 | REFLECTIVE AND TRANSFLECTIVE OPERATION MODES FOR A DISPLAY DEVICE - A direct-view display apparatus includes a transparent substrate, an internal light source, a plurality of light modulators coupled to the transparent substrate, and a controller for controlling the states of the plurality of light modulators and the internal light source. The controller is configured to cause the display to transition from one of a transmissive, reflective and transflective mode, to a second of said modes. | 2013-04-04 |
20130082608 | DIMMING BALLAST AND RELATED METHOD ALLOWING INDIVIDUAL CONTROL OF MULTIPLE LAMPS - A dimming ballast allowing individual control of multiple lamps is described. The ballast includes a lamp driver to control at least one lamp. Further, the ballast includes a current sensing module , connected as part of a feedback loop from the at least one lamp to the lamp driver, the current sensing module being configured with a maximum allowable output current value for each lamp. A lamp resonant circuit, connected between the lamp driver and the at least one lamp, operates over the entire range of the output current values. A lamp status module is coupled to the lamp driver for monitoring at least one condition related to the at least one lamp being controlled. Moreover, a control module controls the lamp driver independently based on a feedback loop from the lamp status module. Various embodiments of the dimming ballast along with related methods are also described. | 2013-04-04 |
20130082609 | Low Cost LED Driver With Integral Dimming Capability - A distributed system for driving strings of series-connected LEDs for backlighting, display and lighting applications includes multiple intelligent satellite LED driver ICs connected to a an interface IC via serial bus. The interface IC translates information obtained from a host microcontroller into instructions for the satellite LED driver ICs pertaining to such parameters as duty factor, current levels, phase delay and fault settings. Fault conditions in the LED driver ICs can be transmitted back to, the interface IC. An analog current sense feedback system which also links the LED driver ICs determines the supply voltage for the LED strings. | 2013-04-04 |
20130082610 | TEMPERATURE CURVE COMPENSATION OFFSET - A lighting device includes a first array of LEDs, a temperature sensor, memory, and a system controller. The memory may include a first duty cycle offset and first curve information that defines a relationship between temperature and a duty cycle for driving at least one LED of the first array of LEDs. The system controller will determine a temperature based on information from the temperature sensor. Based on the temperature, the system controller will determine a first pre-calibrated duty cycle that corresponds to the temperature from the first curve information and then adjust the first pre-calibrated duty cycle with the first duty cycle offset to generate a first calibrated duty cycle. The LED is then driven with a first pulse width modulated signal having the first calibrated duty cycle. | 2013-04-04 |
20130082611 | FEED FORWARD CONTROLLED VOLTAGE TO CURRENT SOURCE FOR LED DRIVER - A DC to DC converter receives a DC input voltage and generates an output DC voltage. A current sensor measures a DC input current. A control circuit is coupled to the current sensor for controlling the DC to DC converter to have a constant DC input current. | 2013-04-04 |
20130082612 | Light Emitting Devices and Systems Having Tunable Chromaticity and Methods of Tuning the Chromaticity of Light Emitting Devices and Systems - A light emitting device package assembly includes a light emitting device package body, and first, second and third white light emitting devices on the package body, each of the first, second and third white light emitting devices emits light when energized having a chromaticity that falls within a respective one of first, second and third non-overlapping chromaticity regions in a two dimensional chromaticity space. The first, second and third chromaticity regions are spaced apart in the two dimensional chromaticity space by respective regions having at least the size of a seven step MacAdam ellipse. Related solid state luminaires and methods are also disclosed. | 2013-04-04 |
20130082613 | MULTI-STRING LED DRIVING METHOD AND SYSTEM - A multi-string LED driving method and system requires generating pulse-width-modulated (PWM'd) driving signals to respective LED strings to control their brightness levels, and staggering the timing of the driving signals such that the number of LED strings driven on simultaneously varies over time by no more than one LED string. The PWM'd driving signals are generated to, for example, achieve local dimming for a display device which employs a multi-string LED backlight system; the present method enables local dimming to be achieved while maintaining a relatively constant load on the drive circuit. The staggering of the timing of the PWM'd driving signals is preferably implemented by arranging the ON times of the driving signals such that they occur serially, such that the loading imposed by the LED strings is spread throughout each switching cycle. | 2013-04-04 |
20130082614 | Low Cost LED Driver With Integral Dimming Capability - A distributed system for driving strings of series-connected LEDs for backlighting, display and lighting applications includes multiple intelligent satellite LED driver ICs connected to a an interface IC via serial bus. The interface IC translates information obtained from a host microcontroller into instructions for the satellite LED driver ICs pertaining to such parameters as duty factor, current levels, phase delay and fault settings. Fault conditions in the LED driver ICs can be transmitted back to the interface IC. An analog current sense feedback system which also links the LED driver ICs determines the supply voltage for the LED strings. | 2013-04-04 |
20130082615 | Low Cost LED Driver With Integral Dimming Capability - A distributed system for driving strings of series-connected LEDs for backlighting, display and lighting applications includes multiple intelligent satellite LED driver ICs connected to a an interface IC via serial bus. The interface IC translates information obtained from a host microcontroller into instructions for the satellite LED driver ICs pertaining to such parameters as duty factor, current levels, phase delay and fault settings. Fault conditions in the LED driver ICs can be transmitted back to the interface IC. An analog current sense feedback system which also links the LED driver ICs determines the supply voltage for the LED strings. | 2013-04-04 |
20130082616 | OVER-TEMPERATURE HANDLING FOR LIGHTING DEVICE - A lighting device employs at least one string of LEDs as a lighting source. The string of LEDs is coupled in series with a first switch, wherein the string of LEDs and the first switch are coupled between a power supply node and ground. During a normal operation mode, a system controller is configured to close the first switch to deliver a drive current to the string of LEDs from the power supply node. The system controller is further associated with a temperature sensor and is configured to detect an over-temperature condition based on information provided by the temperature sensor. Upon detecting the over-temperature condition, the system controller will open the first switch to stop the drive current from flowing through the string of LEDs. | 2013-04-04 |
