| 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) |
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| 06/22/1994 | CN1088362A Mult-functional universal contactor |
| 06/15/1994 | CN2169201Y Energy saving and silencing contactor |
| 06/15/1994 | CN2169200Y 节能接触器 Saving contacts |
| 06/15/1994 | CN1025103C Control and test system of apparatus using contactor |
| 06/08/1994 | EP0600311A2 Circuit for the safety monitoring of switching devices |
| 06/08/1994 | CN2168330Y Double-position controlling relay |
| 05/31/1994 | US5317475 Circuit arrangement for driving a group of relays |
| 05/25/1994 | EP0598612A2 Defrost cycle controller |
| 05/25/1994 | CN1087203A Relay without power consumption |
| 05/24/1994 | US5315471 Coil current regulator with induced flux compensation in an electromagnetic contactor system |
| 05/24/1994 | US5315221 Motor control with contact weld sensor and interrupter |
| 05/17/1994 | US5313153 Circuit arrangement for cyclic supply |
| 05/05/1994 | DE4236687A1 Electricity supply pref. for woodworking machine and suction unit - includes shunted amplifier and delay switch activated by operation of single manual switch on machine for both loads |
| 05/04/1994 | CN2164111Y Silicon-controlled power-economizer for AC contactor |
| 05/03/1994 | US5309314 Circuit configuration for actuating a safety relay |
| 05/03/1994 | US5309068 Two relay switching circuit for fluorescent lighting controller |
| 04/19/1994 | US5304756 Acceleration sensor with diagnostic resistor for detecting broken contacts |
| 04/14/1994 | WO1994008386A1 Method and device for regulating the mean current across an inductive load controlled to give a variable opening duty cycle |
| 04/13/1994 | EP0591755A1 Electric radiator fluids with continuous-flow heaters |
| 04/13/1994 | CN2161988Y AC contactor electricity-saving device |
| 04/13/1994 | CN2161987Y Multiple voltage electronic AC electromagnetic coil |
| 04/06/1994 | EP0590545A2 Earth leakage or differential current circuit breaker |
| 04/06/1994 | CN2160991Y Non-pressure running protector for ac contactor |
| 04/06/1994 | CN2160990Y Multifunctional electricity-saving contactor |
| 04/06/1994 | CN2160987Y Noiseless electricity-saving contactor |
| 04/05/1994 | US5301083 Remote control residential circuit breaker |
| 03/31/1994 | DE4303990C1 Relay switching control for protecting against HV transients - has power limiting diode and controlled period of switching using monitored relay condition using microcomputer control unit |
| 03/30/1994 | EP0589797A1 Self testable switching system |
| 03/24/1994 | DE4244118C1 Relay contact overload protection device - holds relay in on state until melt protection fuse is triggered upon load current exceeding predetermined threshold |
| 03/24/1994 | DE4231242A1 Reducing wear of electromechanical relay - using controlled switching in and switching out points for switching load related to voltage and current zero transitions |
| 03/15/1994 | US5294902 Fail-safe residential circuit breaker |
| 03/09/1994 | CN2158583Y Automatic delay and timing socket |
| 03/09/1994 | CN2158570Y Electronic energy saving ac contactor |
| 02/23/1994 | CN2157596Y Passive self-locking electronic contactor |
| 02/15/1994 | US5287243 Circuit device for electromagnetic switch |
| 02/09/1994 | CN2155615Y Solid-state current-converting power economizer |
| 02/02/1994 | CN2155067Y A.c. contactor ct energy saving silencer |
| 02/01/1994 | US5283706 For making and breaking an electrical load |
| 01/26/1994 | EP0579727A1 Garage door operator safety apparatus. |
| 01/26/1994 | CN2154534Y Energy-saving noise-ellimination contactor |
| 01/25/1994 | US5281939 Multiple pole solenoid using simultaneously energized AC and DC coils |
| 01/25/1994 | US5281859 Automatically switched power receptacle |
| 01/25/1994 | US5281857 Self-checking interlock control system |
| 01/19/1994 | EP0579110A1 Switched receptacle circuit |
| 01/19/1994 | CN2153862Y Intelligent ac magneto-electric device |
| 01/06/1994 | WO1994000322A1 Circuitry for monitoring an inductive circuit |
| 01/05/1994 | DE4221916A1 Monitoring circuit for switch status in electrical power circuit - has switch coupled to additional AC source and circuit elements forming resonance circuit |
| 01/05/1994 | DE4221196A1 Schaltungsanordnung zur Überwachung einer induktiven Schaltung Circuit arrangement for monitoring an inductive circuit |
| 12/29/1993 | EP0575626A1 Circuit for driving load |
| 12/29/1993 | CN1023365C Programmable inverse time delay circuit |
