| Patents for H02H 9 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection (21,232) |
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| 01/27/1988 | CN87206642U Safety energy-saving supply protector |
| 01/19/1988 | CA1231753A1 Interactive overvoltage protection device |
| 01/13/1988 | EP0252493A1 Protective device for an electrical power line against its transient overvoltages |
| 01/12/1988 | US4719530 Lightning protection system for a remote control circuit utilizing an isolation transformer |
| 01/12/1988 | CA1231427A1 Electrical disturbance protective device between a terminal and a telephone line |
| 01/12/1988 | CA1231361A1 Varistor fuse element |
| 01/07/1988 | DE3621200A1 Protection module for telecommunications installations |
| 01/05/1988 | US4717902 Electrical components incorporating a temperature responsive device |
| 12/29/1987 | US4716511 Surge current-limiting circuit |
| 12/29/1987 | CA1230919A1 High voltage filtering and protection circuit |
| 12/23/1987 | EP0250158A2 Improvements in and relating to power supplies for electrical and electronic equipment |
| 12/15/1987 | CA1230374A1 Electronic grounding system for electrical distribution systems |
| 12/09/1987 | EP0248319A1 Circuit for protecting an electronic subscriber line interface circuit |
| 12/01/1987 | US4710685 Vehicle power window control circuit with reverse battery protection |
| 11/25/1987 | EP0246820A2 Electrical distribution apparatus having fused draw-out surge arrester |
| 11/25/1987 | EP0246644A2 Device for recording current-impulses which go through the earth-circuit of overvoltage arresters in high-voltage networks |
| 11/19/1987 | WO1987007050A1 Device for filtering and transient stabilization of the network voltage |
| 11/17/1987 | US4707049 Electrical connector having transient protection |
| 11/05/1987 | WO1987006787A1 Telephone protection circuit |
| 11/05/1987 | DE3614589A1 Overvoltage protection for DC voltage networks |
| 11/04/1987 | CN87100300A Restoring circuit for complementary metal-oxide-semiconductor locking-in state |
| 11/03/1987 | US4704654 Over-voltage protective circuit for semiconductor network |
| 11/03/1987 | CA1228907A1 Power line transient surge suppressor |
| 10/27/1987 | US4703388 Overvoltage protection circuit arrangement for vehicular antiskid brake control systems |
| 10/27/1987 | US4703386 Power receptacle and associated filter |
| 10/27/1987 | US4703385 In a high voltage network |
| 10/21/1987 | EP0242022A1 Device for limiting surge current |
| 10/13/1987 | US4700257 For a power transport line |
| 10/13/1987 | US4700130 Current-measuring arrangement with overload protection |
| 10/07/1987 | EP0239863A1 Circuit for the protection of a load against overvoltages |
| 10/06/1987 | US4698722 Transient protection unit |
| 10/06/1987 | US4698721 Power line filter for transient and continuous noise suppression |
| 09/29/1987 | US4697219 Snubber circuit for gate turnoff thyristor |
| 09/22/1987 | US4695917 Inductive power controller |
| 09/22/1987 | US4695916 Protector circuit |
| 09/22/1987 | US4695741 Switchgear |
| 09/22/1987 | US4695413 Reducing power losses and rapid voltage and current variations |
| 09/21/1987 | EP0204723A4 Auto-reset circuit breaker. |
| 09/15/1987 | US4694387 Inductive devices |
| 09/09/1987 | EP0235145A1 Device for supervision in non-directly earthed power systems. |
| 09/08/1987 | US4692834 Electrostatic discharge protection circuit with variable limiting threshold for MOS device |
| 09/08/1987 | CA1226622A1 Current overload detector |
| 09/03/1987 | DE3606287A1 Overvoltage protection arrangement |
| 09/02/1987 | EP0233907A1 Surge voltage protection arrangements |
| 09/01/1987 | US4691263 Low leakage, solid state a-c power contact |
| 08/26/1987 | EP0233669A1 Arrangement for galvanically interconnecting one or more electric conductors, while preventing electromagnetic radiation from transferring energy between conductors thus interconnected |
| 08/26/1987 | EP0233224A1 Device for filtering and stabilizing transients in the voltage of a network |
| 08/25/1987 | US4689713 High voltage surge protection for electrical power line |
| 08/18/1987 | US4688157 Switching circuit using a fast diode and provided with means for damping oscillations on opening |
| 08/13/1987 | DE3604049A1 Overvoltage protection device |
| 08/11/1987 | US4686602 Protective circuit arrangement for protecting semiconductor components |