20130082617 | CURRENT-SHUNTING ALTERNATING CURRENT LIGHT-EMITTING DIODE DRIVING CIRCUIT - A current-shunting AC LED driving circuit has a rectification unit, an LED unit, a voltage-controlled transistor, a shunt resistor, a current detection unit and a steady current control unit. The LED unit and the rectification unit constitute a power loop and acquire a pulsed DC power through the rectification unit. The voltage-controlled transistor and the current detection unit are serially connected to the power loop. The steady current control unit acquires an average loop current through the current detection unit to control the voltage-controlled transistor so that the LED unit can stably emit light. The shunt resistor is parallelly connected to the voltage-controlled transistor to constitute a current-shunting path to shunt the loop current flowing through the voltage-controlled transistor so as to reduce the power withstood by the voltage-controlled transistor. | 2013-04-04 |
20130082618 | SYSTEM, METHODS, AND DEVICES, FOR INAUDIBLE ENHANCED PWM DIMMING - Systems and methods for inaudible enhanced pulse width modulation (PWM) backlight dimming are provided. By way of example, an electronic display backlight system according to the present disclosure may include a backlight element and backlight driver circuitry. The backlight driver circuitry may drive the backlight element at various brightness levels using at least two individual duty cycles that occur immediately after one another. The backlight driver circuitry may vary the individual duty cycles such that none will ever reach 100% unless all are 100%, thereby preventing the occurrence of audible noise that might otherwise arise if an “on” PWM period from one individual duty cycle continued into the next. | 2013-04-04 |
20130082619 | CURRENT GENERATING CIRCUIT AND LED DRIVING CIRCUIT - A current generating circuit, for generating an output current to a target device, comprising: a current generating module; a grad power detecting circuit, for receiving a grad power signal and for generating a grad power detecting signal according to a voltage of the grad power signal; a feedback circuit, for generating a first feedback signal and a second feedback signal according to the output current; and a voltage converting controller, comprising a first input terminal and a second input terminal, wherein the first input terminal receives a grad power coupling signal generated by coupling the first feedback signal and the grad power detecting signal, and the second input terminal receives the second feedback signal, where the voltage converting controller controls the current generating module to generate the output current according to the grad power coupling signal and the second feedback signal. | 2013-04-04 |
20130082620 | HIGH FREQUENCY POWER SUPPLY DEVICE - A high frequency power supply device includes a high frequency power generation unit configured to output a high frequency power to be supplied to a load and a control unit configured to detect a mean value of the high frequency power to control the high frequency power generation unit. A power change period detection unit detects a period of a level change of the high frequency power that is detected at an output side of the high frequency power generation unit due to a periodic change of a level of a high frequency power that is given to a load from another high frequency power supply device as a power change period T | 2013-04-04 |
20130082621 | PRIMARY SIDE PFC DRIVER WITH DIMMING CAPABILITY - A primary side PFC driver circuit is disclosed that includes a switch control circuit for commanding a switch to allow an inductor coupled to an output load (e.g., LEDs) to transfer energy provided by an input voltage source. The switch control circuit provides two signals for commanding the switch. A first signal having a first frequency, with a duty cycle in proportion to the input voltage amplitude, commands the switch to allow the average input current to be proportional to the input voltage amplitude. A second signal having a second frequency higher than the first frequency pulses the output load with substantially constant current pulses based on a value of the first signal (e.g., while the first signal is high). The current pulses produce a substantially constant current in the output load. | 2013-04-04 |
20130082622 | METHOD FOR MIXING LIGHT OF LED CLUSTER - The method for mixing light of LED cluster is disclosed. Firstly, a plurality of LED cluster are provided, then the step is importing the related data, then the step for the continuous genetic algorithm and the merit function are respectively carried out, finally the step for exporting data is achieved. The applied field of the invention is able to comprise LED cluster, fluorescence light source array, and fluorescence lamp array, as well as the other light source field etc. | 2013-04-04 |
20130082623 | LIGHTING SYSTEM AND CONTROL METHOD THEREOF - A lighting system according to an embodiment includes a light source unit and a control circuit. The light source unit includes first, second, and third light sources. The control circuit controls an optical output of the light source unit with a predetermined color temperature by controlling the respective optical outputs of the first, second, and third light sources, and sets the optical output of the light source unit when any one of the first, second, and third light sources becomes the minimum optical output to the minimum optical output at the time of reducing the optical output of the light source unit in a state where the optical output of the light source unit maintains the predetermined color temperature. | 2013-04-04 |
20130082624 | LED DRIVER SYSTEMS AND METHODS - A light-emitting diode (LED) driver system includes a control circuit that provides a waveform for driving a power transistor to generate a regulated current through one or more LEDs, and an error amplifier that generates an output compensation signal based on a comparison of a desired regulated current and an actual regulated current through the one or more LEDs. The output compensation signal is used to set an output compensation voltage that sets the duty cycle of the waveform. The LED driver system further comprises a dimming control device configured during a dimming control mode to alternate between dimming-on time periods and dimming-off time periods, and a sample and hold switch having a first state for holding the output compensation voltage fixed during each dimming-off time period, and a second state for restoring the error amplifier to its previous dimming-on operating state upon returning to each subsequent dimming-on time period. | 2013-04-04 |
20130082625 | COLORIZER AND METHOD OF OPERATING THE SAME - Systems and methods for controlling the output of a plurality of light sources. The system can include four or more light sources (e.g. light emitting diodes (“LEDs”)) and a controller. The light sources are included in, for example, a luminaire. The respective outputs of the plurality of light sources are controlled using a hue and purity (“HP”) control technique. The HP technique includes selecting a dominant hue (e.g., green, blue, red, etc.). The purity of the selected hue is then modified to include or remove wavelengths of light adjacent to the selected hue. For example, if the selected hue is green, gradually reducing the purity of the selected hue gradually increases the presence of cyan and amber in the output of the luminaire. As the purity is reduced further, additional wavelengths of light are included, but the output of the luminaire remains, in essence, green. | 2013-04-04 |
20130082626 | SYSTEM AND METHOD FOR TRACTION MOTOR CONTROL - A control method comprises determining wheel creep of a wheel operably coupled to a traction motor and limiting a rate of change of an excitation frequency applied to the traction motor to drive the wheel, based on the determined wheel creep. According to one aspect, the rate of change of the excitation frequency is limited if the wheel creep exceeds a wheel creep threshold. | 2013-04-04 |
