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Match Document Document Title
7423857 Current detecting circuit and actuator driving apparatus  
By switching the NMOS ( 11 ) on and off, a drive current passes through a solenoid ( 15 ). The drive current passes through a conversion circuit ( 16 ), and an amplifier circuit ( 17 ) outputs a...
7405917 Method and apparatus for monitoring and determining the functional status of an electromagnetic valve  
The present invention provides a method and apparatus for determining the functional status of an electromagnetic valve having a solenoid and plunger including determining the electro-mechanical...
7403366 Control circuit for an electromagnetic drive  
A control circuit for an electromagnetic drive includes first and second electronic switching elements, which in conjunction with a timing element subject the drive coil to a corresponding direct...
7401595 Fuel injection device for internal combustion engine  
A fuel injection device for an internal combustion engine including: an injector that injects fuel to be supplied to the internal combustion engine; a battery to which a DC converter that charges a...
7389968 Proportional solenoid valve control device  
In a proportional solenoid valve control device, a mode selecting switch has an auto-mode position for sending a control signal from a level converting section to a driving signal amplifying...
7359175 Relay drive circuit  
A potential of an end of the coil is inputted to a plate-OFF detecting portion which detects OFF-tendency in which a plate of a relay is about to get apart from a head of a core of the relay. When...
7349192 Method of operating a device for controlling electric actuators with optimum actuation current distribution  
There is described a method of operating a device ( 1 ) controlling electric actuators ( 3 ), and having a pair of input terminals ( 4, 5 ) connected to an electric energy source ( 6, 10 ); a...
7336470 Solenoid drive apparatus and drive method  
A solenoid ( 30 ) has one end connected to the ground G and the other end connected to an N-MOS transistor ( 33 ) which applies current from a battery ( 31 ) to the solenoid ( 30 ). On the other...
7307397 Driving unit  
A driving unit of the present invention comprises a moving element, an elastic body configured to support the moving element, a permanent magnet fixed on said moving element, an electromagnet...
7262950 Relay device having holding current stabilizing and limiting circuit  
A relay device includes plural relay units, each having a coil for opening/closing a contact point, a base plate made of resin and having wiring metal pieces, and a control circuit mounted on the...
7258106 Control system for internal combustion engine  
A control system for an internal combustion engine having fuel injection valves provided in a combustion chamber and an exhaust gas recirculation mechanism. Target maximum cylinder pressure change...
7248453 Circuit and method for controlling current flow through a solenoid  
A solenoid control circuit that includes two switching networks that are selectively opened and closed in a current limit cycle to control the magnitude of the current flowing through the solenoid....
7246600 Control device for internal combustion engine  
An ECU executes a program including the steps of: calculating a base timing of injection (INJB); determining whether an engine knocks; if the engine knocks, increasing a correction value INJK(I)...
7242567 Actuator drive controller  
An actuator drive controller is equipped with a power source for supplying power to an actuator; a voltage detector for detecting a voltage of the power source; and a controller for controlling a...
7235936 Linear vibration motor  
A linear vibration motor comprises: a stator provided with one of a permanent magnet and an electromagnet including a winding; a vibrator provided with the other of the permanent magnet and the...
7233478 Method and apparatus for protecting a solenoid and its driving circuit in an electronic device  
A circuit for protecting a solenoid and/or receipt printer in an electronic device, such as a point-of-sale terminal, includes a resistance and a capacitance. The resistance is electrically coupled...
7233476 Actuator thermal protection in haptic feedback devices  
Method and apparatus for providing thermal protection for actuators used in haptic feedback interface devices. An average energy in the actuator over a predetermined period of time is determined,...
7209338 Active vibration insulator  
An active vibration insulator includes an electromagnetic actuator, a cyclic-control-signals output device, and an electromagnetic-actuator driver. The electromagnetic-actuator driver includes an...
7206180 Method for regulating the current through an electromagnetic actuator  
A method for regulating the current through an electromagnetic actuator. The actuator, a first switch and a current-measuring circuit form a series circuit. A free-wheeling diode is...
7158361 Method and apparatus for regulating a current through an inductive load  
The invention relates to a method and an apparatus for regulating a current through an inductive load, which can be connected to a power supply, to a prescribed nominal current value, where the...
7131429 Method for controlling an injection valve of an internal combustion engine  
A method for controlling an injection valve of an internal combustion engine, in particular a piezo-injector during the start-up phase of the internal combustion engine, in particular a common-rail...
7131428 Method for controlling fuel injection in an internal-combustion engine  
A method is provided for controlling fuel injection in an internal-combustion engine provided with an electroinjector, including an electroactuator, an injection nozzle, and a pin, which is movable...
7126295 Stopping noise reduction circuit for start motor using resistor  
A stopping noise reduction circuit for a start motor comprises a battery generating a power supply to drive the start motor, a key switch for controlling an on/off of the power supply, a solenoid...
7124742 Supplemental fuel injector trigger circuit  
A Supplemental Fuel Injector Control Circuit includes a resistor adapted to connected between a voltage output port and an injector control port of an Engine Control Unit. The circuit also includes...
