Class / Patent application number | Description | Number of patent applications / Date published |
361152000 | Including particular drive circuit | 49 |
20080218930 | Control Apparatus and Control Method of Electromagnetic Drive Valve Operating Mechanism - When a target valve timing determined in accordance with the state of operation of an internal combustion engine is acquired, a feed forward control of setting a command timing of a valve body on the basis of the target valve timing and a predicted delay time is performed, and a feedback control of setting the actual delay time in the previous cycle as a predicted delay time for the next cycle is performed. The valve timings (opening, closure) are specified at a timing at which the valve body reached a position that is apart from a pre-determined position on a basis of a buffer height of a buffer mechanism. This makes it to possible to accurately detect the actual delay time in the feedback control, and allows the command timing to be properly set in the feed forward control. | 09-11-2008 |
20080316670 | Voltage generator - A voltage generator used to generate a voltage for driving a vehicle fuel injector includes a microcomputer, a coil, and a capacitor. The microcomputer calculates an interval at which the fuel injector is driven. When the interval is less than or equal to a predetermined time period, the microcomputer causes a first current to flow through the coil so that the capacitor is charged to a first level by counterelectromotive force produced in the coil. When the interval is greater than the time period, the microcomputer causes a second current less than the first current to flow through the coil so that the capacitor is charged to a second level less than the first level. The fuel injector is driven by the capacitor voltage. | 12-25-2008 |
20090015979 | SOLENOID VALVE DRIVING CIRCUIT AND SOLENOID VALVE - A current detection circuit generates a pulse signal Sd based on a voltage Vd corresponding to a current I flowing through a solenoid coil, and feeds the pulse signal Sd back to a PWM circuit of a switch controller. The PWM circuit generates a pulse signal Sr having a predetermined duty ratio, based on a comparison between the fed back pulse signal Sd and a voltage value corresponding to a first current value or a second current value, and supplies the pulse signal Sr to a pulse supplying unit. The pulse supplying unit supplies the pulse signal Sr as a first pulse signal S | 01-15-2009 |
20090080133 | ELECTRONIC MODULE FOR AC/DC COIL WITHIN AN ELECTROMAGNETIC CONTACTOR - The present invention relates to a device and a method for utilizing a control module as an interfaced control of a dually configured AC/DC control coil comprising monitoring a coil voltage of the control coil, determining if the coil voltage is greater than a predetermined dropout voltage, and determining if the coil voltage is greater than a predetermined pickup voltage. Further, a generated astable pulse is reset in the event that the coil voltage is determined to be less than the predetermined dropout voltage. | 03-26-2009 |
20090128980 | CIRCUIT ARRANGEMENT FOR CONTROLLING ELECTROMAGNETIC VALVES AND VALVE DEVICE WITH A CONTROLLABLE VALVE - A circuit arrangement for controlling electromagnetic valves, has a control unit that issues control signals for controlling the angular position of an electromagnetic valve and receives a reply signal regarding the value. The circuit arrangement receives the control signals of the control unit and issues the reply signal to it. A bridge circuit receives control signals from the circuit arrangement for the triggering of a valve servomotor and issues a reply signal, which indicates the angular position of the valve to the circuit arrangement. The circuit arrangement has an angular sensor that transmits a value, which indicates the angular position of the valve to the circuit arrangement. When a rise of the current of the servomotor above a predetermined threshold is detected, the bridge circuit sets a status flag. The circuit arrangement then transmits a predetermined level to the control unit, and the control unit detects the predetermined level. When a level is determined to be impermissible, the control unit requests the value, which indicates the angular position of the valve, from the circuit arrangement and processes this value. | 05-21-2009 |
20090231774 | Reed Switch Arrays - An array of reed switches ( | 09-17-2009 |
20090290277 | Relay driving module and an electronic device incorporating the same - A relay driving module is adapted for driving a latching relay, and includes a current limiting circuit, an energy storage component, and a switch circuit. The current limiting circuit is adapted for receiving a power signal, and draws an amount of current that does not exceed a current threshold from the power signal. The energy storage component is coupled electrically to the current limiting circuit for receiving the current from the current limiting circuit so as to store energy therein. The switch circuit is coupled electrically to the energy storage component, and is controlled by a control signal to selectively enable the energy storage component to discharge the energy stored therein so as to drive the latching relay. | 11-26-2009 |