| 08/06/1987 | DE3643391A1 Method for the automatic adjustment of earth-fault suppression coils |
| 07/30/1987 | DE3601862A1 Device for limiting the connection current (switching-on current) for loads which are operated using AC voltage |
| 07/28/1987 | US4683514 Surge voltage protective circuit arrangements |
| 07/21/1987 | US4681549 Printed circuit board edge connection arrangements |
| 07/15/1987 | EP0228584A1 Device for limiting alternating current |
| 07/15/1987 | EP0228539A1 Protection apparatus for patient-implantable device |
| 07/07/1987 | US4679115 Electrical disturbance protective device between a terminal and a telephone line |
| 07/07/1987 | US4679112 Transistor protection circuit for automotive motor control applications |
| 07/07/1987 | CA1223920A1 Electric drive for vehicle windows or roof panel |
| 06/30/1987 | US4677518 Transient voltage surge suppressor |
| 06/23/1987 | US4675772 Protector network for A-C equipment |
| 06/11/1987 | DE3542765A1 Supply circuit |
| 06/10/1987 | EP0224491A1 Method and circuit for providing adjustable control of short circuit current through a semiconductor device |
| 06/10/1987 | CN86106879A Automatic ground fault protection for an electric power system |
| 06/09/1987 | US4672500 Protective device for electrostatic sprayer equipment |
| 05/26/1987 | US4669027 Power line surge protector with internal shielding |
| 05/20/1987 | EP0222727A1 Device for minimizing the effects on a power system during the on-and-off switching of inductive and capacitive elements in a high voltage power system |
| 05/20/1987 | EP0222305A1 Integrated-circuit arrangement for the protection of subscriber lines against overvoltages |
| 05/20/1987 | CN86203937U Spark gap switching-in mechanism for ultra-high voltage parallel |
| 05/14/1987 | DE3539421A1 Protective circuit arrangement against overvoltages |
| 05/07/1987 | WO1987002837A1 Telephone subscriber loop overvoltage protection integrated circuit |
| 05/06/1987 | EP0220445A1 Overvoltage transient suppression assembly |
| 04/29/1987 | EP0219494A1 Arrangement for protection of delicate electric installations against lightning effects and devices provided therefor. |
| 04/29/1987 | CN86202647U Multi-purpose safety bulb bayonet |
| 04/29/1987 | CN86100173A Protective device for dangerous induction of overvoltage in communication cable |
| 04/28/1987 | US4661979 Fault protection for integrated subscriber line interface circuits |
| 04/28/1987 | US4661910 Protection circuit for detecting undervoltages in the electrical charging system of a motor vehicle |
| 04/28/1987 | US4661879 Overcurrent protection circuit for line circuits in a switching system |
| 04/28/1987 | US4661878 Overvoltage protection circuit |
| 04/21/1987 | US4660122 Foldback current limiting circuit |
| 04/21/1987 | US4660121 Electronic safety barrier |
| 04/16/1987 | DE3536872A1 Connection (switching-on) current limiting device for capacitive loads |
| 04/16/1987 | DE3535864A1 Current limiting circuit |
| 04/15/1987 | EP0217985A1 Transient suppression system |
| 04/08/1987 | EP0216894A1 Electronic fuse. |
| 04/07/1987 | US4656554 Shunt arrangement with power overload protection by a voltage responsive bidirectional switch |
| 04/07/1987 | US4656365 Solid state power controller leakage current shunt circuit |
| 04/02/1987 | DE3537150A1 Arrangement for suppressing overvoltage pulses |
| 03/26/1987 | DE3533750C1 Explosion-proof and/or flameproof electrical power supply unit having an alternator which is driven by compressed air |
| 03/24/1987 | US4652964 Varistor fuse element |
| 03/18/1987 | EP0214196A1 Circuit arrangement for simultaneous connection of several users to a supply network |
| 03/17/1987 | US4651251 Protective circuitry for a thyristor |
| 03/11/1987 | EP0213657A1 Device for protecting non-symmetric electric circuitry against high-energy interference voltages having steep transients |
| 03/11/1987 | EP0213354A1 Spark-over protection device in a transmitter circuit |
| 03/11/1987 | CN85204357U Circuit wave-drag device |
| 03/10/1987 | US4649457 Surge protection device |
| 03/10/1987 | US4649288 Pre-start warning system and machine incorporating such system |
| 02/26/1987 | WO1987001217A1 Device for filtering and stabilizing transients in the voltage of a network |
| 02/17/1987 | US4644437 Telephone subscriber loop overvoltage protection integrated circuit |