| Patents for H02H 9 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection (21,232) |
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| 03/11/1998 | CN1037732C DC voltage source short-circuit protection circuit |
| 03/11/1998 | CN1037731C Protective circuit and protective plug for telecommunication installations |
| 03/10/1998 | US5726849 Input overcurrent suppression circuit |
| 03/10/1998 | US5726848 Fault current limiter and alternating current circuit breaker |
| 03/10/1998 | US5726506 Hot insertion power arrangement |
| 03/04/1998 | EP0827316A2 A device for protecting a telecommunications apparatus |
| 03/04/1998 | EP0827170A2 Electromagnetic drive apparatus |
| 03/04/1998 | EP0746864A4 Solid state circuit breaker |
| 03/04/1998 | EP0731986B1 Current-limiting device |
| 03/04/1998 | CN1175091A Semiconductor device |
| 03/03/1998 | US5724221 Direct contact varistor assembly |
| 03/03/1998 | US5724218 Power transistor with short-circuit protection |
| 02/26/1998 | WO1998001937A3 A connection means between a frequency converter and its load |
| 02/25/1998 | CN1174437A New lightning-protection method for distribution transformer and low-voltage power network |
| 02/24/1998 | US5721773 For disconnecting a customer from a telecommunications network |
| 02/24/1998 | US5721675 Power supply converting circuit |
| 02/24/1998 | US5721662 Floating ground isolator for a communications cable locating system |
| 02/24/1998 | US5721661 Power filter |
| 02/24/1998 | US5721660 Wiring structure for reducing transient impedance |
| 02/24/1998 | US5721659 Apparatus for protecting electrical and electronic equipment and associated method |
| 02/24/1998 | US5721658 Input/output electrostatic discharge protection for devices with multiple individual power groups |
| 02/18/1998 | CN2274835Y Lightning arrestor for computer and household electric appliances |
| 02/18/1998 | CN1173722A Electromagnetic drive apparatus |
| 02/17/1998 | US5719734 Electronic apparatus |
| 02/17/1998 | US5719473 High frequency operating circuit with in-rush current protection for operation of discharge lamps |
| 02/17/1998 | US5719450 Touch responsive electric power controller |
| 02/17/1998 | US5718593 Polarity-sensitive protector device |
| 02/14/1998 | CA2209725A1 Control system and method for electrically operated equipment |
| 02/11/1998 | EP0823057A2 Process for monitoring a three-phase mains for a change in the tuning of the arc supression coil |
| 02/11/1998 | CN1173065A Circuit arrangement |
| 02/10/1998 | US5717561 Sharing arrangement for surge protection circuitry |
| 02/10/1998 | US5717558 Electrostatic discharge protection for an electrical device |
| 02/04/1998 | EP0822560A2 Tubular high temperature superconductor arrangement |
| 02/04/1998 | CN2273912Y Lightning protection device of household apptiance |
| 02/03/1998 | US5715154 Circuit and method for controlling an inrush current limiter in a power conversion system that includes power factor correction |
| 02/03/1998 | US5714900 Electrical overstress protection device |
| 02/03/1998 | US5714869 Power source apparatus with battery and overcharge protection circuit |
| 02/03/1998 | US5714809 Soft switching circuit with current-mode control |
| 01/28/1998 | EP0821379A2 Switching device for soft switching on and off the power supply of a mains operated device |
| 01/28/1998 | EP0820652A1 Medical current limiter |
| 01/28/1998 | CN2273466Y Positive temperature coefficient overcurrent protector for stored program control switching system |
| 01/27/1998 | US5712775 Startup protecting for a switch mode power supply |
| 01/27/1998 | US5712756 Substation with surge arresters |
| 01/27/1998 | US5712755 Surge suppressor for radio frequency transmission lines |
| 01/27/1998 | US5712754 For a computer |
| 01/22/1998 | WO1998002949A1 Superconducting short-circuit current limiter |