20130082627 | MOTOR CURRENT DETECTION APPARATUS, MOTOR CONTROLLER, AND ELECTRIC POWER TOOL - A motor current detection apparatus in the present invention includes: a current detection unit, a first filter, and a second filter. The detection unit detects a conduction current flowing from a battery to a brushless motor and outputs a conduction current signal corresponding to the detected conduction current. The first filter extracts a first current signal which is included in the conduction current signal outputted from the detection unit and is a signal component in a frequency band equal to or lower than a predetermined first cutoff frequency. The second filter extracts a second current signal which is included in the conduction current signal outputted from the detection unit and is a signal component in a predetermined frequency band within a frequency band equal to or lower than a predetermined second cutoff frequency higher than the first cutoff frequency and having the second cutoff frequency as a maximum value. | 2013-04-04 |
20130082628 | DC-DC CONVERTER - A DC-DC converter is configured with a voltage-source power converter at a primary side of a transformer, a current-source power converter at a secondary side of the transformer, and a controller. The DC-DC converter is connected between a storage battery and an inverter that drives an electric motor. The controller generates a first control input based on a voltage between input and output terminals of the voltage-source power converter, a second control input based on a voltage between input and output terminals of the current-source power converter, and a command value for PWM or PFM control based on the first and second control inputs and an input-output current flowing between one of the input and output terminals of the voltage-source power converter and the current-source power converter. Therefore, it is easy to switch between a powering state and a regenerating state. | 2013-04-04 |
20130082629 | MOTOR DRIVING DEVICE - Provided is a motor driving device. The motor driving device includes a drive signal generating unit, a current control unit, and a driving unit. The drive signal generating unit generates a motor drive signal for driving a motor. The current control unit is disposed at a front of the drive signal generating unit and controls a current of the drive signal generating unit so as to prevent noise and vibration of a motor caused by electromagnetic interference generated when a switch of the drive signal generating unit is turned on/off. The driving unit drives the motor based on the motor drive signal outputted from the drive signal generating unit. | 2013-04-04 |
20130082630 | DETERMINING ROTOR POSITION IN SENSORLESS SWITCHED RELUCTANCE MOTORS - A method for determining the position of a moving rotor in a switched reluctance motor includes the steps of applying a voltage to a phase winding of the reluctance motor, sampling a signal representative of the current magnitude in this phase winding, detecting a feature of the second temporal derivative of the signal, and determining the position of the moving rotor taking into account the occurrence of this feature. Apparatus for carrying out the method is described. | 2013-04-04 |
20130082631 | ELECTRIC POWER TOOL, LOCK STATE OCCURRENCE DETERMINATION APPARATUS, AND PROGRAM - A lock state occurrence determination apparatus includes a counter, a reset device, a reference time changing device, a lock state determination device, and an invalidation device. The invalidation device performs, in a case where a false determination of occurrence of a lock state of a motor is caused by the lock state determination device due to an operation input to operate a rotation speed of the motor, at least one of a first invalidation operation to invalidate the lock state determination device and a second invalidation operation to invalidate continuation of a counting operation by the counter. | 2013-04-04 |
20130082632 | ELECTRIC POWER TOOL - An electric power tool includes a motor that rotary drives an output shaft; an operation unit to input a drive command of the motor; a torque setting device that sets an upper limit value of a rotational torque of the output shaft in accordance with a torque setting command; and a control device that drives the motor in one of a forward direction and a reverse direction in accordance with the drive command, and stops driving of the motor when the rotational torque of the output shaft has reached the upper limit value set by the torque setting device during driving of the motor. The torque setting device is configured to set the upper limit value such that the upper limit value during driving of the motor in the forward direction and the upper limit value during driving of the motor in the reverse direction are different. | 2013-04-04 |
20130082633 | System and Method for Determining Position of Hall Sensors Relative to Stator Winding of Brushless DC or Synchronous AC Permanent Magnet Motor - A method is provided for monitoring a motor having a stator, a rotor and a detector. The stator can receive a driving signal to produce a first magnetic field. The rotor can rotate in a circle relative to the stator. The rotor has a magnetic portion that can emit a second magnetic field in a radial direction. The detector can output a detection signal based on the position of the rotor. | 2013-04-04 |
20130082634 | ACTUATOR POWER CONTROL CIRCUIT HAVING FAIL-SAFE BYPASS SWITCHING - A system for controlling power to actuators. For example, a controller may output a signal having a variable duty cycle waveform for controlling current to an actuator via an interface circuit between the controller and the actuator. Changing the duty cycle may change the amount of current to the actuator. The controller may provide a control signal that optimizes power consumption by the actuator for efficiency purposes. However, if the controller fails, then no control signal may be available to allow current to the actuator, particularly in situations where the actuator may need to be operationally tested. To avoid such situations, fail-safe bypass switching may be incorporated into the interface circuit. Upon absence of a control signal from the controller, the circuit may provide a default signal in lieu of the control signal to maintain current to the actuator. | 2013-04-04 |
20130082635 | System and Method for Controlling a Step Motor - In an embodiment, a method of controlling a step motor system includes operating the step motor system in a normal mode. In the normal mode, the step motor is advanced upon receipt of a step pulse. If a failure event is detected, the step motor is operated in a failure mode. In the failure mode, a failure counter is incremented upon receipt of the step pulse, and the step motor is not advanced. | 2013-04-04 |
20130082636 | SIGNAL PROCESSOR, FILTER, CONTROL CIRCUIT FOR POWER CONVERTER CIRCUIT, INTERCONNECTION INVERTER SYSTEM AND PWM CONVERTER SYSTEM - A signal processor is configured to perform a process equivalent to performing a series of fixed-to-rotating coordinate conversion, a predetermined process and then rotating-to-fixed coordinate conversion, while maintaining linearity and time-invariance. The signal processor performs a process given by the following matrix G: | 2013-04-04 |