20100079923 | MULTI-FUNCTION CIRCUIT INTERRUPTION ACCESSORY - A protection apparatus for a circuit breaker disposed in a circuit to be protected uses a solenoid configured to operate the circuit breaker on command, an undervoltage release (UVR) sensing apparatus configured to produce an UVR signal in response to a line voltage of the circuit to be protected falling below a predetermined level, and a shunt trip (ST) sensing apparatus configured to produce a ST signal when it senses a ST command. A controller operably connected to the UVR sensing apparatus, the ST sensing apparatus, and the solenoid, is configured to receive the UVR and ST signals when produced and controls the solenoid to open the breaker in response to receipt by the controller of either of the UVR and ST signals. | 04-01-2010 |
20100165534 | MAGNETIC FIELD GENERATION DEVICE - The present invention relates to a magnetic field generation device comprising a magnetic field generating element ( | 07-01-2010 |
20110075314 | METHOD FOR ACTUATING AN ELECTROMAGNETIC LOAD AND A CORRESPONDING CIRCUIT - A method is proposed for actuating an electromagnetic load ( | 03-31-2011 |
20110157757 | DEVICE AND METHOD FOR IDENTIFYING THE TYPE OF CONTROL FOR A VOLTAGE- OR CURRENT-RELEASE SWITCHGEAR - A device for identifying a control mode for a voltage or current release of a voltage-release or current-release switching device includes at least one control unit having first and second control inputs. The control unit includes a signal detection device configured to detect a signal state at a first control input and a blocking device configured to disable the second control input when a control signal is detected at the first control input. | 06-30-2011 |
20110222202 | Electromagnetic Valve Driving Circuit - Disclosed is an electromagnetic valve driving circuit capable of reducing a load of a booster circuit. | 09-15-2011 |
20110261497 | DEVICE FOR PRODUCING A MAGNETIC FIELD AND ADJUSTING THE INTENSITY OF THE MAGNETIC FIELD - A device for producing a magnetic field and adjusting the magnetic field's intensity includes a power source, a wire winding, a path switching module, a path control module, a first adjusting module, and a second adjusting module. The path switching module is electrically connected between the power source and the wire winding. The path control module controls the wire winding and the power source to form a first loop to produce a first magnetic field or a second loop to produce a second magnetic field by controlling the path switching module. The first adjusting module is located in the first loop and adjusts the intensity of the first magnetic field by adjusting current flowing through the first loop. The second adjusting module is located in the second loop and adjusts the intensity of the second magnetic field by adjusting current flowing through the second loop. | 10-27-2011 |
20110273812 | CONTROLLING CURRENT FLOW BY A COIL DRIVE OF A VALVE USING A CURRENT INTEGRAL - A device (100) and to a method allow for a direct injection valve having a coil drive (110) to reduce in particular the pulse to pulse variation of the volume of fuel injected by the direct injection valve by a control also based on a current integral of the coil drive (110), in particular during a boost phase of a current activation profile of the coil drive (110). The method can be carried out by a computer program. | 11-10-2011 |
20120106019 | SOLENOID PROTECTION CIRCUIT - A system prevents solenoids from overheating. The solenoid circuit has solenoids connected across a power supply. Control switches energize the solenoids by controllably connecting the solenoids to and from the power source. The protection system includes a master switch connected between the power source and the solenoids for simultaneously connecting and disconnecting all of the solenoids with the power source. A current sensor is positioned between the supply terminal of the power supply and the solenoids for detecting a current flowing between the supply and any of the solenoids and for producing a current-sensed signal. A controller detects abnormalities based on the current-sensed signal and responsively opens the master switch to disconnect all of the solenoids from the power source. | 05-03-2012 |
20120106020 | SWITCH CIRCUIT WITH INDEPENDENT DC POWER SUPPLY - A switch circuit with independent direct current (DC) power supply is provided. The switch circuit includes a switch unit, a power supply unit of the switch unit, an on/off unit of the power supply unit, and/or an on/off unit of the switch unit, and an on/off control signal transmission unit. Through the switch circuit with independent DC power supply, the problem of a waste of power consumption due to redundant power supply generated by a power supply unit when a switch unit is turned off in a conventional switch circuit sharing a DC power supply source with a control unit is effectively solved. In the provided switch circuit, the control unit and the switch unit respectively have independent power supply units, the power supply unit of the switch unit is turned on only when the switch unit needs to be turned on, and the power supply unit is turned off when the switch unit is turned off. | 05-03-2012 |
