|
Match
|
Document |
Document Title |
|
|
7621259 |
Internal combustion engine controller
In a voltage boost circuit for driving a fuel injector of an internal combustion engine, a high voltage developed in the voltage boost coil will be discharged into the battery power supply through...
|
|
|
7612977 |
Electrical supply circuit, switch activating apparatus and method for operating a switch activating apparatus
An electric supply circuit is provided for a switch actuating device containing an actuator, an electromagnetic drive for displacing the actuator from a first switching position to a second...
|
|
|
7605352 |
Method for sorting positive temperature coefficient (PTC) elements
In a method for sorting PTC elements having different resistance-temperature characteristics, a predetermined voltage that allows a current to sufficiently decay is applied to each of PTC elements...
|
|
|
7589940 |
Voltage boosting circuit and electricity-driven power steering device
A switching device of a chopper circuit is interrupted from a switching circuit when the switching device has a breakdown, whereby power source input is directly output without being boosted by...
|
|
|
7561386 |
Switch monitoring circuit
A switch monitoring circuit includes a switch arranged to be turned ON/OFF in response to an operation, a capacitor connected to both ends of the switch, a voltage applying unit that applies a...
|
|
|
7463473 |
Resonance field discharge
A field discharge circuit may rapidly reduce the field current of a generator, thereby avoiding an overvoltage condition. The field discharge circuit of the present invention may use another...
|
|
|
7369391 |
Drive circuit of direct-current voltage-driven magnetic contactor and power converter
In a direct-current voltage-driven magnetic contactor, a main contact is in an open circuit condition in an attraction period of an initial period of excitation by an operating coil, and in a...
|
|
|
7349193 |
Solenoid driver with high-voltage boost and reverse current capability
Prior to the operation of a solenoid type of fuel injector, a DC voltage is applied across the injector to create a current through the injector that is below the activation current of the...
|
|
|
7203609 |
Magnetic field generating apparatus and magnetic field controlling method
When a sine wave is supplied from a sine wave oscillator through a resonant capacitor selection circuit, an alternating electric and magnetic field is generated on a loop coil. A magnetic intensity...
|
|
|
7051913 |
Safety control circuit for direct current electromotive nail driver
A safety control circuit for a direct current electromotive nail driver comprises: a direct current power source for supplying power to the circuit; a control and protecting unit having a security...
|
|
|
6917506 |
Control apparatus for master/slave outlets
A control apparatus for master/slave outlets having a current sensor, a driver, a large current switch component and a direct-bucking type power supply such that the working power source required...
|
|
|
6900973 |
Electromagnetic load drive apparatus
A drive apparatus supplies electric power to a solenoid of an inductive load from a battery and a capacitor to improve response of the load. The drive apparatus comprises switches for switching...
|
|
|
6850139 |
System for writing magnetic scales
The invention relates to a system for pulse magnetizing high-precision magnetic scales. The system comprises a shaped current conductor ( 1 ) and a pulse current source ( 2 ) that is composed of a...
|
|
|
6785111 |
Electric charge detector
Electrostatic discharge can damage electronic equipment. It has been known to start a fire when it occurs when a motor vehicle's gasoline tank is being filled. A device for detecting, alarming,...
|
|
|
6721158 |
Method for providing current by means of an inductive component
There is suggested a simple and cost-economical circuit arrangement for specifying the current through an inductive component, in which the inductive component is acted on by the supply voltage...
|
|
|
6714398 |
Bulk degausser with fixed arrays of magnetic poles configured for thick and small form factor, high coercivity media
A bulk degaussing apparatus and method for erasing magnetic media of various sizes. A media passage track is provided such that media passing therethrough is uniformly exposed to the magnetic...
|
|
|
6639781 |
Electromagnetic dent remover power supply
A power supply for an electromagnetic force system comprising a slow current pulse system in parallel with a dumping circuit feeding a blocking inductor in parallel with a series of diodes; a fast...
|
|
|
6587325 |
Equipment load safety circuit
A safety circuit according to the invention controls operation of an equipment load. A manual control switch of the safety circuit is connected in series with the equipment load for controlling the...
|
|
|
6504699 |
Method and device for driving a solenoid valve
A method and a device are proposed for driving a solenoid valve that has stroke ranges of a stable equilibrium of forces and stroke ranges of an unstable equilibrium of forces. For setting the...
|
|
|
6407593 |
Electromagnetic load control apparatus having variable drive-starting energy supply
In an electromagnetic injector control apparatus for an engine, a capacitor is connected to a power supply and a solenoid of an injector for accumulating electric charge at a voltage higher than...
|
|
|
6360725 |
Method and device for controlling an electro-magnetic load
A method and device for driving at least one electromagnetic load, in particular a solenoid valve, for controlling an injection of fuel into an internal combustion engine, using a drive circuit...
|
|
|
6236554 |
Electroactuator control device and method for controlling this control device
The control device comprises a piloting circuit for the electroactuators and a timing circuit which generates timing signals supplied to the piloting circuit for control of the electroactuators....
|
|
|
6166896 |
Method of increasing the cast-off speed of the armature in an electromagnetic actuator
A method of increasing a cast-off speed of an armature from a pole of an electromagnet of an electromagnetic actuator, includes the following steps: holding the armature at the pole against a force...
|
|
|
6142124 |
Method and device for controlling a load
A method and a device for controlling a load, in particular a solenoid valve for controlling the quantity of fuel to be injected. The load receives a bias current value before being activated. This...
|
|
|
6123058 |
Injector drive circuit
An injector drive circuit capable of driving an injector of an internal combustion engine without using a DC-DC converter expensive. The injector drive circuit includes a power circuit for...