20130082637 | PORTABLE SOLAR PANEL POWER SOURCE - An apparatus and method for portable solar panel assemblies configured to enable the unit to be transported by multiple means in order to provide both grid tied and off grid power as needed. Solar panel assemblies are configured to have a range of rotation of approximately 0 to 25 degrees in two directions to allow efficient sunlight capture. The solar panel assembly in the closed position will allow for more compact and aerodynamic profile when being transported. | 2013-04-04 |
20130082638 | Charging System and Charging Method - The present invention discloses a charging system, and the system comprises: a base which charges a mobile terminal or an own base battery and is connected with the mobile terminal and a base charger respectively; a mobile terminal control module which controls the base to charge the base battery after fully charging the mobile terminal, wherein the mobile terminal control module is located in the mobile terminal and connected with the base. A charging method is also disclosed by the present invention, and adopting the system and the method of the present invention can improve the charging efficiency and prevent the over-discharge of the base battery. | 2013-04-04 |
20130082639 | ELECTRICAL SYSTEM HAVING A PRIMARY ENERGY SOURCE AND A REDUNDANT RECHARGEABLE ENERGY SOURCE - Presented here is an electrical system for a vehicle having an electrical load. The electrical system includes a primary energy source, a rechargeable redundant energy source coupled to the primary energy source via a first switch, a second switch, a third switch, a fourth switch, and a control unit. The fourth switch is coupled between the electrical load and the second switch, and is coupled between the electrical load and the third switch. The control unit operates the first switch to facilitate charging of the rechargeable redundant energy source with the primary energy source, operates the second switch and the third switch in concert to selectively provide operating power from either the primary energy source or the rechargeable redundant energy source to the fourth switch, and operates the fourth switch to provide the operating power to the electrical load. | 2013-04-04 |
20130082640 | CHARGE/DISCHARGE INSTRUCTION APPARATUS, CHARGE/DISCHARGE INSTRUCTION METHOD AND CHARGE/DISCHARGE INSTRUCTION PROGRAM - One embodiment provides a charge/discharge instruction apparatus, including: a charge/discharge instruction unit which instructs a charge/discharge determination apparatus to perform a charge/discharge control of a battery; a charge/discharge information storage unit which stores charge/discharge information for charging/discharging the battery; a control unit which controls an access request to the battery based on the stored charge/discharge information and contents of the charge/discharge control; a generating unit which generates a communication message concerned with the access request controlled by the control unit; and a communication unit which transmits the communication message concerned with the access request to the charge/discharge determination apparatus. | 2013-04-04 |
20130082641 | CHARGE/DISCHARGE DETERMINATION APPARATUS, CHARGE/DISCHARGE DETERMINATION METHOD AND CHARGE/DISCHARGE DETERMINATION PROGRAM - One embodiment provides a charge/discharge determination apparatus for performing a charge/discharge control of a battery based on instructions given from charge/discharge instruction apparatuses, including: a battery information storage unit which stores battery information concerned with the battery; a charge/discharge information storage unit which stores charge/discharge information for charging/discharging the battery; a communication unit which receives a communication message concerned with an access request from each charge/discharge instruction apparatus; and a control unit which controls access from each charge/discharge instruction apparatus based on the battery information, the charge/discharge information and contents of the access request. | 2013-04-04 |
20130082642 | SODIUM LEVEL CONTROL IN INDIVIDUAL SEALED ANODE TUBES - An electrochemical cell includes an anode connectable to a current tap and a charging medium in electrical contact with the anode. A switching device is configured to stop a charging operation of the electrochemical cell upon activation by the charging medium. | 2013-04-04 |
20130082643 | METHOD AND APPARATUS TO CHARGE BATTERY OF MOBILE DEVICE - A charging method and apparatus, the apparatus including: an adaptor to receive power from a predetermined power source and output a first voltage; a narrow voltage direct current (NVDC) charging unit to convert the first voltage into a second voltage, and supply power to a battery and a system terminal of a mobile device; and a control unit to control the NVDC charging unit to adjust a charging current to be supplied to the battery based on a state of the system terminal, wherein the second voltage is lower than the first voltage. | 2013-04-04 |
20130082644 | CHARGER DETECTION WITH PROPRIETARY CHARGER SUPPORT - Method and apparatus, among other things, are provided for detecting a charger type. In an example, a method to classify a potential charger coupled to a port of an electronic device can include detecting the potential charger coupled to a USB-compatible port of the electronic device, applying a pull-down current to first and second data lines of the USB-compatible port to provide a first test voltage on each of the first and second data lines, and executing a primary detection process of a USB Battery Charging 1.2 Compliance Plan if the first test voltage on each of the first and second data lines is not between a first threshold and a second threshold using the pull-down current. | 2013-04-04 |
20130082645 | CHARGING DEVICE - Disclosed is a charging device capable of appropriately charging of a battery while preventing battery depletion. In a charging system including a charging device, when the output power from a solar battery is equal to or greater than a predetermined value, power is supplied to a charging control system which controls charging of batteries. Accordingly, when the output power from the solar battery is small, since the charging control system will not start, no power is consumed in the charging control system. As a result, battery depletion can be prevented. When the output power from the solar battery is equal to or greater than the predetermined value, charging of the battery is performed by the charging control system, thereby appropriately performing charging of the batteries. | 2013-04-04 |
20130082646 | Side Charging Inductor - Techniques involving a side charging inductor and associated functionality are described. In one or more implementations, the techniques describe a mobile device that includes a housing with a first side and a second side that are not substantially parallel to one another. The first side may include an exposed face upon which the mobile device is configured to rest on a surface, and the second side may include a coil for charging a battery of the mobile device using induction. | 2013-04-04 |
20130082647 | Low-Power Wireless Charging Apparatus And Method Thereof - Disclosed herein is a low-power wireless charging apparatus including: a plurality of primary coils corresponding to a plurality of receivers, respectively; a plurality of drivers periodically and sequentially transmitting receiver detect signals; a sensing unit detecting a current and a voltage according to a magnetic field changed by one or more of the plurality of primary coils; a comparator comparing the detected current and voltage with pre-set values; a low-power auxiliary control unit generating a wake-up signal when one or more receivers are present; and a main control unit turned on upon receiving the wake-up signal, and controlled to generate a wireless power signal for charging a corresponding receiver and transmit, whereby unnecessary power consumption can be prevented and the burden of the main control unit can be lessened, thus increasing efficiency. | 2013-04-04 |
