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7612978 |
Three wire drive/sense for dual solenoid
A dual-acting solenoid, consisting of one armature moving between two latching positions against two yokes with two drive windings, is interconnected to bring out three wire terminations: a center...
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7595971 |
Sensing armature motion in high-speed solenoids
The invention relates to a technique for discerning a status of an armature of a high-speed solenoid at any time during its operational cycle. In high speed solenoids, motion of an armature does...
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7593212 |
Relay drive matrix
A microprocessor-based control system is provided that comprises a plurality of latching relays, at least some of which may be connected in parallel. A momentary application of voltage of a first...
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7593211 |
Automatically configuring vacuum contactor
A controller for a vacuum contactor or the like measures barometric pressure and provides a short impedance characterizing pulse to the coils of the vacuum contactor coils to assess proper...
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7578481 |
Digital programmable driver for solenoid valves and associated method
A digital programmable driver for a solenoid valve comprises at least one valve driver circuit for opening and closing the valve and a controller capable of sending an output signal to the valve...
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7576958 |
Relay socket with leakage current suppression
A technique is provided for controlling an operator in a circuit such as a relay circuit. The operator may be a coil in an electromagnetic relay. The coil is energized only when current through a...
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7573694 |
Apparatus for and method of controlling operation of solenoid-operated valve
A control circuit turns a transistor on and off in order to energize a drive coil of a solenoid-operated valve in a rated voltage mode at a duty ratio of 100% during a predetermined first period,...
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7567050 |
Arrangement for operating an electrically adjustable item of furniture for sitting and/or lying upon
The invention relates to an arrangement for isolating supply current from control devices, which satisfies higher safety standards while, however, being easy to operate. To this end, the inventive...
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7564662 |
Overload protection system for an electromagnetic lift
A method for protecting against current overload conditions associated with an electromagnetic lift system comprises receiving current data from a current monitoring device associated with an...
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7542261 |
Device for driving and electromagnet, particularly for operating pumps
A device for driving an electromagnet, for operating pumps, including a primary winding and a moving element, power switching electronic means, a control logic unit to control the power switching...
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7522400 |
Method of detecting and correcting relay tack weld failures
A method of detecting and attempting to correct a relay tack weld failure of its contacts is presented. This method senses the failure of a relay's contacts to open once it has been commanded to...
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7522025 |
Switchgear with a switching device and an electronic component as well as a supplementary electrical circuit for the switchgear
A switchgear comprises a switching device, such as a relay, with a switching mechanism. A printed-circuit board that is provided with at least one electronic component is electrically connected to...
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7509931 |
Power electronics circuit for electromechanical valve actuator of an internal combustion engine
A dual coil half bridge converter adapted to be coupled to a dual coil actuator of a cylinder valve in an internal combustion engine is described. In one example, the converter has a first and...
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7502214 |
Flexible hook switch driver circuit
Disclosed is a switch driver circuit is shown where the circuit can control current driven devices and drive devices across a capacitive barrier. A mode control signal determines whether the...
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7492557 |
Switching device and electric apparatus
A switching device is provided that includes a switching mechanism unit and a switch drive control circuit. In the switching device, an operating member is maintained in an ON position by the...
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7483253 |
Systems and methods for detecting solenoid armature movement
A method for detecting actuation of an armature associated with a solenoid includes providing a voltage potential to a solenoid coil associated with the solenoid. The method also includes measuring...
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7443106 |
Circuit with switch-off device for the operation of light sources
Circuit with a switch-off device for the operation of light sources The invention relates to a circuit with a switch-off device for the operation of light sources (Lp), have the following...
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7436644 |
Switching circuit, switching method, protective device and battery pack
A solenoid type switch has at least two driving coils. The driving coils turn off a switch with a current for example an overcurrent that flows in the switch. The driving coils are magnetized or...
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7434457 |
Fluid property sensors
Micro-Electro Mechanical Systems (MEMS) based fluid sensors adapted to measure physical properties of oilfield reservoir fluids under downhole conditions. Certain embodiments of the invention may...
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7430102 |
Pulse width modulated servo clutch driver
Disclosed is a system and method for controlling a clutch associated with a solenoid using a pulse width modulated (PWM) signal, which keeps the current through the coil constant over a wide...
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7411771 |
Electric circuit arrangement for controlling a solenoid-operated fluid valve
An electric circuit arrangement for controlling a solenoid-operated fluid valve.
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7410310 |
Blade driving apparatus for cameras
A blade driving apparatus for cameras includes a base plate having an aperture for a photographing optical path; a cover plate having the aperture for the photographing optical path, provided with...
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7405918 |
Inductive load control
A method is provide for controlling an inductive load device (ILD). The method includes providing a voltage potential across ILD and disabling a flow of current through the ILD resulting from the...