|
|
|
6123092 |
Electromagnetic solenoid valve drive circuit
A circuit for driving an electromagnetic solenoid valve, used as a fuel injector in an internal combustion engine, having a needle valve biased in a closing direction by a spring and a solenoid...
|
|
|
6061226 |
Relay circuit with cyclical controlled capacitor
There is proposed a circuit for operation of at least one relay having an OFF-position and an ON-position, wherein the relay assumes the OFF-position in the event of a component failure of any...
|
|
|
6021038 |
Control circuit for an electric door strike using a latching solenoid
A control circuit for a latching solenoid incorporated in an electric door strike, the latching solenoid permitting the use of low power control pulses and the control circuit insuring reliable...
|
|
|
5938172 |
Solenoid valve drive system
A solenoid valve drive system includes a step-up circuit that produces a first high voltage by using a switching device to on/off control supply of current from a battery to a step-up coil and...
|
|
|
5940262 |
Control circuit for an electromagnetic device for controlling an electromagnetic fuel control valve
A control circuit for an electromagnetically operable fuel control valve of a vehicle engine includes a tank capacitor which upon closure of first and second controllable switches supplies current...
|
|
|
5936827 |
Device for controlling at least one electromagnetic load
A device for controlling at least one electromagnetic load, which includes a first switching device arranged between a first terminal of a supply voltage and a first terminal of at least one load,...
|
|
|
5907465 |
Circuit for energizing EAS marker deactivation device with DC pulses of alternating polarity
A device for deactivating magnetomechanical EAS markers includes a storage capacitor and a coil for generating a deactivation field. A bridge arrangement of four switches interconnects the coil...
|
|
|
5889645 |
Energy preservation and transfer mechanism
An arrangement for driving actuator coils for two or more driven devices employs a microprocessor or similar controller and an actuator driver circuit. The actuator driver circuit controls two or...
|
|
|
5877931 |
Device for controlling inductive loads, in particular of injectors of an internal combustion engine injection system
The control device has a drive circuit, in turn having a number of modular circuits--one for each inductor--activated selectively and receiving timing signals, and a common circuit connected to the...
|
|
|
5796223 |
Method and apparatus for high-speed driving of electromagnetic load
An apparatus for driving an electromagnetic load by applying a high voltage at the initial driving stage and thereafter applying a constant hold current is provided with a switch for supplying...
|
|
|
5781111 |
Apparatus for deactivation of electronic article surveillance tags
In accordance with the present invention there is provided an apparatus for deactivating electronic article surveillance tags comprising a deactivation coil, a capacitor, charging means for...
|
|
|
5717562 |
Solenoid injector driver circuit
A solenoid driver circuit is controlled by an electronic control module ("ECM") and eliminates many components required for a high voltage power supply required by the prior art. The solenoid...
|
|
|
5652691 |
Electrically operated control device and system for an appliance and method of operating the same
An electrically operated control device and system for an appliance and method of operating the same are provided, the system comprising a power source of alternating electrical current that has a...
|
|
|
5633779 |
Relay control circuit and method for controlling a relay
A control relay circuit and method for controlling a relay having a coil, for use, in particular, in operation of a light fixture circuit having an HID lamp. The relay control circuit has an input...
|
|
|
5631801 |
Fast relay control circuit with reduced bounce and low power consumption
A relay control circuit and method for closing a contact in response to an input signal received at a starting time. According to a preferred embodiment of the invention, a rapidly increasing...
|
|
|
5612848 |
Control device and methods of making and operating the same
A control device and methods of making and operating the same are provided, the control device comprising a microcomputer unit, a relay unit having a coil and contacts that are operated to one...
|
|
|
5523632 |
Method and device to recover energy from driving inductive loads
A circuit device for recovering energy from an inductive load is connected to a protection circuit for protecting a driver circuit from a charge contained in the inductive load. The inductive load...
|
|
|
5413423 |
Print element drive control with constant current charge and discharge of capacitor
A dot matrix printer having a print head having a plurality of print solenoids. The print head is carried on a print head carriage driven by a carriage drive arrangement. A print timing means...
|
|
|
5402303 |
Remotely-powdered and remotely-addressed zero-standby-current energy-accumulating high-power solenoid drivers, particularly for systems that are micropowered
One or more loads, commonly solenoids, requiring a high-power drive--typically 500 ma. 7.5 v.d.c.--are selectively actuated by energy that is accumulated over time--typically over several hundred...
|
|
|
5394291 |
Relay energizing circuit
A method of energizing a relay comprising the steps of applying an energization signal to the relay having a voltage in excess of a rated voltage of the relay and then allowing the energization...
|
|
|
5363270 |
Rapid response dual coil electromagnetic actuator with capacitor
An electromagnetic actuator having an integral capacitor and secondary coil for reducing opening and closing response times without the need for switching circuits. The secondary coil produces a...
|
|
|
5184855 |
Electromagnetic door lock assembly
An electromagnetic door lock assembly employs an electromagnet positioned in a frame adjacent to a door, power source for providing power to the electromagnet, and an adjustable armature assembly...
|
|
|
5168418 |
Double DC coil timing circuit
Control circuitry is disclosed for electrical starters, contactors and the like having a starting winding and a serially coupled holding winding wherein the holding winding is shorted until the...
|
|
|
5046345 |
Power supply for electromagnetic proof load tester and dent remover
A power supply for use with an electromagnetic force system used for dent removal or proof load testing, wherein the power supply includes slow and fast current pulse systems. The slow current...
|
|
|
4862866 |
Circuit for the piloting of inductive loads, particularly for operating the electro-injectors of a diesel-cycle internal combustion engine
A piloting circuit for inductive loads, particularly for operating the electro-injectors of a diesel engine, comprises an input for connection to a low tension supply, a storage coil for storing...
|