20130082648 | POWER RECEIVING DEVICE AND CONTACTLESS POWER FEEDING SYSTEM - A power receiving device includes a resonant coil, an electromagnetic coupling coil, a rectifier circuit, a smoothing circuit, a voltage converter circuit which converts a voltage value of DC power into another voltage value, a control circuit which obtains voltage and current values of the DC power input to the voltage converter circuit, calculates an impedance from the obtained voltage and current values, and generates a pulse width modulation signal for controlling an output voltage and an output current of the voltage converter circuit, and a load to which the output voltage and the output current of the voltage converter circuit are input. The duty ratio of the pulse width modulation signal is determined so that the impedance calculated by the control circuit becomes close to an impedance for the maximum efficiency in transferring the AC power. The power receiving device is included in a contactless power feeding system. | 2013-04-04 |
20130082649 | WIRELESS CHARGING SYSTEM - Disclosed herein is a wireless charging system that includes a transmission device including a primary coil and a reception device including a secondary coil, wherein the transmission device detects an input signal provided from the primary coil to generate an output signal in the form of a pulse, and compares the level of the generated output signal with a reference voltage to generate a detection signal for determining the presence or absence of the reception device. The wireless charging system does not require an analog-to-digital converter (ADC), eliminating the necessity of using an ADC chip or a high-priced control circuit including an ADC block, thus reducing a material cost of the system. In addition, since the wireless charging system does not require a software algorithm for processing an ADC signal, the performance can be improved. | 2013-04-04 |
20130082650 | WIRELESS CHARGING SYSTEM - Disclosed herein is a wireless charging system that includes a transmission device including a primary coil and a reception device including a secondary coil, wherein the transmission device determines the presence or absence of the reception device upon receiving the remaining amount of current supplied from the primary coil to the secondary coil, and controls a voltage input to the primary coil based on the determination results. The wireless charging system can generate a sensing signal for determining the presence and absence of the reception device by measuring the amount of current applied from the transmitter coil to the receiver coil through the detection unit. Thus, the receiver controller of the wireless charging system can accurately determine whether to transmit power by comparing the sensing signal provided from the detection unit with a reference signal, thus reducing power consumption. | 2013-04-04 |
20130082651 | APPARATUS AND METHOD FOR WIRELESS CHARGING - Methods and apparatus are provided for wireless charging. Wireless power is supplied by a wireless power supply apparatus and is received at a wireless power reception apparatus. Wireless charging is performed by the wireless power reception apparatus. It is determined whether a human body is approaching while the wireless power reception power apparatus is receiving the wireless power. The wireless charging is interrupted, when it is determined that the human body is approaching. | 2013-04-04 |
20130082652 | WIRELESS POWER TRANSMITTING APPARATUS AND METHOD - Disclosed herein is a wireless power transmitting apparatus and method of wirelessly a power sequentially to a plurality of power receiving apparatuses. According to the wireless power transmitting apparatus and method, a power is wirelessly transmitted through a plurality of power transmitting coils, and a power transmitting control unit performs a control to allocate priorities to the plurality of power receiving apparatuses charged with the power transmitted by the power transmitting coils by judging whether or not the plurality of power receiving apparatuses have been mounted in portable terminals and charged states of the plurality of power receiving apparatuses in the case in which the number of power receiving apparatuses is plural and sequentially transmit the power to the plurality of power receiving apparatuses according to the allocated priorities to charge the power in the plurality of power receiving apparatuses. | 2013-04-04 |
20130082653 | WIRELESS POWER MULTI-CHARGING METHOD AND POWER TRANSMITTER - A wireless multi-charging method of a power transmitter that wirelessly transmits power includes sensing a first power receiver, increasing a transmission power required for charging the first power receiver, sensing a second power receiver, decreasing the transmission power required for suspending charging of the first power receiver, and increasing the transmission power required for simultaneously charging both the first power receiver and the second power receiver. | 2013-04-04 |
20130082654 | ELECTRIC VEHICLE CHARGING APPARATUS, ELECTRIC VEHICLE CHARGING SYSTEM INCLUDING THE SAME, AND ELECTRIC VEHICLE CHARGING METHOD - Provided is an electric vehicle charging apparatus, and more particularly, an electric vehicle charging apparatus that periodically transmits a consumed amount of power to a cost claim server, so as to claim a cost per unit time. The charging apparatus includes a charging certification unit receiving certification information of the electric vehicle, a power measurement unit generating power consumption information as a result obtained by calculating an amount of power consumed for charging the electric vehicle, and a communication unit transmitting the certification information to a certification server, and transmitting the power consumption information to a cost claim server. | 2013-04-04 |
20130082655 | CHARGING CONTROL APPARATUS AND CHARGING CONTROL METHOD - A method for controlling charge after judging as to whether a charging cable CC connected to a charging inlet E | 2013-04-04 |
20130082656 | PORTABLE ELECTRONIC DEVICE CHARGEABLE VIA AT LEAST ONE SPEAKER PORT - A portable electronic device chargeable via at least one speaker port is provided. The portable electronic device comprises a housing containing: a processing unit, a least one speaker for playing audio signals; a power pack for powering the portable electronic device, including the processing unit; and a charging circuit electrically connected to the power pack for charging the power pack from an external power source. The portable electronic device further comprises at least one speaker port for enabling sound from the at least one speaker to exit the housing, the at least one speaker port enabled to convey power from the external power source to the charging circuit such that the power pack is chargeable via the at least one speaker port. | 2013-04-04 |
20130082657 | CHARGING SYSTEM FOR A RECHARGEABLE POWER SOURCE - There is provided a power source system which includes a self-charging system. In one embodiment, the power source system is used to power portable devices and may include a power source such as a set of rechargeable batteries or a battery pack. The power source system comprises a self-charging system which includes an energy harvester operatively connected to a vibrational energy source such as a plurality of piezoelectric elements (piezos). The piezos preferably include a plurality of cantilevers which are composed of a piezoelectric material which may be the same or may be different from the substrate material of the piezos. | 2013-04-04 |
