Patents
Patents for H01H 47 - Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current (7,312)
06/2000
06/28/2000EP1012958A1 Motor reversing circuit
06/21/2000CN1257291A Electromagnetic control equipment for power supply circuit with current supply kept by electromagnet
06/20/2000US6078160 Bidirectional DC motor control circuit including overcurrent protection PTC device and relay
06/14/2000EP1009007A1 Control device for an electromagnet with a local control input
06/14/2000EP1009006A1 Standard control device for an electromagnet for opening or closing a circuit breaker
06/14/2000EP1009005A1 Control device for an electromagnet for opening or closing a circuit breaker, with local and remote control
06/14/2000EP1009004A1 Control device for an electromagnet, with detection of accidental movement of the movable core of the electromagnet
06/14/2000EP1009003A1 Control device for an electromagnet, with a power supply powered by the holding current of the electromagnet
06/14/2000EP0909451B1 Inductive charge control device
06/14/2000EP0681310B1 Load driving circuit
06/14/2000CN2383203Y DC insulation monitoring relay
06/14/2000CN1256501A Standard control device of circuit breaker for breaking or closing electromagnets
06/14/2000CN1053538C Self-generating power AC two-conductor switch using mutual inductor
06/07/2000CN2382125Y Energy saving contactor
06/02/2000WO1999063561A3 Device for safely disconnecting an electrical load with especially high inductivity from an electrical dc-voltage supply
05/2000
05/31/2000EP1005051A2 Method and device for driving an electromagnetic consumer
05/31/2000EP1004059A1 Method for detecting malfunctions of a first relay
05/31/2000DE19854305A1 Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers Method and apparatus for actuating an electromagnetic load
05/31/2000CN1053061C Circuit for controlling one contactor
05/24/2000CN2379899Y Down placed ac contactor
05/24/2000CN2379898Y AD contactor type silencing temp. lowering and energy saving device
05/17/2000CN2378826Y Mechanical double-steady-state relay
05/17/2000CN2378825Y Non-sound, energy-saving AC contactor
05/17/2000CN2378824Y DC controller for AC contactor
05/10/2000EP0999354A2 Wide voltage range driver circuit for a fuel injector
05/09/2000US6061226 Relay circuit with cyclical controlled capacitor
05/09/2000US6061225 Method and apparatus for controlling a solenoid within an electric dispensing gun
05/09/2000US6061224 PWM solenoid driver and method
05/09/2000US6060797 Solenoid operated remote resetting device with a protective activation circuit
05/09/2000US6060796 Protective circuit
05/04/2000DE19935639A1 Safety circuit has terminal connected via electronic circuit activated by control switch
05/03/2000EP0997642A1 Control circuit for an electromagnetic coil with duty ratio adjustment for compensating power source voltage fluctuations
04/2000
04/26/2000EP0857251B1 Drive circuit
04/26/2000CN1251467A Power-supply switch for controlling domestic electric appliance
04/25/2000US6054656 Contactor safety interlock mechanism
04/19/2000EP0994499A1 Electronic power supply device for an electromagnetic switch device
04/18/2000US6052266 Ground fault circuit interrupter
04/18/2000US6051894 Safety device of industrial robot
04/12/2000CN2373888Y Automatic switching electricity-saving device
04/11/2000US6047634 Fail-safe automatic sliding operation control apparatus for press
04/05/2000EP0879474B1 Electronic switch magnet control system for switching on and holding a contactor
04/05/2000CN2372780Y Noiseless electricity-saving device for ac contactor
04/04/2000US6046900 Solenoid driver circuit for use with digital magnetic latching valves
04/04/2000CA2210361C Circuit breaker failure protection process
03/2000
03/29/2000CN1249076A Motor reversing circuit
03/22/2000EP0986703A2 Device for controlling an electromechanical setting device
