| 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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| 08/17/1988 | CN86103570B Power-saving type electromagnetic mechanism |
| 08/16/1988 | US4764840 Dual limit solenoid driver control circuit |
| 08/09/1988 | US4762663 Switches detect malfunctions; one pair of contacts is open; other closed |
| 08/04/1988 | DE3701985A1 Ballast electronics for an apparatus which can be energised by DC voltage |
| 07/27/1988 | CN86209944U Ac contactor |
| 07/26/1988 | CA1239690A1 Bistable solenoid control circuit |
| 07/19/1988 | US4758918 Advanced latching circuit |
| 07/13/1988 | CN87206613U Simple electricity-saving device for a.c. contactor |
| 07/13/1988 | CN87204653U Multi-function and automatic control protection device for electrical equipments |
| 07/12/1988 | US4757418 Solenoid driver circuit |
| 07/12/1988 | CA1239177A1 Piezoelectric driven direct current latching relay |
| 07/06/1988 | CN87210825U Optical controlled switch |
| 06/23/1988 | DE3642233A1 Device for self-monitoring of relay contacts |
| 05/31/1988 | US4748343 Electromagnetic contactor with universal control |
| 05/24/1988 | US4747010 Bi-stable electromagnetic device |
| 05/24/1988 | US4747009 Air conditioner clutch control device |
| 05/18/1988 | EP0267455A1 Impulse current generator switched to a load |
| 05/18/1988 | EP0267430A1 Electromagnetic relay |
| 05/17/1988 | US4745514 Load current control device |
| 05/11/1988 | CN87209015U Conductor energy-saving performer |
| 05/11/1988 | CN87200821U Universal self-controller |
| 05/11/1988 | CN86208930U Ac conductor operating device with silence and pressureless plant |
| 05/05/1988 | WO1988003286A1 Power supply associated with ac line relay switch |
| 05/03/1988 | CA1236150A1 Solenoid operator circuit for molded case circuit breaker |
| 04/27/1988 | CN87205718U Micro power economizer for ac contactor |
| 04/19/1988 | US4739293 Electromagnetic contactor with reduced noise magnetic armature |
| 04/13/1988 | CN86209850U Delay and automatic release switch |
| 04/12/1988 | US4737882 Proportional solenoid valve control circuit |
| 04/07/1988 | WO1988002544A1 Solenoid driver control circuit with initial boost voltage |
| 04/07/1988 | DE3633905A1 Drive circuit for the magnet drive winding of a small DC contactor |
| 03/30/1988 | EP0261134A1 Process for controlling the excitation time of electromagnetic systems, in particular electromagnetic valves in internal combustion engines. |
| 03/29/1988 | US4734817 Magnetic clutch |
| 03/23/1988 | CN87213207U Power saving switch |
| 03/23/1988 | CN87204216U Universal power saver for electromagnetic switch |
| 03/23/1988 | CN87200189U Soundless and power-saving button for ac contactor |
| 03/03/1988 | DE3629780A1 Circuit arrangement |
| 03/02/1988 | CN86205648U Tandem converler |
| 03/01/1988 | US4729056 Solenoid driver control circuit with initial boost voltage |
| 03/01/1988 | US4728810 Electromagnetic contactor with discriminator for determining when an input control signal is true or false and method |
| 03/01/1988 | CA1233494A1 Alternating current driven latching relay and method of operation |
| 02/24/1988 | CN87200841U Shell type circuit switch |
| 02/16/1988 | US4725769 Current limited for constant current for switching driving devices |
| 02/16/1988 | EP0238509A4 Solenoid driver control unit. |
| 02/09/1988 | US4724506 Power-saving system for bowling machine |
| 02/09/1988 | US4724505 Relay combination |
| 02/03/1988 | CN86104842A Electromagnet energy economizing controller |
| 02/02/1988 | CA1232345A1 Apparatus and method for controlling electromagnetic clutches and the like |
| 01/19/1988 | US4720763 Electromagnetic contactor with control circuit for providing acceleration, coast and grab functions |
| 01/19/1988 | US4720762 Current drive circuit |
| 01/19/1988 | US4720761 Electromagnetic contactor with current regulated electromagnetic coil for holding the contacts closed |