20130082658 | BATTERY PACK FOR ELECTRIC POWER TOOL - A battery pack for an electric power tool includes a control device that determines the necessity of a balancing control to reduce difference in voltages of cells of a battery based upon voltages of the respective cells measured by a voltage measuring device. The control device controls a subject cell, which is subject to the balancing control to discharge via the discharging device when the balancing control is determined to be necessary. A voltage measuring device measures the voltages of the respective cells when a battery charger detecting device detects the connection of the battery charger in a state where the battery has not been connected to the battery charger for a predetermined specified period of time or more and power feeding to the electric power tool has not been performed for the specified period of time or more. | 2013-04-04 |
20130082659 | BATTERY PACK, ELECTRICITY ACCUMULATION SYSTEM, ELECTRONIC INSTRUMENT, ELECTRIC VEHICLE, AND ELECTRIC POWER SYSTEM - Provided is a battery pack including: an exterior case formed with one or more hole sections; a battery cell in which a positive electrode terminal section is formed on one end surface thereof and a negative electrode terminal section is formed on the other end surface thereof; a battery holder having a plurality of battery cell receiving sections receiving the battery cell; and a metal plate joined to the battery holder and formed with a terminal contact section. | 2013-04-04 |
20130082660 | BATTERY LIFECYCLE MANAGEMENT OF A DUAL BATTERY HANDSET - Portable electronic devices, systems and methods are provided for managing battery usage of a dual-battery handset including a embedded battery and for receiving a replaceable battery operatively connected to the embedded battery. An embedded battery of a portable electronic device is monitored and in response to detection of a battery deterioration event, controlling a discharge rate of the embedded battery and a discharge rate of the replaceable battery. | 2013-04-04 |
20130082661 | Mobile Power Systems for High Power Applications - Some embodiments relate to a mobile power system. The system includes a first battery module including a number of rechargeable cells. A first battery module current limiter is configured to monitor a current flowing to or from the plurality of rechargeable cells of the first battery module. The battery module current limiter is further configured to selectively limit the current flowing to a non-zero current that is less than a predetermined current threshold, wherein the selectively limiting is based on whether the monitored current is approaching the predetermined current threshold. | 2013-04-04 |
20130082662 | CIRCUITS, DEVICES, METHODS AND SYSTEMS TO SECURE POWER-UP FOR BATTERY OPERATING DEVICES EVEN WITH LOW CURRENT CHARGERS AND TO EXECUTE OTHER PERFORMANCES - An electronic power control circuit includes a power conditioner circuit ( | 2013-04-04 |
20130082663 | DISCHARGE SYSTEM AND ELECTRIC VEHICLE - In a discharge system that outputs DC power from a vehicle battery to the outside, improved safety is obtained during discharge of the battery. A discharge system includes an electric car having a battery unit mounted thereon, and a discharge device that discharges the battery unit. The electric car includes a connector to which the discharge device is connected, and a power line that connects the connector and the battery unit to each other. In the power line, switches and switching elements are provided. The switches render the power line conducting upon permission from the discharge device and a battery management unit. The switching elements adjust a current flowing in the power line when the battery unit is discharged. | 2013-04-04 |
20130082664 | CHARGING METHOD AND CHARGING SYSTEM FOR LITHIUM ION SECONDARY BATTERY - Charging of a lithium ion secondary battery including a positive electrode including a positive electrode active material capable of absorbing and releasing lithium ions, a negative electrode including a negative electrode active material being an alloy-formable active material capable of absorbing and releasing lithium ions, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte is performed. In charging, the remaining capacity and the temperature of the lithium ion secondary battery are detected, and the lithium ion secondary battery is charged until the battery voltage reaches a reference voltage E | 2013-04-04 |
20130082665 | Charger Calibrating Device and Calibrating Method Thereof - A charger calibrating device and a calibrating method thereof. The device comprises a control module and a processing module. The control module controls a charger to be calibrated to perform a first stage charging and a second stage charging on an electronic device. The processing module performs an adjusting process according to the second stage charging time for adjusting the high level period of the PWM signal in the charging circuit of the charger. In the adjusting process, generating an updated high level period by adding or decreasing a preset adjusting amplitude, and decrease the preset adjusting amplitude by half to generate an updated adjusting amplitude. The processing module terminates the calibrating process after repeating the aforementioned calibrating loop a preset number of times. | 2013-04-04 |
20130082666 | BUCK POWER FACTOR CORRECTION SYSTEM - The invention disclosed buck power factor correction system. The system includes: a first storing device, for storing and discharging energy; a first converter device, coupled to the first storing device, for transferring and converting energy; a second storing device, coupled to the first storing device, for storing and discharging energy; and a second converter device, coupled to the second storing device, for transferring and converting energy. | 2013-04-04 |
20130082667 | POWER MANAGEMENT CIRCUIT FOR WIRELESS COMMUNICATION DEVICE AND PROCESS CONTROL SYSTEM USING SAME - A power management circuit comprises an energy pump, a control circuit and a power consuming circuit. The power management circuit is connected in serial with a current loop in a serial connection with a field device to cause a regulated voltage drop across the serial connection at an insertion voltage and to output an electrical power derived from the insertion voltage. The energy pump inputs at least a portion of the insertion voltage, and a feedback sense, and output a charging voltage based on the feedback sense. The charging voltage sources the electrical power output by the power management circuit. The control circuit regulates the insertion voltage by modulating the feedback sense to the energy pump, and modulates the feedback sense in response to an electrical change in the current loop. The power consuming circuit receives the electrical power from the power management circuit. | 2013-04-04 |
20130082668 | SINGLE-INDUCTOR MULTIPLE-OUTPUT DC TO DC CONVERTER - A DC to DC converter includes a switching circuit and a controller. The switching circuit includes an inductor coupled to first and second voltage supply nodes and to a plurality of output loads. The controller is configured to monitor a current through the inductor and to selectively couple the inductor to each of the plurality of output loads such that at least one of the following criteria is met: 1) an average current through the inductor is minimized for the particular output loads coupled to the switching circuit, or 2) minimize a number of times the switching circuit is switched during a charging period for the particular output loads coupled to the switching circuit. | 2013-04-04 |
