Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02H - Emergency protective circuit arrangements › H02H 9 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
Patents for H02H 9 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection (21,232)
11/1984
11/20/1984US4484244 Protection circuit for integrated circuit devices
11/13/1984US4482930 Electrical protection equipment with digital integration apparatus for firing pulse initiation
11/07/1984EP0123814A1 Circuit for limiting inrush current
11/06/1984US4481498 PTC Circuit protection device
11/06/1984CA1177527A1 Circuit protection devices comprising ptc element
10/1984
10/31/1984EP0123126A1 Overvoltage protection device
10/24/1984EP0122777A2 Intrinsically safe signal coupler
10/24/1984EP0122492A2 Starting circuit for a switched mains power supply
10/23/1984US4479084 Secondary arc extinction device
10/16/1984US4477748 Solid state ballast
10/09/1984US4476426 One-terminal type level control circuit
10/02/1984US4475138 Circuit protection devices comprising PTC element
10/02/1984US4475012 Subscriber telephone set incorporating overvoltage protection
09/1984
09/19/1984EP0118785A1 Two-pole overcurrent protection
09/18/1984US4472754 Surge arrester with a bypass gap
09/11/1984US4471401 Secondary arc extinction device
09/04/1984US4470005 Static VAR generator having a thyristor circuit arrangement providing reduced losses
08/1984
08/21/1984US4467310 Telephone subscriber line battery feed resistor arrangements
08/21/1984US4467245 Current-limited spark gap for transient protection
08/16/1984WO1984003181A1 Short-protected buffer circuit
08/14/1984US4466039 Open circuit current transformer protection circuit
08/07/1984US4464696 In an electric power system
07/1984
07/31/1984US4463406 Apparatus for protecting an electric line against disturbances with very steep wave fronts
07/24/1984US4461955 Isolated load switching with surge suppression
07/17/1984US4460935 Input protecting circuit for a semiconductor circuit component
07/10/1984US4459632 Voltage-limiting circuit
06/1984
06/26/1984US4456940 Voltage controlled transient protection unit
06/19/1984US4455586 High voltage filtering and protection circuit
06/13/1984EP0110759A1 Protection device of an equipment for a series insertion in the network
06/13/1984EP0110070A1 Installation protection switch
05/1984
05/23/1984EP0109336A2 Overvoltage protective device
05/22/1984CA1167918A1 Electrical equipment protective apparatus with energy balancing among parallel varistors
05/16/1984EP0108098A1 Device for the protection of an electronic device against voltages generated by an electromagnetic field
05/15/1984US4449157 Surge protection for signal transmission systems
05/09/1984EP0107762A1 Failsafe overvoltage protector
05/08/1984US4447846 Computer environment protector
05/08/1984CA1167101A1 Current limiting circuit
05/02/1984EP0107359A2 Alternating current limiting type semiconductor current circuit breaker
05/01/1984US4446499 Input protection circuit
04/1984
04/25/1984EP0106079A2 Surge protection for signal transmission systems
04/04/1984EP0104276A1 Electronic chopper circuit and method for its operation
04/04/1984EP0104193A1 Insulated device for the transmission of binary information through an electric line.
