| Patents for H02H 9 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection (21,232) |
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| 06/25/1991 | US5027181 Circuit configuration for protecting an electronic circuit against overload |
| 06/23/1991 | WO1991010275A1 Overvoltage protection for series capacitor equipment |
| 06/19/1991 | EP0432459A2 Switch-on current limiter |
| 06/19/1991 | CN1052393A High tension dc. current-limiting circuit breaker |
| 06/12/1991 | EP0431510A1 Limiting high tension direct-current circuit breaker |
| 06/12/1991 | EP0430949A1 Surge protection device |
| 06/12/1991 | CN2078944U Overload protection of ceramic resistance with positive temp coefficient |
| 06/11/1991 | US5023747 Meter base surge suppresion system |
| 06/11/1991 | US5023746 Suppression of transients by current sharing |
| 06/11/1991 | US5023745 Surge arrestor apparatus and method |
| 06/11/1991 | US5023529 Control circuit |
| 06/09/1991 | CA2031832A1 High voltage, d.c. limiting circuit breaker |
| 06/05/1991 | EP0429718A1 Electro-motor |
| 06/05/1991 | EP0429489A1 Assemblies of ptc circuit protection devices. |
| 06/04/1991 | US5021914 Superconducting switch and current limiter using such a switch |
| 05/23/1991 | WO1991007799A1 System for protecting a dc power distribution bus during hot servicing |
| 05/23/1991 | DE3938700A1 Switching voltage limitation circuit for HV network - comprises matched ohmic resistance in parallel with string of saturable core inductors, latent in stationary operation |
| 05/22/1991 | CN2077600U Multifunction safety receptacle |
| 05/22/1991 | CN2077588U Energy-saving switch of ceramic resistor with positive temp. coefficient |
| 05/21/1991 | US5018042 Reducing differential potentials |
| 05/16/1991 | WO1991006968A1 Flyback current dampening apparatus |
| 05/15/1991 | EP0427635A1 Power control device, in particular dimmer, with protection against short-circuit and overload |
| 05/15/1991 | EP0427594A1 Circuit for pulsed supply for inductive loads with limiting the voltage |
| 05/14/1991 | US5016133 Apparatus for flicker protection when a servo-motor starts |
| 05/11/1991 | WO1991007798A1 A protective device for computers and the like, adapated to prevent the pick up, the recording and the unauthorized use of data from the computers during the working thereof, and to protect them against high energy transient disturbances taking place on the main a.c. power line |
| 05/11/1991 | CA2073011A1 Protective device for computers and the like, adapted to prevent the pick up, the recording and the unauthorized use of data from the computers during the working thereof, and to protect them against high energy transient disturbances taking place on the main a.c. power line |
| 05/08/1991 | EP0204723B1 Auto-reset circuit breaker |
| 05/07/1991 | US5014214 Use of diodes in an input circuit to take advantage of an active pull-down network provided in a dual regulator |
| 05/07/1991 | US5014156 Fused electrical safety barrier for protection of an electrical load placed in a potentially hazardous location |
| 05/07/1991 | US5014155 Circuit for protecting input of semiconductor device |
| 04/30/1991 | US5012382 Low impedance power conditioner apparatus and method |
| 04/30/1991 | US5012381 Motor drive circuit with reverse-battery protection |
| 04/30/1991 | US5012317 Electrostatic discharge protection circuit |
| 04/25/1991 | DE4030413A1 Short-circuit current limiter - with capacitor parallel to superconductor and rapid switch in tandem |
| 04/24/1991 | EP0423885A1 Current supply with inrush current limitation |
| 04/24/1991 | EP0423368A1 Electronic part with safe-guard function |
| 04/24/1991 | EP0423226A1 Conversion circuit for limiting inrush current |
| 04/23/1991 | US5010439 Control circuit for the clamping voltage of an inductive load driven by a power device in a high side driver configuration |
| 04/23/1991 | US5010438 Plug-in transient voltage suppressor module |
| 04/23/1991 | US5010293 Inrush current limiting circuit |
| 04/20/1991 | CA2028028A1 Intrinsically safe system |
| 04/17/1991 | EP0422487A2 Negative overvoltage protection circuit for insulated vertical PNP transistors |
| 04/17/1991 | EP0422486A2 Negative overvoltage protection circuit, in particular for output stages |
| 04/17/1991 | CN1050796A Low-noise, electric-shock resisting protection device for electric measurement |
| 04/16/1991 | US5008770 Filter pin integrated circuit socket kit |
| 04/16/1991 | CA1283162C Surge protector for telecommunications systems |
| 04/10/1991 | EP0421516A2 Power supply arrangement with voltage regulation and current limiting |
| 04/10/1991 | CN1050648A Surface contact power connector |
| 04/09/1991 | US5006950 Electrical transient surge protection with parallel means |
| 04/09/1991 | US5006734 Bidirectional current limiting circuit |