20130082669 | SCALABLE MULTIPHASE-REGULATOR POWER-INTEGRATED CIRCUIT SYSTEM AND METHOD FOR PROVIDING SCALABLE POWER TO THE SAME - In one embodiment, a modular master chip includes an output module, a phase control module in communication with the output module, the phase control module including a master chip switch, wherein the phase control module is adapted for regulating the master chip switch at one or more interleaved clock speeds with one or more phase shifts, and a control module in communication with the output module and the phase control module, the control module being adapted for monitoring an amount of current drawn by a current load, determining one or more interleaved clock speeds, sending the one or more interleaved clock speeds, and regulating a scalable amount of current supplied to the current load by adjusting a number of output modules contributing to the scalable amount of current supplied to the current load. More methods and systems are described according to other embodiments. | 2013-04-04 |
20130082670 | VOLTAGE REGULATOR SYSTEM AND METHOD FOR EFFICIENCY OPTIMIZATION USING DUTY CYCLE MEASUREMENTS - A method and system control the adding or dropping of phases in a multiphase voltage regulator. The regulator has an efficiency and this efficiency of the regulator is calculated for a given number of phases being activated from an output voltage, input voltage, output current, and duty cycle of the regulator. The efficiency of the regulator is also calculated if a phase is added using the derivative of the duty cycle as a function of the output current. The efficiency of the regulator is further calculated if a phase is dropped using the derivative of the duty cycle as a function of the output current. From these operations of calculating, a phase is either added, dropped, or the phase is maintained at its current value to thereby optimize the efficiency of the regulator. | 2013-04-04 |
20130082671 | Low noise voltage regulator and method with fast settling and low-power consumption - A voltage regulator controls a regulated output voltage (Vout) by feeding it back to a differential input stage ( | 2013-04-04 |
20130082672 | CAPACITOR-FREE LOW DROP-OUT REGULATOR - There is provided a low drop-out regulator. The low drop-out regulator includes an amplifier including an odd number of operational amplifiers connected to one another in series, and an output unit including a pass transistor operated by an output from the amplifier and generating an output voltage to be applied to a load, wherein the pass transistor is an N-channel transistor, and the amplifier controls a feedback loop gain between an output terminal of one of the odd number of operational amplifiers and the output unit. The feedback loop gain may be controlled independently from the trans-conductance of the pass transistor, whereby the stable output voltage may be generated, even in the case that the load and the input voltage are changed, and the design parameter may be simplified. | 2013-04-04 |
20130082673 | SWITCHING DEVICE AND METHOD OF CONTROLLING SWITCHING DEVICE - A switching device is disclosed in which electric current through a rectification circuit, depending on whether a main switching element turns on or off, and thus electric current from the rectification circuit flows through whichever of first and second sub-switching elements, turns on. By controlling the turning on and off of the first and second sub-switching elements, the switching is performed which determines through which of the first and second output circuits the electric current from the rectification circuit flows. Thus, a voltage that is a result of transforming a voltage from a DC power supply in response to the electric current flowing through the first output circuit, is output from a first output terminal, and a voltage that is a result of transforming a voltage from the DC power supply in response to the electric current flowing through the second output circuit, is output from a second output terminal. | 2013-04-04 |
20130082674 | OPTIMIZING ISOLATED POWER SUPPLY LOOP GAINS FOR OPTO-COUPLER CURRENT TRANSFER RATIO VARIATIONS - A method of optimizing a gain adjustment value Kadj for a digital controller in an isolated switched mode power supply. The power supply includes an opto-coupler having a current transfer ratio (CTR | 2013-04-04 |
20130082675 | Digital Switching Converter Control - A control circuit can control the operation of a switching converter to provide a regulated load current to a load. The switching converter includes an inductor and a high-side and a low side-transistor for switching the load current provided via the inductor. A digital modulator is configured to provide a modulated signal having a duty cycle determined by a digital duty cycle value. A current sense circuit is coupled to at least one of the transistors and is configured to regularly sample a load current value. A comparator is coupled to the current sense circuit and is configured to compare the sampled load current value with a first threshold and to provide a respective comparator output signal. A regulator is configured to receive the comparator output signal and to calculate an updated digital duty cycle value. | 2013-04-04 |
20130082676 | Fast-settling precision voltage follower circuit and method - A voltage follower circuit including an input stage for generating a difference between the input signal and the output signal. An output circuit receiving the first signal and producing the output signal. A slew boost circuit includes a first transistor having a control electrode for receiving the input signal, a first electrode coupled to a first current source, and a second electrode coupled to a first supply voltage, a second transistor having a control electrode coupled to the first electrode of the first transistor, a first electrode coupled to the first signal, and a second electrode coupled to the first supply voltage, and a third transistor having a control electrode coupled to the first electrode of the first transistor, a first electrode coupled to the first signal, and a second electrode coupled to a second supply voltage. | 2013-04-04 |
20130082677 | OUTPUT DRIVING DEVICE - The present invention is related to an output driving device. The output driving device includes: a stabilization unit for generating a correction voltage with a level lower than a power voltage; a first buffer unit for generating a first driving voltage with a swing width; a second buffer unit for generating a second driving signal with a swing width; and an output driving unit for generating an output signal in response to the first and the second driving signals. Accordingly, by supplying a plurality of driving signals with swing widths different from each other corresponding to the characteristics of each output unit respectively, it can set the gate voltage flown into the first output unit not to exceed the breakdown voltage between the gate and the source of the first output unit and can protect the devices of the first output unit as the PMOS transistor. | 2013-04-04 |
20130082678 | ELECTRONIC POWER CONDITIONER CIRCUIT - An electronic power conditioner circuit for use in an I EC 61 158 Fieldbus network comprising a series element, a capacitor and a resistor formed as a gyrator circuit, and a biasing circuit, in which said biasing circuit supplies a control voltage and/or current to a control terminal of the series element, and in which said biasing circuit is adapted to set said control voltage and/or current such that a voltage drop across the series element is maintained at a pre-determined level. | 2013-04-04 |