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7405648 |
Remote control wiring mechanism
There is provided a remote control wiring mechanism, which makes it easy to construct a system by facilitating a connection work and treatment of members constructing the system. A main unit...
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7403368 |
Devices and methods for detecting operational failures of relays
An uninterruptible power supply (UPS) includes a power conversion circuit and a relay. The relay is configured to couple and decouple a power source to and from an input of the power conversion...
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7388735 |
Current inductive timer socket
A current inductive timer socket comprises: a principle relay circuit including an output relay and a voltage input terminal, a reed relay circuit including a capacitor, a plurality of diodes, a...
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7377480 |
Electrohydraulic valve servomechanism with adaptive resistance estimator
A servomechanism includes a controller which dynamically estimates the resistance of the solenoid coil in an electrohydraulic valve as part of determining a level of electric voltage to apply to...
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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...
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7367296 |
Bi-directional power electronics circuit for electromechanical valve actuator of an internal combustion engine
A bi-directional dual coil half bridge converter adapted to be coupled to a dual coil actuator of a cylinder valve in an internal combustion engine is described. In one example, the converter has a...
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7365955 |
Material processing machine
A material processing machine such as a wood chipping machine, a press, a cane cutting machine or other machine comprising an operating region having at least one processing element and an access...
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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...
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7348690 |
Preventing unsafe operation by monitoring switching means
An electronic control that monitors the switching means used to operate transducers to detect conditions that can cause improper transducer operation. In the application the unenergized state of...
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7342764 |
Electronic control systems and methods
An apparatus in an electronic control system allows two or three wire operation. A power supply can supply power to the enclosed circuitry in both two and three wire installations. Two separate...
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7342762 |
Resettable circuit protection apparatus
A circuit protection device includes a solid-state resettable switch, a first terminal in electrical communication with a first portion of the switch, the first terminal configured to be connected...
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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...
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7336469 |
Insert-molded product
A ground wire connection nut ( 14 A) and a cover-fixing nut ( 14 B) are molded in a case ( 12 ) at positions shifted in an axial direction thereof. Caps ( 17 ) are mounted on each nut ( 14 A, 14...
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7333308 |
Control arrangement
A control arrangement is operable to control an electrical relay to supply current. The arrangement comprises current supply means and control means operable to provide a relay make signal and a...
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7330344 |
Method for driving actuators
A method for driving a plurality of actuators having an output stage having multiple channels, by way of whose channels boost currents are conveyed to the actuators. In this method, a check is made...
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7306196 |
Electromagnetically driven valve
The electromagnet includes a valve-opening side coil portion supplied with a current to thereby generate a first magnetic flux and generate electromagnetic force in a direction moving the...
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7301749 |
Device and method for triggering an inductor
A device and method for triggering an inductor having a trigger circuit and a first and second extinguishing device, the trigger circuit triggering a switch element, which establishes or interrupts...
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7268994 |
Relay driving apparatus and method having relay contact turn-on holding function
A relay driving apparatus has a control circuit, which supplies a first voltage to a relay coil in response to a relay driving signal to turn on a relay contact, and thereafter a second voltage...
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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...
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7245475 |
Wide input voltage range relay drive circuit for universal defrost timer
A wide input voltage range relay drive circuit allowing a more than 2:1 input voltage variation is provided. The circuit utilizes a scaled and rectified bulk voltage to drive the relay coil. As the...
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7245474 |
Circuit arrangement and method for controlling a bistable magnetic valve
A circuit arrangement and also a method for controlling a bistable magnetic valve in which a magnetic valve is to be supplied with a pulse of electrical current in order to switch over the magnetic...
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7239498 |
Mining solenoid
The invention relates to a mining electromagnet for the switching of hydraulic pilot valves or main control valves used in underground mining operations, with a coil which can be connected to an...
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7212390 |
Electronic control circuit for a starting switch of a motor vehicle
An electronic control circuit for a motor vehicle starter contacter includes a management unit ( 26 ) having:
first means for detecting the open or closed state of the power contact ( 20 ),...
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7212090 |
Relay with core conductor and current sensing
A relay situated in series between an AC line source and an AC load has a core conductor connected with the fixed N.O. contact, so that load current flows axially through the core of the actuator...
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7196895 |
Electronic control system having power source relay fusion detecting circuit
An electronic control system comprises a power source, a controller and a power source relay for supplying and cutting off a supply of power to the controller. A fusion detecting circuit includes a...
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7161787 |
Low power solenoid driver circuit
The present invention provides a system and method for controlling a solenoid that ensures accurate timing between the enabling of the driving circuit and the activation of the solenoid, while...
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7161377 |
Bus type connection system in particular for backplanes
The invention relates to bus type connection systems, in particular those for wiring backplanes of electronic systems, when the bus comprises connectors distributed in an irregular manner. It...
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