20120194961 | Injector Drive Circuit - An injector drive circuit including: a step-up circuit generating a high voltage from a power supply; a first switching device connected to a path between the step-up circuit and an injector; a second switching device connected to the power supply; a third switching device connected between the injector and the ground; and a control unit operating the first, second and third switching device according to a value of current flowing through the injector; wherein the control unit has a unit turning on and off the second switching device in a period during which it turns on and off the first switching device a plurality of times; wherein the control unit has, as set values to control the current flowing through the injector, a first threshold defining a lower current limit, a second threshold defining an upper current limit and a third threshold, larger than the second threshold. | 08-02-2012 |
20120268856 | NON-EXCITED OPERATION TYPE ELECTROMAGNETIC BRAKE CONTROL DEVICE AND METHOD - A non-excited operation type electromagnetic brake control device and method which are free from vibration noise and frequent switching when reducing average current which flows through a brake coil in a holding state of a non-excited operation type electromagnetic brake are provided. An acute triangle voltage wave generation unit generates a stepped acute triangle voltage wave which is formed by valley parts with a first angle and peak parts with a second angle smaller than the first angle arranged alternatively. A comparative voltage wave generation unit generates a comparative voltage wave based on current which flows through the brake coil. A comparison unit compares the acute the triangle voltage wave with the comparative voltage wave when the non-excited operation type electromagnetic brake is in the holding state. A switch performs switching to supply current to the brake coil when the acute triangle voltage wave is larger than the comparative voltage wave and to cut off the supply of current to the brake coil when the actute triangle voltage wave is not larger than the comparative voltage wave. | 10-25-2012 |
20120314332 | Current Sensor - There is provided a voltage or current sensing device. An exemplary voltage or current sensing device includes a drive circuitry configured to deliver a drive current to a magnetic core operably coupled with a conductor, for driving the core to cyclical magnetic saturation. The device also includes sense circuitry configured to receive a voltage signal corresponding to an application current in the conductor. The device also includes signal processing circuitry configured to sample the voltage signal, wherein a first sample is in phase with the drive current and a second sample is out of phase with the drive current. The device also includes a feedback loop configured to deliver a compensation current to the magnetic core, wherein the compensation current is configured to balance the magnetic core and wherein the compensation current is based at least in part on the first sample in phase with the drive current. | 12-13-2012 |
20140071576 | Highly Precise And Low Level Signal-Generating Drivers, Systems, And Methods Of Use - Apparatus and method for providing and using a highly precise and low level driver. In one described embodiment, a driver for a magnetic field generating device is provided, the driver including a first digital to analog converter and a second digital to analog converter; a differential amplifier configured to receive a first signal from the first digital to analog converter and receive a second signal from the second digital to analog converter and output a third signal; and an attenuator to configured to receive the third signal from the differential amplifier. | 03-13-2014 |
20140085765 | MAGNETORHEOLOGICAL DEVICES AND ASSOCIATED METHODS OF CONTROL - Embodiments of magnetorheological systems, devices, and associated methods of control are described below are described herein. In one embodiment, a magnetorheological device includes an magnetorheological fluid, a shaft proximate and mechanically coupled to the magnetorheological fluid, and a magnetic field generator configured to generate a magnetic flux through the magnetorheological fluid along a magnetic flux path. The magnetorheological device also includes a sensor positioned in the magnetic flux path and configured to measure a current value of magnetic inductance of the magnetic flux flowing through the magnetorheological fluid. | 03-27-2014 |
20140092515 | ELECTROMAGNETIC COIL DRIVE DEVICE - An electromagnetic coil drive device has a semiconductor switch connected in series with an electromagnetic coil for controlling a current supplied to the coil; a capacitor; a comparator for comparing a voltage to charge and discharge the capacitor with two different voltages, for generating a signal to operate on-off of the semiconductor switch in accordance with a result of a comparison; a first charging circuit to charge the capacitor based on a voltage applied to the coil; and a discharging circuit to discharge the capacitor. The first charging circuit has a first resistor and at least one compensating circuit connected in parallel with the first resistor; and a resistor and a Zener diode are connected in series in the compensating circuit. | 04-03-2014 |