20130082679 | Systems and methods for locating a circuit - Systems and methods presented herein are generally directed to the location and/or identification of a circuit within a circuital system. In one embodiment, a transmitter is configured for inducing signals upon a plurality of circuit lines (e.g., power lines, communication lines, lighting circuits, etc.) with each circuit line having a unique signal to identify it from other circuit lines. Each signal may be induced upon an individual circuit line by means of a inductive coupling clip coupled about the circuit line. The transmitter may be used at a distribution point of the circuit lines, such as circuit breaker box. A receiver can then receive a signal from a distal point on the circuit line to acquire the unique signal induced thereon and identify determine which inductive coupling clip is coupled thereto. For example, the signal may be decoded to display a number of the circuit line being tested. | 2013-04-04 |
20130082680 | ELECTROSTATIC DISCHARGE TESTING APPARATUS - An electrostatic discharge testing (ESD) apparatus includes a platform, a control unit, an ESD gun, an X rod, a Y rod, and a Z rod respectively parallel to designated XYZ axes of the platform. The Z rod is slidably disposed on the X rod via a first sliding joint, and the Y rod is slidably disposed on the Z rod via a second sliding joint. The ESD gun is disposed on the Y rod. The control unit controls the Z rod to slide along the X rod, and controls the Y rod to slide along the Z rod and along an axis of the Y rod, according to a predetermined testing program. Thus, the ESD gun is moved along a working path to test a product. | 2013-04-04 |
20130082681 | DETECTING CIRCUIT - A detecting circuit for detecting a feedback voltage of a pixel circuit includes a converting unit, a control chip and a display unit. The converting unit electrically connected to the pixel circuit performs an analog-to-digital operation to convert the feedback voltage into a digital signal. The control chip electrically connected to the converting unit controls the converting unit to perform the analog-to-digital operation and processes the digital signal to generate a display information. The display unit electrically connected to the control chip displays a voltage value of the feedback voltage according to the display information. | 2013-04-04 |
20130082682 | PEAK DETECTOR - A technique includes using a comparator to indicate whether a magnitude of a monitored signal is within predetermined boundaries and controlling a threshold of the comparator based on a history of the indication. | 2013-04-04 |
20130082683 | POWER MEASUREMENT DEVICE - Provided is a power measurement device including a detection part configured to detect a supply current and a supply voltage from a commercial alternating current power supply, a frequency control part configured to transit a fundamental frequency by the supply current and the supply voltage to an intermediate frequency, a conversion part configured to generate a digital current value and a digital voltage value of the supply current and the supply voltage having the intermediate frequency applied from the frequency control part and transit the intermediate frequency to the fundamental frequency again, and a calculation/control part configured to calculate wattage using the digital current value and the digital voltage value, which are output signals of the conversion part. | 2013-04-04 |
20130082684 | VOLTAGE MONITOR - A voltage monitor comprising a first capacitive potential divider for presenting an attenuated representation of an input voltage to a comparator. | 2013-04-04 |
20130082685 | FAST AC VOLTAGE DETECTOR - A fast AC voltage detector includes a bridge rectifier connected to an AC power source, a threshold detector connected to an output of the bridge rectifier, a voltage isolation circuit connected to the threshold detector, a continuous voltage averager connected to an output of the voltage isolation circuit, and a Schmidt trigger connected to the continuous voltage averager. The Schmidt trigger is operable to output a first voltage level when a load is preset on said AC power source and a second voltage level when no load is present on said AC power source | 2013-04-04 |
20130082686 | VOLTAGE MEASURING APPARATUS FOR BUCK CIRCUIT - A voltage measuring apparatus electrically connected to buck circuits includes the same number of RC circuits as there are buck circuits, an analog/digital (A/D) convertor, a controller, and a display unit. Each RC circuit is configured to be electrically connected in parallel with an inductor of one corresponding buck circuit. The A/D convertor selectively obtains an analog voltage of one of the buck circuits, and converts the analog voltage signal into a digital voltage signal. The controller controls the A/D convertor and receives the digital voltage signal from the A/D convertor. The display unit displays a decimal voltage value based on the digital voltage signal. | 2013-04-04 |
20130082687 | TRANSMITTER CALIBRATION SYSTEM - Systems and methods are provided for calibrating a transmitter system. A directional coupler is configured to provide a first signal representative of a forward power of an RF signal and a second signal representative of a reflected power of the RF signal. A splitting assembly is configured to generate respective third and fourth signals, each representative of the forward power, from the first signal. A switching assembly is configured to select between the second signal and the third signal. A system control is configured to determine an associated power of each of the fourth signal and a signal provided by the switching assembly. | 2013-04-04 |
20130082688 | LOW-POWER RF PEAK DETECTOR - Techniques are disclosed relating to radio frequency (RF) power detection. In one embodiment, a power detection circuit includes a multiplier circuit configured to multiply a first voltage signal by a second voltage signal. The multiplier circuit receives the first voltage signal at gates of a first transistor pair and receives the second voltage signal at gates of second and third transistor pairs. In some embodiments, a drain of a first transistor in the first transistor pair is coupled to sources of the second transistor pair, and drain of a second transistor in the first transistor pair is coupled to sources of the third transistor pair. In some embodiments, the power detection circuit includes a comparison circuit that compares the first pair of currents and a second pair of currents associated with a threshold voltage signal. | 2013-04-04 |
20130082689 | METHODS FOR SENSING CURRENT IN A SWITCHING REGULATOR - In one embodiment, a current sensing circuit includes a differential current sensing amplifier adapted for sensing a voltage drop across a main transistor, the differential current sensing amplifier being adapted for providing a switched current output to a timing circuit which is adapted for providing a timing signal to one or more switching current sample-and-hold circuits based on a current waveform of the switched current output, and the one or more switching current sample-and-hold circuits, each of which are adapted for producing a substantially continuous output current. In another embodiment, a method for detecting a current includes driving a main transistor with a first current, driving one or more sensing transistors with a second current, measuring a sensing inductor current of the one or more sensing transistors, and determining the first current based on the sensing inductor current, wherein the sensing inductor current is related to the first current. | 2013-04-04 |