| 04/09/1991 | CA1282828C Lightning arrester monitor |
| 04/04/1991 | WO1991004599A1 Controllable temperature-compensated voltage-limiting device |
| 04/04/1991 | DE3931537A1 Terminal connector to voltage supply bus=bar - has output coupler for each terminal, with voltage limiting zener diode parallel to output coupler output |
| 04/03/1991 | EP0420471A2 Electrical connectors |
| 04/02/1991 | US5005100 Transient-filtered transformer |
| 03/27/1991 | EP0419230A2 Snubber circuit of power converter |
| 03/27/1991 | EP0418896A2 Circuit configuration for the protection of electronic circuits against a voltage surge |
| 03/26/1991 | US5003588 Circuit arrangement for protecting electronic interface circuit of subscriber line circuits |
| 03/21/1991 | DE3930539A1 Car windscreen wiper drive with DC motor - has single Zener diode for voltage limiting coupled to both brush pairs |
| 03/21/1991 | DE3929938A1 Overvoltage protection circuit for dynamo-using appliance - has two freewheeling voltage sources of different strength connectable to short circuit by overvoltage detector |
| 03/19/1991 | US5001587 Protection circuit for railroad signaling high voltage surge protection circuit |
| 03/19/1991 | CA1281768C Protection arrangements for communications lines |
| 03/12/1991 | US4999729 Satellite receiver protection apparatus |
| 03/12/1991 | CA1281369C Apparatus for limiting arc discharge current in incandescent lamp |
| 03/06/1991 | EP0415255A2 Protection circuit for use in semiconductor integrated circuit device |
| 02/28/1991 | DE3927547A1 Varistor switching=off circuit - causes solder point to melt when high current flows to cut=off varistor power supply |
| 02/27/1991 | EP0414195A2 Protection circuit protected from overvoltage and overcurrent |
| 02/27/1991 | EP0414069A2 Electromagnetic switching device connectable to an alternating current line |
| 02/27/1991 | EP0235145B1 Device for supervision in non-directly earthed power systems |
| 02/20/1991 | CN2071842U Thunderstroke prevention device for tv set |
| 02/19/1991 | US4994932 Superconducting current limiting apparatus |
| 02/06/1991 | CN2070964U Ptc thermal resistor protective device for communication line |
| 02/05/1991 | US4991051 Protection arrangements for communications lines |
| 01/29/1991 | US4989114 Bridge circuit having polarity inversion protection means entailing a reduced voltage drop |
| 01/23/1991 | EP0409477A2 Inductive inrush current control for off-line battery charger plant |
| 01/23/1991 | EP0409380A2 Packaged semiconductor surge protection device and electronic system comprising such a device |
| 01/16/1991 | EP0408124A2 Circuit for protection against negative overvoltages across the power supply of an integrated circuit comprising a power device with related control circuit |
| 01/09/1991 | EP0406636A1 Current limiter with superconductor |
| 01/08/1991 | US4983897 Control circuit |
| 01/02/1991 | EP0404878A1 Transient suppressor |
| 01/01/1991 | US4982306 Method of limiting starting current in a DC converter and device for performing the method |
| 12/27/1990 | EP0404220A1 Device for protection against overvoltages of integrated electronic circuits, particularly for applications in the motor car field |
| 12/27/1990 | EP0403643A1 Uniform current and voltage distribution device |
| 12/27/1990 | EP0248035B1 Telephone subscriber loop overvoltage protection integrated circuit |
| 12/26/1990 | CN2068290U Multi-functional domestic leakage safety unit |
| 12/18/1990 | US4979071 Protection circuit for a semiconductor circuit |
| 12/18/1990 | CA1278026C Device for protecting electrical power lines against high transient overvoltages |
| 12/17/1990 | WO1990016103A1 Plug-in transient voltage suppressor module |
| 12/12/1990 | EP0402262A1 Protection arrangement against high voltage sparks |
| 12/12/1990 | EP0401410A1 Circuit arrangement for protecting electronic circuits against overvoltages |
| 12/07/1990 | CA2011309A1 Transient surge suppressor and alarm signal circuit |
| 12/04/1990 | US4975797 Arrester with external isolator |
| 12/04/1990 | US4975067 Surface contact power connector |
| 11/29/1990 | WO1990014707A1 Electrical device with transient protection |
| 11/28/1990 | EP0399481A1 Current limiting device |
| 11/27/1990 | CA1276967C Protective circuit for series capacitor banks |
| 11/15/1990 | WO1990013960A1 Automatically resetting protection arrangement for a telephone subscriber line interface circuit |
| 11/15/1990 | DE3915198A1 Protection unit against transients due to atmospheric discharges - becomes effective when reaching or exceeding selected response voltage to provide protection and limit voltage |
| 11/14/1990 | EP0397017A2 Device for protecting semiconductor circuits against transients on the supply line |
| 11/14/1990 | CN1046980A Automatic protector for small-measuring range galvanometer |