03/1984
03/27/1984US4439802 Overvoltage guard for electronic circuits
03/21/1984EP0103180A1 Combination of elements for a circuit for a combined protection of a consumer against over-voltage and over-current
03/20/1984US4438477 Combination power and communication line protection apparatus
03/20/1984US4438474 Current limiter and VAR generator utilizing a superconducting coil
03/20/1984US4438473 Power supply for an intrinsically safe circuit
03/20/1984US4438365 Spark gap for line transient protection
03/20/1984US4437464 Electrosurgical generator safety apparatus
03/07/1984EP0101774A1 Safe electric supply glow discharge
02/1984
02/28/1984US4434396 Power line transient suppression circuit
02/21/1984CA1162599A1 Four terminal pulse supressor
02/14/1984CA1162240A1 Voltage reduction safety circuit
02/07/1984US4430738 Arrangement for the current limitation during the current supply of electrically excited gas lasers
01/1984
01/24/1984US4428018 Low leakage filtered power supply
01/24/1984CA1161105A1 Method and apparatus for the protection of electrical equipment from high voltage transients
12/1983
12/20/1983US4422121 Line protector for a communications circuit
12/13/1983US4420700 Semiconductor current regulator and switch
12/07/1983EP0095902A1 Headphone level protection circuit
12/07/1983EP0095539A1 Line protector for a communications circuit
12/06/1983US4419711 Method and apparatus for the protection of electrical equipment from high voltage transients
11/1983
11/24/1983WO1983004157A1 Device for the protection of an electronic device against voltages generated by an electromagnetic field
11/22/1983CA1157597A1 Current supplying circuit with shorted-to-ground fault detecting function
11/22/1983CA1157512A1 High voltage direct current transmission apparatus
11/16/1983EP0093932A1 Device for eliminating static electricity
11/15/1983CA1157117A1 High power current limiter with a current commutating resistive element
11/15/1983CA1157080A1 Power connector with overvoltage protection
11/08/1983US4414600 Protection device for high intensity gaseous discharge lamp starting circuit
11/08/1983US4414599 Arrester and a semiconductor circuit arrangement with a protection device including the same
11/02/1983EP0092820A1 Circuit arrangement for the overvoltage protection of intersection circuits
11/01/1983US4413301 Circuit protection devices comprising PTC element
10/1983
10/26/1983EP0092052A1 Device for the protection of appliances connected to lines against overvoltages or disturbances
10/25/1983US4412265 Intrinsic barrier
10/18/1983CA1155486A1 Lightning arrestor
10/13/1983WO1983003500A1 Insulated device for the transmission of binary information through an electric line
10/11/1983US4409540 Active voltage divider
10/05/1983EP0090693A1 Device for marking the position of printed circuit boards with respect to their connectors
10/04/1983US4408248 Protection circuit
09/1983
09/21/1983EP0089049A2 Arrangement for suppressing the switch-on current peaks in a power network
09/20/1983US4405965 Current limiting device for overcurrent protection
09/13/1983US4404473 Direct current power controller
09/07/1983EP0087884A1 PTC circuit protection device
09/01/1983WO1983003035A1 Electronic current interrupter included in a dc distribution system
08/1983
08/23/1983CA1152558A2 Fail safe surge arrester systems
08/23/1983CA1152557A1 Surge voltage arrester with ventsafe feature
08/17/1983EP0086119A1 Electric geared motor in particular for displacing movable elements of an automotive vehicle
08/02/1983US4396882 Inrush current limiter
07/1983
07/19/1983US4394148 Short circuit proof driver and alarm circuit for a solenoid in a glassware forming machine
07/06/1983EP0083306A1 Process and device to control at least one compensation coil in a polyphase network
06/1983
06/28/1983US4390919 Electronic surge arrestor
06/22/1983EP0081604A1 Pair of iron cores, and coil form bobbin for alternating current protection
06/21/1983US4389695 Equipment for protecting electronic equipment and personnel against inadvertent occurrence of extended or transient high voltages and method
06/21/1983CA1148604A1 Line protector for a communications circuit
05/1983
05/24/1983US4385338 Power connector with overvoltage protection
05/24/1983US4385336 Current supplying circuit with shorted-to-ground fault detecting function
05/18/1983EP0078985A1 Internal voltage grading and transient voltage protection for power transformer windings
05/17/1983CA1146626A1 Voltage clamping circuit
05/11/1983EP0078620A1 Protective circuit for control unit power supply
04/1983
04/27/1983EP0077360A1 Subscriber telephone set provided with protection devices against overvoltages.
04/13/1983EP0076609A1 Active voltage divider
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