03/22/2000CN2370557Y High sensitive small type high power relay
03/22/2000CN1050716C Local regulation type electrical equipment and electrical machinery
03/15/2000CN2369347Y Energy saving A. C. contactor
03/09/2000DE19840356A1 Elektronischer Mehrzweckschalter Electronic multipurpose switch
03/08/2000EP0984475A2 Multiple function electronic switch
03/08/2000CN2368153Y Self-holding energy-saving type ac. contactor
03/07/2000US6034449 Load drive circuit
02/2000
02/29/2000US6031708 Inductive charge control device
02/23/2000CN2365754Y Ultrasmall large power relays
02/16/2000EP0979549A1 Electromechanical switching device
02/16/2000EP0865660B1 Switchgear control apparatus
02/16/2000CN2364545Y Subminiature medium power relay
02/08/2000US6023228 Method and apparatus for checking electrical drive mechanisms
02/08/2000US6023110 Switching equipment
02/02/2000CN2362236Y Remote-control switch device for domestic electrical equipment
01/2000
01/26/2000EP0974993A2 Electrical switchgear with synchronous control system and actuator
01/26/2000CN2360931Y A.C./d.c controllable triggering contactor
01/26/2000CN2360930Y Combined electrical control switch for heating rice cooking vehicle
01/25/2000US6017017 Process and apparatus for the recognition of the state of a solenoid valve
01/12/2000CN1241288A Reduced tensioning time for electronically controlled switch contactors
01/12/2000CN1241012A Electrical switchgear with synchronous control system and actuator
01/05/2000CN2357408Y DC contactor
01/04/2000US6011325 Rotary switch with redundant contacts
01/04/2000CA2080522C Apparatus for the determination of the state of an instrument, especially the open and the closed state of an electrical appliance with ancillary contacts
12/1999
12/22/1999EP0965140A1 Current-controlled output stage for electromagnetic actuators
12/15/1999EP0963596A1 Electro-mechanical switching device
12/15/1999EP0963594A1 Modular safety switch
12/15/1999EP0963593A1 Motor drive
12/09/1999WO1999063561A2 Device for safely disconnecting an electrical load with especially high inductivity from an electrical dc-voltage supply
12/09/1999CA2333483A1 Device for safely disconnecting an electrical load
12/08/1999CN2353039Y Connector energy saving device
12/07/1999US5999418 Control device for an electromagnet coil
12/07/1999US5999396 Circuit for driving a contactor
12/07/1999US5999395 Monitoring circuit for a constant monitoring of a plurality of signal inputs
12/07/1999US5998950 Garage door operator safety apparatus
12/01/1999CN2351831Y AC contactor without holding current
12/01/1999CN2351830Y Double state controlling relay
12/01/1999CN2351829Y Efficient energy-saving AC contactor
12/01/1999CN1237268A Controller for relay
11/1999
11/24/1999EP0959238A2 Drive circuit
11/24/1999CN2350862Y Arcless AC contactor
11/23/1999US5991144 Circuit for tripping breaker
11/17/1999CN1046591C Driving circuit of electromagnetic switch
11/16/1999US5986896 Programmable controller having a system for reducing energy consumption of relay outputs
11/11/1999WO1999047905A3 Handheld sensing apparatus
11/10/1999EP0954894A1 Reverse battery protecting device for the on-board electric network of a vehicle
11/10/1999CN2348514Y Mains switch for domestic electrical equipment
11/10/1999CN1234721A Electronic component
11/09/1999US5982605 Solenoid driver circuit for use with digital magnetic latching solenoids
11/03/1999CN2347295Y Electricity saving protector of a. c. contactor
11/03/1999CN2347264Y Electricity saving a. c. contactor
11/03/1999CN2347263Y Special control button for a. c. contactor
11/02/1999US5978201 Design for solenoid driving circuit based on regulations of current ripple and solenoid effective time constant for driving keys of a player piano
11/02/1999US5975057 Fuel injector control circuit and system with boost and battery switching, and method therefor
1 ... 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 ... 74