20140211360 | SYSTEM AND METHOD FOR PRODUCING MAGNETIC STRUCTURES - A magnetizer for magnetizing magnetic field sources into a magnetizable material includes a magnetization subsystem, a motion control system, and a magnetizer control system. The magnetization subsystem includes a magnetizing inductor comprising a plurality of flat conductor layers and a plurality of insulating layers that form multiple turns of a coil having an aperture and a magnetization circuitry for applying a current to the magnetizing inductor to generate a magnetizing field having a high magnetic flux density in and near said aperture that is sufficient to magnetize said magnetizable material and having a low magnetic flux density elsewhere that is insufficient to substantially magnetize said magnetizable material. The motion control system moves at least one of the magnetizable material or the magnetizing inductor to position the aperture of the magnetizing inductor adjacent to one or more locations at a surface of the magnetizable material where the one or more magnetic field sources are magnetized into the magnetizable material. The one or more magnetic field sources have a first polarity exposed at the surface of the magnetizable material and a second polarity not exposed at the surface of the magnetizable material. | 07-31-2014 |
20140355165 | CONTROL UNIT FOR CIRCUIT BREAKER AND CONTROLLING METHOD THEREOF - Disclosed are a control unit for a circuit breaker capable of controlling and monitoring various types of switches such as a circuit breaker and a switchgear included in power system equipment, by being attached to the switches or by being implemented in the form of an independent module, and a controlling method thereof. The control unit for a circuit breaker, which interworks with a relay and a circuit breaker, includes: an Ethernet drive configured to receive a GOOSE message type control signal from the relay connected thereto through Ethernet communication; a control module configured to operate the circuit breaker based on the GOOSE message type control signal; and a main control unit (MCU) module configured to transmit the GOOSE message type control signal to the control module, if the received GOOSE message type control signal is related to the control unit. | 12-04-2014 |
20150029635 | LOW COST ELECTRICAL STAMP - A low cost electrical stamp is provided in the present invention. The low cost electrical stamp includes a magnetic cylinder matrix, a print circuit board (PCB), a control circuit and an interface circuit. The magnetic cylinder matrix includes a plurality of magnetic cylinders. The PCB includes a plurality of electromagnets whose positions are corresponding to the positions of the magnetic cylinders. The control circuit is coupled to the electromagnets of the PCB to control the magnetic field direction of the electromagnets. The interface circuit is coupled to the control circuit to couple to a computing device. When the low cost electrical stamp is coupled to the computing device through the interface circuit, the computing device programs the control circuit by a diagram. The control circuit magnetizes the electromagnets to change the positions of the magnetic cylinders according to the diagram. | 01-29-2015 |
20150116887 | METHOD AND APPARATUS FOR PRODUCING AN ASYMMETRIC MAGNETIC FIELD - A system for generating an asymmetric magnetic field. The system includes a drive circuit and a stacked winding structure coupled to the drive circuit. The stacked winding structure includes a plurality of winding layers. The plurality of winding layers includes a first winding layer including a first conductive winding having first turns and a second winding layer including a second conductive winding having second turns ion. The plurality of winding layers is arranged to produce a first magnetic field at a first side of the stacked winding structure and a second magnetic field at a second side of the stacked winding structure when the drive circuit electrically drives the plurality of winding layers. The first magnetic field is greater than the second magnetic field. | 04-30-2015 |
20160071642 | Electromagnetic Coil Driving Control Device - The present invention is to provide a magnet coil drive control device that can efficiently suppress conduction noise while reducing the capacitance of a capacitor. A capacitor and an impedance element are arranged in series on the connecting line connecting the positive electrode line and the negative electrode line of a DC power supply, the connecting line between the capacitor and the impedance element is connected to one end of a magnet coil via a freewheeling diode, and the portion between the freewheeling diode and the one end of the magnet coil is connected to the positive electrode line or the negative electrode line by a switching element. Conduction noise caused by the driving current of the magnet coil can be suppressed by the impedance element, and the capacitance of the capacitor can be further reduced. Accordingly, the magnet coil drive control device can be made smaller in size. | 03-10-2016 |