| 01/14/1988 | WO1988000406A1 Circuit protector |
| 01/13/1988 | EP0252808A1 Command and control device for a contactor, and corresponding control process |
| 01/13/1988 | EP0252638A1 Drive circuit |
| 01/12/1988 | US4719532 Electrical controller |
| 12/29/1987 | US4716490 Power saving module |
| 12/29/1987 | US4716297 Method and apparatus for optically switching current |
| 12/23/1987 | CN86204002U Power-saving ac contactor |
| 12/22/1987 | US4714976 Multipole breaking device with remote control |
| 12/17/1987 | DE3619723A1 Additional controller, having contacts, for safety circuits |
| 12/16/1987 | EP0249512A1 Modular centralized switching unit |
| 12/16/1987 | EP0248849A1 Adaptive switching circuit |
| 12/15/1987 | US4713716 Detection device for contact fusion in an electromagnetic contactor |
| 12/15/1987 | US4713598 Power supply associated with AC line relay switch |
| 12/05/1987 | CN86210060U Electricity-saving controller for lamps in housing stairs |
| 12/03/1987 | WO1987007347A1 Circuitry for triggering the inductance of a pressure regulator |
| 12/01/1987 | US4710645 Device for monitoring the state of an electric switch or an electric relay |
| 11/26/1987 | DE3616974A1 Schaltungsanordnung zur ansteuerung der induktivitaet eines druckregelventils Circuit arrangement for controlling the inductance of a pressure regulating valve |
| 11/25/1987 | EP0246361A2 Electronic apparatus supplied by a battery and switchable by a push-button switch |
| 11/25/1987 | EP0246357A1 System for controlling an electrical injector valve |
| 11/19/1987 | DE3615908A1 Electromagnetic switching apparatus |
| 11/17/1987 | CA1229443A1 Latching relay drive circuit for use in telephone sets |
| 11/11/1987 | CN86108252A Energy-saving type multifunctional electronic thermorelay |
| 11/10/1987 | US4706158 Circuit breaker with self-contained electronic trip actuator and undervoltage release control circuit |
| 11/03/1987 | US4704656 Fiber optic wiring device control system |
| 11/03/1987 | US4704655 Solenoid drive circuit |
| 11/03/1987 | US4704652 Hybrid electrical power controller |
| 10/31/1987 | CN86210667U Power saving, electronic ac contactor |
| 10/28/1987 | EP0242759A2 Current limiter for constant current for switching driving devices |
| 10/28/1987 | EP0242635A2 Control signal profiler for multiple actuator assembly |
| 10/14/1987 | EP0241270A1 Self-testing monitoring circuit |
| 10/03/1987 | CN86206754U Transistor time relay for refrigerator |
| 09/30/1987 | EP0238743A1 Burner control systems |
| 09/30/1987 | EP0238509A1 Solenoid driver control unit. |
| 09/30/1987 | CN86206269U Automatic bread switch of electric network |
| 09/29/1987 | US4697221 Portable actuator for inductive load |
| 09/24/1987 | WO1987005662A1 Process for controlling the excitation time of electromagnetic systems, in particular electromagnetic valves in internal combustion engines |
| 09/09/1987 | EP0235551A2 Apparatus power supply switch |
| 09/02/1987 | EP0235050A1 Control device for electrical apparatuses |
| 08/18/1987 | US4688134 Ground fault circuit interrupter and electronic detection circuit |
| 08/18/1987 | US4688133 Electronic detection circuit for a ground fault circuit interrupter |
| 08/12/1987 | EP0231793A1 Electromagnetic relay |
| 08/11/1987 | US4686604 Bistable relay circuit |
| 07/29/1987 | EP0229880A1 Process and circuit for the periodic control of an electromagnet |
| 07/29/1987 | EP0229761A1 Fuel injection solenoid driver circuit. |
| 07/29/1987 | CN86206091U Miniaturized ancillary circuit |
| 07/28/1987 | US4682801 Electromagnet access control circuit |
| 07/22/1987 | EP0229722A2 Battery charging arrangements |
| 07/22/1987 | EP0229343A2 Piezoelectric relay switching circuit |
| 07/15/1987 | CN86202863U Noise-free power-saving driver |
| 07/14/1987 | US4680667 Solenoid driver control unit |