| Patents for H02H 9 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection (21,232) |
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| 04/12/1983 | US4379984 Brushless DC motor driven by complementary type transistors |
| 03/29/1983 | CA1143802A1 Circuit protection devices comprising ptc elements |
| 03/22/1983 | US4377832 Voltage transient suppressor circuit |
| 03/08/1983 | CA1142580A1 Protective circuit for zinc oxide varistors |
| 03/08/1983 | CA1142577A1 D.c. power transmission line |
| 03/01/1983 | US4375661 Overvoltage protection circuit for a television |
| 03/01/1983 | US4375587 Microwave oven energization circuit and components therefor |
| 03/01/1983 | CA1142218A1 Line protector for a communications circuit |
| 02/22/1983 | CA1141822A1 Soft turn-on power |
| 02/17/1983 | WO1983000586A1 Protection device against over-voltage in an electric distribution network |
| 02/16/1983 | EP0072146A1 Electric switching surge protection |
| 02/09/1983 | EP0071484A1 A secondary arc extinction device |
| 02/09/1983 | EP0071277A1 Surge arrester with a bypass gap |
| 01/25/1983 | CA1140206A1 Multi-series group capacitor bank protection equipment |
| 01/18/1983 | US4369491 Protective circuitry for transistorized d-c/d-c converter |
| 01/04/1983 | US4367507 Apparatus for clearing faults on untransposed transmission lines using single phase switching |
| 01/04/1983 | CA1138925A1 Surge arrester assemblies |
| 12/29/1982 | EP0067839A1 Voltage controlled transient protection unit. |
| 12/22/1982 | EP0067620A2 Secondary arc extinction device |
| 12/22/1982 | EP0067563A1 Secondary arc extinction device |
| 12/22/1982 | EP0067532A1 Secondary arc extinction device |
| 12/14/1982 | CA1137545A1 Fail safe surge arrester systems |
| 12/14/1982 | CA1137544A1 Line protector for a communications circuit |
| 12/14/1982 | CA1137543A1 Line protector for a communication circuit |
| 12/14/1982 | CA1137542A1 Surge voltage arrester with fail-safe feature |
| 12/09/1982 | WO1982004349A1 Semiconductor current regulator and switch |
| 11/09/1982 | US4358808 High energy overcurrent protective device |
| 10/28/1982 | WO1982003733A1 Subscriber telephone set provided with protection devices against overvoltages |
| 10/06/1982 | EP0061838A1 Surge voltage protection arrangements |
| 10/06/1982 | EP0061652A1 Overvoltage protection device for domestic electrical appliances |
| 10/05/1982 | CA1133047A1 Protection circuit for controlling the effect of induced current on line signal repeaters |
| 09/30/1982 | WO1982003297A1 Protection device against over voltages for domestic electric installations |
| 09/29/1982 | EP0061343A2 An arrester device for protecting a thyristor valve arrangement from overvoltage |
| 09/07/1982 | US4348709 Electronic load protection circuit |
| 08/31/1982 | US4347543 Rectifier circuit diode array and circuit protector |
| 08/31/1982 | US4347539 Electrical equipment protective apparatus with energy balancing among parallel varistors |
| 08/31/1982 | US4347482 Amplifier equipped with circuit for preventing electrostatic breakdown |
| 08/31/1982 | US4347475 Overvoltage protection device mainly for vehicle-bound electronic equipment |
| 08/24/1982 | CA1130423A1 Disconnect and overload bypass arrangement for a portable tool |
| 08/10/1982 | CA1129495A1 Electronic protection circuit incorporating voltage divider sensing, gating and triggering |
| 08/10/1982 | CA1129487A1 Overvoltage protection device |
| 08/03/1982 | CA1128995A2 High frequency circuit for operating a high-intensity, gaseous discharge lamp |
| 07/27/1982 | US4342061 Voltage reduction safety circuit |
| 07/27/1982 | US4342013 Bidirectional power line filter |
| 07/21/1982 | EP0056275A1 Device for protecting an electric line from very steep edge disturbances |
| 07/20/1982 | US4340853 Method of testing the windings and insulation system of a motor by applying the test voltage before completing a path to ground |