| 12/21/1993 | US5272589 Power control in relay coils |
| 12/21/1993 | US5272384 Differential pressure switch sensor control unit |
| 12/15/1993 | EP0573771A1 Contact status monitor |
| 12/14/1993 | US5270900 Solenoid response detector |
| 12/14/1993 | US5270576 Electrical connector network |
| 12/08/1993 | CN2149016Y Anti-explosive controller |
| 12/07/1993 | US5269002 Method and device for driving multiple latching relays |
| 12/01/1993 | CN2148392Y High-power touch electromagnetic switch |
| 12/01/1993 | CN2148391Y Power-saving contactor |
| 11/30/1993 | US5267120 Relay control apparatus |
| 11/24/1993 | EP0571122A1 Method and apparatus for enhancing relay life |
| 11/17/1993 | CN2146779Y Power economizer |
| 11/17/1993 | CN2146771Y Power-saving fire-proof device for electromagnet and contactor |
| 11/17/1993 | CN1078576A Protective circuit for electric appliance |
| 11/11/1993 | DE4214603A1 Controlled starter switch unit for vehicle electric devices - switches on second switch simultaneously with timed switch which stays active until voltage supply interrupt. |
| 11/09/1993 | US5260677 Snap-acting normally closed AC relay |
| 11/03/1993 | EP0567935A1 Soft-closure electrical contactor |
| 11/03/1993 | CN2145437Y No-voice electric-saving coil for alternating contactor |
| 10/27/1993 | CN2144862Y 节能电磁继电器 Saving electromagnetic relays |
| 10/27/1993 | CN2144861Y Double protecting electricity-saving silencer |
| 10/19/1993 | US5255152 Controller for fixed-time pull-in of a relay |
| 10/13/1993 | CN2143818Y Magnetic synchronous conversion electromagnetic device |
| 10/06/1993 | EP0563787A1 Monitoring circuit for computer controlled safety devices |
| 10/06/1993 | EP0563775A1 Bimetal-controlled protection circuit breaker |
| 10/06/1993 | EP0563774A2 Protective circuit breaker with remote control |
| 10/06/1993 | CN2143370Y Remote controlled socket for supply of domestic electric appliance |
| 10/06/1993 | CN2143361Y Energy saving unit for controlling AC contactor |
| 10/05/1993 | US5251093 Simplified self-latching relay switching circuit |
| 09/30/1993 | DE4209747A1 Current limiting circuit e.g. for relay or other inductive load - includes reference Zener diode to earth from control electrode of transistor switch having load in collector circuit |
| 09/29/1993 | EP0562908A1 Supply circuit for an electromagnetic relay |
| 09/21/1993 | US5247419 Low voltage switchgear |
| 09/16/1993 | DE4206258A1 Vehicle screen wiper installation preventing simultaneous relay operations - uses semiconductor switches to cut off current from other relays when one relay is energised from battery |
| 09/14/1993 | US5245260 Motor drive circuit with electronic fault protection |
| 09/08/1993 | EP0558868A1 Arrangement for a contact winding |
| 09/08/1993 | CN1022073C Control device for load current self-maintaining AC contactor |
| 09/07/1993 | US5243336 Relay supervision system |
| 09/07/1993 | US5243291 Electromagnetic contactor deposition detecting apparatus which detects load current and switch current |
| 09/01/1993 | EP0558190A1 Electromagnetic contactor with condition sensing |
| 09/01/1993 | EP0402359B1 Circuit arrangement for cyclic supply |
| 08/26/1993 | DE4205517A1 Current controlled switch e.g. for switching TV on and off - has current transformer feeding resonant circuit of series electrolytic capacitors with preamplifier powered by bridge rectifier |
| 08/25/1993 | EP0556754A2 Automatically switched power receptacle |
| 08/19/1993 | DE4214897C1 Circuit for protection of electronics against transient voltage surges - has detector stage that identifies increase and switches supply to internal arrangement having capacitor and constant current supply |
| 08/18/1993 | CN2140577Y Intelligent energy saving protector for electric motor |
| 08/18/1993 | CN2140558Y Electronic auto-switch for x-ray radiator |
| 08/17/1993 | US5237262 Temperature compensated circuit for controlling load current |
| 08/17/1993 | US5237248 Control circuit having double-pole double-throw switching device for electrically powered tool |
| 08/11/1993 | CN2140100Y Magnetic synchronization comersion economizer coil |
| 08/11/1993 | CN1021786C Magnetic maintaining control relay |
| 08/10/1993 | US5235303 Miniaturized universal electromagnet capable of operation in wide voltage range |
| 07/29/1993 | DE4201652A1 Control circuit for proportional valve electromagnet - controls proportional magnet directly using rectified mains voltage at approx. 250 volts |