7124741 Method for controlling an injector with verification that plunger movement has occurred  
A method for controlling an injector with verification that plunger movement has occurred; the method providing application of a time-variable voltage to the terminals of an injector drive circuit...
7116542 Micro-switches for downhole use  
A downhole tool includes a device to be activated by electrical energy and a micro-switch that includes conductors and an element between the first and second conductors selected from the group...
7116541 Method and apparatus for reducing the switching noise of an electromagnetic switching device  
In order to achieve a reduction in the switching noise during operation of an electromagnetic switching device with little complexity, a coil for moving an armature with moving switching contacts...
7107976 Inductive load powering arrangement  
An inductive load powering arrangement ( 20 ) utilizes current monitoring on only one side of the load ( 22 ) which in one example is a fuel injector coil. In disclosed examples, a high side driver...
7099136 State space control of solenoids  
A system and method for state space control of solenoids, particularly engine valve solenoids with two latching positions. A collection of trajectories are computed or measured, having low-impact...
7095599 Fuel injector and its control method  
When voltage changes occur in the battery used as a power supply in a fuel injection system, the amount of fuel injection also changes and the required amount of fuel injected cannot be obtained....
7089915 Method and device for controlling an electromagnetic consumer  
A device and a method are described for controlling an electromagnetic user, especially a magnetic valve for influencing the fuel quantity to be injected into an internal combustion engine. At...
7073524 Fail safe drive for control of multiple solenoid coils  
A fail-safe apparatus for controlling fluid flow through a series arrangement of first and second solenoid-controlled valves is provided. The fail-safe apparatus includes fail-safe circuitry for...
7072164 Electric parts drive circuit  
An electric parts drive circuit has: a first field-effect transistor including in parallel a first parasitic diode and provided between the plus line and an electric part; a second field-effect...
7054128 Control apparatus for electromagnetically driven valve and control method of the same  
A control apparatus for an electromagnetically driven valve is provided which is applied to an electromagnetically driven valve in which a movable portion including an armature and a valve element...
7042692 Electromagnetic apparatus drive apparatus  
Conventionally, a non-conductive period is provided in a region in the vicinity of zero of an AC power voltage via a voltage detection circuit 14 to turn off reliably. The FET 17 maintains the...
7021072 Current control loop for actuator and method  
Systems and methods for providing a current control loop for an actuator. A typical system includes a current command controller setting a command current, the current command controller being...
7004128 Control apparatus for device having dead band, and variable valve system  
A control unit employed in a variable valve timing apparatus vibrates a control signal for controlling an oil-pressure control valve. If the vibration center of the duty value of the control signal...
7000599 Supplemental fuel injector trigger circuit  
A Supplemental Fuel Injector Control Circuit includes a resistor adapted to connected between a voltage output port and an injector control port of an Engine Control Unit. The circuit also includes...
6924965 Electro magnetically-operated device, and a method of operating the same  
An electromagnetically operated device has an electromagnet including a magnetic guide having a movable armature and at least one air gap, a magnetizing coil provided on the magnetic guide, the...
6923161 Fuel injection timer and current regulator  
A fuel injector control system and method provides precise fuel injection timing while eliminating the need for a voltage regulator by estimating or predicting ramp times between voltage...
6909427 Load adaptive column driver  
A column driver system and method for driving a plurality of column drivers in an active matrix display. The system comprises: a register in each column driver for holding a pixel value; a system...
6879480 Brake transmission shift interlock and park lock system  
A Brake Transmission Shift Interlock and Park Lock System having a shift lever, electromagnetic device, and blocking member operating with reverse logic. The system includes disabling means for...
6865064 Drive apparatus and drive method for electromagnetic drive actuator  
A drive apparatus for an electromagnetic drive type actuator, which includes a movable element, a fixed element, a connection element, a magnetic field generation element, and a drive coil, such...
6853530 Apparatus and method for actuating a mechanical device  
An integrated module encased in protective housing is electrically and mechanically connected to a solenoid, which remotely actuates an Automatic Transfer Switch (ATS) or lighting contactor. The...
6850402 Circuit and method for controlling current flow through a solenoid  
A solenoid control circuit that includes two switching networks that are selectively opened and closed in a current limit cycle to control the magnitude of the current flowing through the solenoid....
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...
6845300 Control methods for electromagnetic valve actuators  
An electromagnetically operated valve assembly ( 28 ) has a first solenoid ( 58 ) and a second solenoid ( 60 ). An armature ( 56 ) having a valve stem ( 54 ) coupled thereto is positioned between...
6845001 Electromagnetic contactor  
In an electromagnetic contactor 100 for passing a current through an electromagnet 301 from a power source 402 and moving a movable core 1 from a first position in which a gap to a fixed...
6839216 Solenoid driving device  
To reduce the number of signal lines for connecting an current detector and a solenoid electrically. Between solenoids 1-1 and 1-2 and switches SW- 1 and SW- 2 and on the high sides with...
6832601 Control device of fuel injection valve  
A control device of a fuel injection valve is capable of performing a stable fuel injection even if voltage variation takes place in battery, and performing evacuation operation against error in...
Matches 1 - 50 out of 419 1 2 3 4 5 6 7 8 9 >