| 07/08/1982 | WO1982002287A1 Voltage controlled transient protection unit |
| 07/06/1982 | US4338646 Current limiting circuit |
| 06/29/1982 | CA1126813A1 Switching type power supply circuit |
| 06/22/1982 | US4336561 Superconducting transformer |
| 06/22/1982 | CA1126370A1 Firing circuit for electric ignition element |
| 06/15/1982 | CA1125843A1 Line protector |
| 06/15/1982 | CA1125841A1 Lightning resistive device in aerial power transmission system |
| 06/08/1982 | US4334264 High voltage direct current transmission apparatus |
| 06/08/1982 | US4334256 Automotive surge suppressor |
| 06/01/1982 | CA1124778A2 Modular line protector |
| 05/25/1982 | CA1124316A1 Current limiting devices |
| 05/19/1982 | EP0052091A1 Protection arrangement against excess arc-currents |
| 05/05/1982 | EP0050966A1 Protection circuit for a power distribution system |
| 05/04/1982 | US4328538 Switching arrangement to protect a component against overcurrent due to magnetic saturation of an inductor |
| 05/04/1982 | US4328523 Method and apparatus for the protection of electrical equipment from high voltage transients |
| 05/04/1982 | US4328459 Current inrush limiting apparatus |
| 04/27/1982 | US4327397 Computer power/temperature protector |
| 04/27/1982 | CA1122647A1 Rapid transit system transient voltage suppression apparatus |
| 04/21/1982 | EP0050034A1 Transient surge protective circuit |
| 04/21/1982 | EP0049908A1 Aerial power transmission system |
| 04/20/1982 | US4326233 Lightning arrester |
| 04/20/1982 | CA1122267A1 Overvoltage protection device |
| 04/15/1982 | WO1982001276A1 Solid state ballast with high frequency inverter fault protection |
| 04/14/1982 | EP0049696A1 Overvoltage guard for electronic circuits |
| 04/13/1982 | US4325100 Line protector for a communications circuit |
| 04/13/1982 | US4325097 Four terminal pulse suppressor |
| 04/06/1982 | US4323942 Solid-state protector circuitry using gated diode switch |
| 03/30/1982 | US4322772 Rapid transit system transient voltage suppression apparatus |
| 03/30/1982 | US4322767 Bidirectional solid-state protector circuitry using gated diode switches |
| 03/23/1982 | US4321644 Power line transient limiter |
| 03/23/1982 | US4320763 Protection device for pacemaker implantees |
| 02/24/1982 | EP0046456A1 Current-limiting device for a gas laser supply |
| 02/24/1982 | EP0046408A1 Transient energy control and suppression circuit |
| 02/04/1982 | WO1982000372A1 Current limiting circuit |
| 02/02/1982 | US4314304 Line protector for a communications circuit |
| 02/02/1982 | US4314303 Overvoltage protection device |
| 02/02/1982 | US4314196 Current limiting circuit |
| 02/02/1982 | US4314191 Protective system for inverter circuit used in driving AC motors |
| 02/02/1982 | US4314167 Voltage clamping circuit |
| 01/12/1982 | CA1116211A1 Current limiting circuit breaker with high speed magnetic trip device |
| 01/05/1982 | US4309734 Methods and apparatus for limiting electrical current to a subsea petroleum installation |
| 12/23/1981 | EP0042213A1 Line protector for a communications circuit |
| 12/22/1981 | US4307430 Protector device for telecommunications circuits |
| 12/15/1981 | US4306264 Disconnect and overload bypass arrangement for a portable tool |
| 12/09/1981 | EP0041098A1 Coaxial lead-through |
| 12/08/1981 | US4305109 Surge arrester for a plurality of lines to be safeguarded |
| 12/08/1981 | CA1114014A1 Combination circuit breaker-lightning arrestor |
| 11/24/1981 | CA1113147A2 Equipment for protecting telephone lines |
| 11/24/1981 | CA1113146A1 Grounding conductor current minimizing circuitry |
| 11/11/1981 | EP0039342A1 Protector device for telecommunications circuits |
| 11/03/1981 | CA1111912A1 High resistance ground fault detector |
| 10/28/1981 | EP0038715A1 Circuit protection devices |
| 10/20/1981 | US4296278 Loudspeaker overload protection circuit |
| 10/13/1981 | US4295174 Multi-series group capacitor bank protection equipment |