20160099095 | RELEASABLE MAGNETIC DEVICE - A magnetic device is described for releasably connecting a pair of assemblies; the device may serve as a mechanical connection or as an electrical connection, or both. The device comprises an inner core of high permeability material, a permanent magnet surrounding the inner core, and an outer excitation coil surrounding the permanent magnet. If the permeability of the high permeability material exceeds the permeability of the permanent magnet by a factor of at least 1,000, a manageable number of amp-turns in the excitation coil is capable of reversing the magnetic effect of the permanent magnet. The magnetic device can be miniaturized and provided in contact arrays suitable for coupling mobile devices. | 04-07-2016 |
20160111237 | METHOD FOR DRIVING AN INDUCTIVE ACTUATOR - A method for driving an inductive actuator having an actuating element and an actuator coil, includes initially acting on the actuator coil with a voltage having a first value in order to move the actuating element counter to a spring force and acting on the actuator coil with a voltage having a greater, second value at the beginning of the movement of the actuating element. The second voltage value is selected in dependence on how quickly the actuating element is intended to be moved. | 04-21-2016 |
20160196910 | METHOD AND DEVICE FOR COMPENSATION OF TEMPORAL MAGNETIC FIELD FLUCTUATIONS IN POWERED MAGNETS | 07-07-2016 |
20160203900 | AN ELECTRICAL RELAY DRIVE ARRANGEMENT FOR ENERGISING AND DE-ENERGISING THE ELECTRICAL COIL OF AN ELECTRO-MECHANICAL RELAY | 07-14-2016 |
361153000 | Pulse initiated | 5 |
20080316671 | Piezoelectric actuator driving device and method - A driving device for a piezoelectric actuator supplies charges and discharges the piezoelectric actuator through a charging switch and a discharging switch, respectively. The charging switch is repeatedly turned on and off thereby to charge and expand the piezoelectric actuator. The discharging switch is repeatedly turned on and off thereby to discharge and contract the piezoelectric actuator. The discharging switch is kept ON especially during a period from when the discharging switching control is terminated to when the charging switching control is started next. Thus, the piezoelectric voltage at the start of the next driving can be made substantially 0V. | 12-25-2008 |
20090027823 | Electromagnetic actuator with at least two windings - An electromagnetic actuator comprises a yoke, a core, at least two windings and switching means of the windings from a series position to a parallel position and vice-versa. It comprises control means comprising regulating means of the electric current flowing in the windings. The control means comprise inrush means controlling the voltage supplied to the windings during a closing operation, and controlling the switching means to place the windings in parallel mode. The control means also comprise holding means controlling the current supplied to the windings during a holding operation of the actuator in the closed position and controlling the switching means to place the windings in series mode. | 01-29-2009 |
20120206850 | ELECTROMECHANICAL DEVICE, MOVABLE BODY, ROBOT, METHOD OF MEASURING TEMPERATURE OF ELECTROMECHANICAL DEVICE - An electromechanical device includes a rotor, a stator having a magnetic coil, a sensor adapted to detect an electric angle of the rotor, a control section adapted to perform a PWM drive on the magnetic coil based on a signal from the sensor, a resistor connected in series to the magnetic coil when measuring temperature of the electromechanical device, and a voltage measurement section adapted to measure a voltage between both ends of the resistor, and the control section calculates an electric resistance of the magnetic coil using the voltage between the both ends of the resistor measured by the voltage measurement section, and then determines the temperature of the magnetic coil using the electric resistance of the magnetic coil in a measurement period in which application of a drive voltage to the magnetic coil is stopped in the PWM drive. | 08-16-2012 |
20140254058 | CURRENT CONTROL DEVICE FOR SOLENOID, STORAGE MEDIUM STORING PROGRAM FOR CONTROLLING CURRENT OF SOLENOID, AND METHOD FOR CONTROLLING CURRENT OF SOLENOID - A current control device sets a target current value of a solenoid, and sets a duty ratio of a PWM signal outputted to a drive circuit of a solenoid based on the target current value. The target current value is a value that periodically varies in a dither period longer than a PWM period of the PWM signal. A setting period of the target current value and a setting period of the duty ratio are shorter than the dither period. As compared with a configuration where the duty ratio is set in the dither period, a time period from a time a basic current value is changed to a time the duty ratio is renewed is shortened. A operation responsiveness of a movable core of the solenoid improves. | 09-11-2014 |
