| Patents for H02H 9 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection (21,232) |
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| 04/18/1990 | EP0363746A1 Overcurrent protection device for electrical networks and apparatuses |
| 04/17/1990 | US4918565 Electrical surge suppressor |
| 04/12/1990 | DE3834514A1 Circuit arrangement for protecting electrical devices and systems against overvoltages |
| 04/11/1990 | EP0362407A1 Power supply apparatus |
| 04/10/1990 | EP0282506A4 A.c.-d.c. spike eliminating bandpass filter. |
| 04/05/1990 | WO1990003681A1 Circuit protection arrangement |
| 04/04/1990 | EP0361697A2 Protection devices and arrangements for telephone lines |
| 04/04/1990 | EP0360933A1 An improved transient suppression device |
| 04/04/1990 | CN2055657U Protector for general line-distributor of telephone |
| 04/03/1990 | US4914540 Overvoltage-protective device |
| 03/29/1990 | DE3831935A1 Overvoltage protection |
| 03/28/1990 | EP0360160A2 Logic signal circuit for a releasing relay |
| 03/28/1990 | EP0359912A2 Explosion-protected electrical safety barrier |
| 03/27/1990 | US4912590 Electrical surge suppressor and dual indicator apparatus |
| 03/27/1990 | US4912589 Surge suppression on AC power lines |
| 03/22/1990 | WO1990003058A1 Apparatus suitable for use in protecting electrical installations from transients |
| 03/21/1990 | EP0359125A1 High-tension direct-current circuit breaker |
| 03/20/1990 | US4910654 Current limiting scheme for the AC input circuit to a switch mode power supply |
| 03/20/1990 | CA1266883A1 Protector circuit |
| 03/14/1990 | CN2054608U Protecting device for electromagnetic stove power parts |
| 03/14/1990 | CN2054584U Anti-thunder, overvoltage, overcurrent protector for wire-broadcasting network |
| 03/14/1990 | CN1040465A Voltage type electronic relay |
| 03/13/1990 | US4908729 Lightning arrester monitor |
| 03/08/1990 | WO1990002431A1 Surge protection device |
| 03/07/1990 | EP0357060A2 Overvoltage protection device for an electronic circuit |
| 03/06/1990 | US4907119 Packaged electrical transient surge protection |
| 02/28/1990 | EP0356310A1 Electronic motor starter |
| 02/28/1990 | EP0356186A2 Power control circuit for electronic equipment |
| 02/27/1990 | US4905119 Solid state overvoltage protection circuit |
| 02/21/1990 | CN1039934A Overvoltage protection circuit |
| 02/20/1990 | US4903295 Compact solid state station protector device |
| 02/20/1990 | US4903185 Filtering device of the common mode disturbances affecting the printed circuit boards of a static power converter |
| 02/20/1990 | US4903161 Surge suppression for low voltage signal circuits |
| 02/20/1990 | CA1266117A1 Automatic ground fault protection for an electric power system |
| 02/13/1990 | US4901187 Electrical transient surge protection |
| 02/13/1990 | US4901186 Temperature compensated thermal protector |
| 02/13/1990 | US4901183 Surge protection device |
| 02/08/1990 | DE3826282A1 Electrical machine or apparatus having a winding, which has metal-oxide resistors for overvoltage limiting, and a method for its production |
| 02/07/1990 | EP0353449A1 Inductive current limitation device for an alternating current using the superconductivity superconductor |
| 02/07/1990 | CN2052585U Anti-thunder protector for radio equipment |
| 01/31/1990 | EP0353166A2 Overvoltage protection circuit |
| 01/31/1990 | EP0352828A2 Control circuit for the clamping voltage of an inductive load drive by a power device in a high side driver configuration |
| 01/31/1990 | CN2052162U Arrester for computer |
| 01/25/1990 | WO1990000830A1 Conversion circuit for limiting inrush current |
| 01/25/1990 | WO1990000827A1 Electrical circuit protection arrangement |
| 01/25/1990 | WO1990000826A1 Circuit protection arrangement |
| 01/25/1990 | WO1990000825A1 Assemblies of ptc circuit protection devices |
| 01/23/1990 | US4896254 Protective power controller |
| 01/17/1990 | EP0350916A2 Superconducting switch and current limiter using such a switch |
| 01/17/1990 | EP0350639A2 Device for limiting the input current of a power supply |
| 01/10/1990 | EP0350477A2 Disconnexion device for surge arresters |