20150146337 | ELECTRICAL CONTACTOR - An electrical contactor for switching a load current having an AC waveform, has a fixed electrical contact, a movable electrical contact, an actuator arrangement having a drive coil drivable for opening and closing the movable and fixed electrical contacts, and a power supply having a controller for outputting truncated-waveform drive pulses to the electrical actuator arrangement, so as to prevent contact separation prior to peak load current. | 05-28-2015 |
361154000 | Including means to establish plural distinct current levels (e.g., high, low) | 10 |
20080212252 | Driving Method Of Electromagnetic Valve, Electromagnetic Valve Driving Unit And Apparatus For Coloring Electric Wire - A coloring apparatus | 09-04-2008 |
20090021882 | Solenoid Controls, Systems, and Methods of Use for Obtaining Optimum Battery Life - The present disclosure is directed to systems and methods for controlling energy consumption in a system having a battery and including a controller and one or more solenoids. In accordance with the disclosure, the controller provides a controlling mechanism, such as a control algorithm, that will provide the necessary power to operate the one or more solenoids throughout the range of battery voltage in a manner that optimizes the voltage discharge from the battery and simultaneously maximizes battery life. Further power conservation measures are implemented by using a controller and an associated control algorithm to operate a solenoid throughout the range of battery voltage in a manner that places the discharge of the battery in reduced power consumption operating modes as the capacity of the battery is reduced. | 01-22-2009 |
20090213520 | MEDICAL FLUID MACHINE HAVING SOLENOID CONTROL SYSTEM WITH REDUCED HOLD CURRENT - An electromechanical solenoid control system with reduced hold current includes an electromechanical solenoid including an armature and a coil; a voltage source; a resistor placed in an electrical line between the voltage source and the solenoid coil; a switching device configured to selectively apply power from the voltage source to the solenoid coil; and a control element connected electrically to the switching device, the control element operable to receive a signal from the electrical line and use the signal to control the switching device to selectively apply power from the voltage source to the solenoid coil. | 08-27-2009 |
20090244801 | Operative control circuit of multiple electromagnetic actuating devices in series and parallel connection - An operative control circuit of multiple electromagnetic actuating devices in series and parallel connections, wherein individually installed driving coils of two or more than two electromagnetic actuating devices being operatively controlled by a switching device to appear lower impedance in parallel connection or series and parallel connection for electrification thereby producing a larger electromagnetic actuating power is switched to appear relatively higher impedance in series connection or series and parallel connection thereby reducing currents passing through driving coils while required operating characteristics for individual electromagnetic actuating devices after electrification are still satisfied. | 10-01-2009 |
20090262479 | Electromagnetic actuating device being actuated by high voltage and held electrification by low voltage - The present invention is disclosed by that the power source device with variable output voltage is operatively controlled by the switching device to provide higher voltage power to the driving coil installed in the electromagnetic actuating device so as to produce larger electromagnetic effective force, wherein the power source device with variable output voltage after actuation is operatively controlled by the switching device to be switched to provide lower voltage power thus allowing smaller current to pass through the driving coil thereby holding electrification for excitation, while required operating characteristics of the electromagnetic actuating device can still be ensured. | 10-22-2009 |
20090262480 | Electromagnetic actuating device with coils capable of holding electrification in series connection after being actuated in parallel connection - At least two sets of driving coils of the same individual electromagnetic actuating device of the present invention in parallel connection or series-parallel connection to appear relatively lower impedance being electrified to obtain larger actuating force is further manipulated by the switching device to be switched to series connection and series-parallel connection to appear relatively higher impedance thus reducing currents passing through driving coils, while required operating characteristics of the electromagnetic actuating device can still be satisfied. | 10-22-2009 |
20090323246 | METHOD, DEVICE, INJECTOR AND CONTROL UNIT FOR TRIGGERING AN INJECTOR - A method and a device for triggering an injector are described, allowing expansion of the metering range of the injector. The injector is triggered by a trigger voltage that is adjusted according to a predefined voltage for opening the injector, the trigger voltage being first increased to open the injector, starting from the predefined voltage, and then reduced after a predefined time. The predefined time is selected in such a way that the energy stored in an energy accumulator mechanism of the injector has reached a steady-state energy level after the predefined time. | 12-31-2009 |
20110292558 | DRIVING CIRCUIT FOR AC CONTACTOR - Disclosed is driving circuit for AC contactor for driving a AC contactor, including a first switch connected in series with a winding of the AC contactor, a first diode reversely connected in parallel with the winding of the AC contactor for providing a discharging path for the winding, a DC startup holding unit having an output terminal connected in series with the first switch and a detection terminal connected to a first contact switch of the AC contactor. The DC startup holding unit is configured to selectively convert a DC driving voltage into a first DC voltage or a second DC voltage. When the AC contactor is not magnetized, the DC startup holding unit outputs the first DC voltage. When the AC contactor is magnetized, the DC startup holding unit outputs the second DC voltage. | 12-01-2011 |
20120014031 | SOLENOID CONTROLS, SYSTEMS, AND METHODS OF USE FOR OBTAINING OPTIMUM BATTERY LIFE - The present disclosure is directed to systems and methods for controlling energy consumption in a system having a battery and including a controller and one or more solenoids. In accordance with the disclosure, the controller provides a controlling mechanism, such as a control algorithm, that will provide the necessary power to operate the one or more solenoids throughout the range of battery voltage in a manner that optimizes the voltage discharge from the battery and simultaneously maximizes battery life. Further power conservation measures are implemented by using a controller and an associated control algorithm to operate a solenoid throughout the range of battery voltage in a manner that places the discharge of the battery in reduced power consumption operating modes as the capacity of the battery is reduced. | 01-19-2012 |
20140247532 | MAGNETIC EXCITATION CIRCUIT FOR ELECTROMAGNETIC FLOW METER - A magnetic excitation circuit is used as a circuit for providing a magnetic excitation electric current based on a magnetic excitation power supply voltage to a magnetic excitation coil of an electromagnetic flow meter. The magnetic excitation circuit includes four voltage storing circuits that store and output a driving voltage that is charged by a common driving voltage. The voltage storing circuits are connected respectively between the control terminals and the output terminals of four switching elements. When the four switching elements are turned ON in relation to a positive interval or a negative interval, the four switching elements operate by the driving voltages that are outputted from the respective voltage storing circuits. | 09-04-2014 |
361156000 | With capacitor charging or discharging through coil | 3 |
20090316323 | CIRCUIT ARRANGEMENT WITH A RELAY INCORPORATING ONE FIELD COIL AS WELL AS SWITCH CONTACTS - The invention is directed to a circuit array with a relay (K | 12-24-2009 |
20100008009 | BISTABLE ELECTROMAGNETIC ACTUATOR, CONTROL CIRCUIT OF AN ELECTROMAGNETIC ACTUATOR WITH DOUBLE COIL AND ELECTROMAGNETIC ACTUATOR WITH DOUBLE COIL COMPRISING ONE SUCH CONTROL CIRCUIT - A bistable electromagnetic actuator comprising a magnetic circuit comprising a magnetic yoke in which a shunt extends perpendicularly to a longitudinal axis of said yoke and comprising a permanent magnet positioned between a first surface of the yoke and the shunt. A plunger core is fitted with axial sliding between a latched position and an unlatched position. A coil extending between the shunt and a second surface of the yoke is designed to generate a first magnetic control flux to move the plunger core from an unlatched position to a latched position. A second magnetic control flux enables the plunger core to move from the latched position to the unlatched position by the action of a return spring. | 01-14-2010 |
20110149457 | ELECTRONIC TRIGGERING UNIT FOR AN ELECTROMAGNETICALLY ACTUATED VALVE FOR OPERATING A HYDROSTATIC DISPLACEMENT UNIT - An electronic triggering unit for an electromagnetically actuated valve is disclosed, in which the valve is provided in particular for a hydrostatic displacement unit. The electronic triggering unit has a first switching device, which during the attraction phase of the valve applies a first voltage to its coil, which voltage is higher than the operating voltage of the electronic triggering unit. This first voltage is obtained from the operating voltage by means of a voltage-increasing circuit. A second switching device, during the maintenance phase of the valve, applies a second voltage, which corresponds approximately to the operating voltage, to its coil. According to the invention, the voltage-increasing circuit is a booster circuit, which in response to a corresponding trigger signal charges a buffer memory to the increased first voltage. | 06-23-2011 |