| 01/10/1990 | EP0349837A2 An electronic circuit with a protection device against fluctuations in the supply battery voltage |
| 01/10/1990 | CN1038726A Switch type power supply with protective arrangement for limiting output voltage |
| 01/09/1990 | US4893211 Method and circuit for providing adjustable control of short circuit current through a semiconductor device |
| 01/03/1990 | EP0349477A2 Solid state overvoltage protection circuit |
| 01/03/1990 | EP0349445A1 Protection device against the effects of electromagnetic nuclear pulses |
| 01/03/1990 | EP0348447A1 Process and device for preventing interference of transients in a buck cell |
| 01/03/1990 | CN1006345B Excess current protective circuit of converter |
| 01/02/1990 | US4891728 Circuit arrangement for limiting the switch-on current and for providing an over voltage protection in switch mode power supply devices |
| 01/02/1990 | US4891500 Self-healing parallel heating tape |
| 12/26/1989 | US4890212 Electric apparatus having a start-up control function |
| 12/26/1989 | US4890185 Circuit for protecting a switching transistor |
| 12/26/1989 | US4890182 Circuit protection device |
| 12/26/1989 | US4889495 Connecting mechanism for memory card |
| 12/20/1989 | EP0347189A2 Circuit for protecting input of semiconductor device |
| 12/20/1989 | EP0346849A2 Switching power supply with protection for limiting of output voltage |
| 12/13/1989 | EP0346262A2 Temperature compensated thermal protector |
| 12/13/1989 | EP0345767A1 Fault current limiter |
| 12/13/1989 | EP0345432A1 Diode for ESD protection of integrated circuits |
| 12/12/1989 | US4887182 Germanium, selenium, and antimony intermetallic |
| 12/12/1989 | US4887180 Device for protecting electronic equipment against strong electromagnetic pulses, more particulary due to lightening |
| 12/06/1989 | CN2049061U Safe electronic transformer for lathe lighting |
| 12/05/1989 | US4885506 Electronic magnetron power supply |
| 11/29/1989 | EP0343731A2 Unity-gain current-limiting circuit |
| 11/29/1989 | EP0343658A2 Lightning arrester monitor |
| 11/21/1989 | US4882646 Protective grounding and referencing arrangement for high voltage bulk supply |
| 11/21/1989 | US4882532 Active overvoltage control for inductive load driving |
| 11/16/1989 | WO1989011175A1 Protective power variator |
| 11/14/1989 | US4881147 Protection of sensitive electrical installations against the effects of lightning, and devices proposed for such arrangement |
| 11/07/1989 | US4879661 Bi-directional circuit to interface between a low current device and high current tester |
| 11/07/1989 | US4879477 Procedure and circuit arrangement for switching on an inductance subject to remanence |
| 11/02/1989 | EP0339598A2 Protection circuit for capacitives loads |
| 11/02/1989 | DE3813914A1 Device for protection against overvoltages |
| 11/02/1989 | DE3813536A1 Circuit arrangement for limiting current when inserting a subassembly (module) |
| 10/31/1989 | US4878145 Surge/transient protector for a plurality of data lines |
| 10/31/1989 | US4878038 Circuit protection device |
| 10/31/1989 | CA1262561A1 Intrinsically safe battery circuit |
| 10/26/1989 | DE3812058A1 Arrangement for overvoltage protection in low-voltage installations |
| 10/25/1989 | EP0338699A2 Transient protection circuit |
| 10/25/1989 | EP0338107A1 Overvoltage protection circuit used with a pair of telephone lines or similar data communication channels |
| 10/24/1989 | US4876713 Signal circuit protector device for consumer use |
| 10/24/1989 | US4876620 Protection devices and arrangements for telephone lines |
| 10/18/1989 | CN1036482A Circuit arrangement for protecting switch transistor |
| 10/18/1989 | CN1005509B Control arrangements for electromagnetic suitches |
| 10/17/1989 | US4875137 Uniform current and voltage distribution device |
| 10/11/1989 | EP0336194A2 Power field effect transistor driver circuit |
| 10/10/1989 | CA1262290A1 Thin film overvoltage protection devices |
| 10/05/1989 | WO1989009508A1 Power supply apparatus |
| 10/04/1989 | EP0335480A2 Modular electrical assemblies with pressure relief |
| 10/04/1989 | CN2045550U Multipurpose power-saving service life prolonging device (2) |