| 01/22/1998 | WO1998002946A1 Circuit protection arrangements |
| 01/22/1998 | DE19628358C1 Supraleitender Kurzschlußstrombegrenzer Superconducting short circuit current |
| 01/22/1998 | CA2263073A1 Circuit protection arrangements |
| 01/21/1998 | EP0820135A1 Static self-holding micro-switch |
| 01/21/1998 | EP0691046B1 Arrangement for disconnecting branches of a low voltage supply network under short circuit conditions |
| 01/21/1998 | CN2273072Y Electro-control earthing arc extinguishing arrangement |
| 01/21/1998 | CN1171173A Electrical protective switch |
| 01/20/1998 | US5710552 Barrier device |
| 01/20/1998 | US5710465 Apparatus for driving electrical loads provided at a car |
| 01/15/1998 | WO1998001937A2 A connection means between a frequency converter and its load |
| 01/14/1998 | EP0818867A1 Circuit arrangement |
| 01/14/1998 | EP0755581B1 Overvoltage protection |
| 01/13/1998 | US5708550 ESD protection for overvoltage friendly input/output circuits |
| 01/13/1998 | US5708549 Integrated circuit having enhanced transient voltage protection and associated methods |
| 01/13/1998 | US5707886 Process for providing electrostatic discharge protection to an integrated circuit output pad |
| 01/07/1998 | EP0817349A2 High voltage protection circuits |
| 01/07/1998 | EP0817348A2 Current limiting device |
| 01/07/1998 | EP0750803A4 Current protection method and apparatus and current protected low dropout voltage circuits |
| 01/07/1998 | CN1169799A Electrostatic discharge circuit for high speed, high voltage cricuit |
| 01/06/1998 | US5706187 Switching power source circuitry having a current bypass circuit |
| 01/06/1998 | US5706160 Surge protector module |
| 01/06/1998 | US5706158 Method for short-circuit current limiting on an electrical power transmission line and configuration for short-circuit limiting |
| 01/02/1998 | DE19636932C1 Automobile relay with short-circuit protection |
| 12/30/1997 | US5703769 For coupling a load to a power source |
| 12/30/1997 | US5703451 Motor driving circuit |
| 12/24/1997 | WO1997049156A1 Electrical apparatus with a variable circuit protection device |
| 12/23/1997 | CA2072419C Thermal response switch and a surge absorbing circuit using the same |
| 12/23/1997 | CA2028055C Overload protector for telecommunications systems |
| 12/18/1997 | WO1997048159A1 Method of protecting a system or an installation from surge and voltage clamping circuit |
| 12/18/1997 | DE19623541A1 Verfahren zum Schutz eines Netzes oder einer Anlage vor Ueberspannungen sowie Spannungsbegrenzungsschaltung Method for protecting a network or an investment against overvoltages and voltage limiting circuit |
| 12/17/1997 | EP0812487A1 Protective circuit for series-connected power semiconductors |
| 12/17/1997 | CN2271060Y Outdoor safety device for telecommunication system |
| 12/16/1997 | US5699219 Ground fault current limiter and method of limiting ground fault current |
| 12/10/1997 | CN2270307Y Reusable distributing frame protecting unit |
| 12/09/1997 | US5696659 Overcurrent protective circuit and semiconductor device |
| 12/09/1997 | US5696391 Overload protection circuit |
| 12/04/1997 | WO1997045905A1 An installation for power transmission by means of high-voltage direct current, comprising device for detection of a permanent ground fault |
| 12/04/1997 | DE19631439C1 Tubular high temperature superconductor arrangement |
| 12/02/1997 | US5694285 Overcurrent automatic prevention apparatus having an individual fault display and permanent ground functions |
| 12/02/1997 | US5694283 Intrinsically safe power source |
| 12/02/1997 | US5694279 Superconductive fault current limiters |
| 12/02/1997 | CA2063654C Surge absorber for protection of communication equipment connected to communication lines |
| 11/27/1997 | DE19721103A1 System for automatic blocking of current through motor starting circuit e.g. for freezer cabinet compressor |
| 11/27/1997 | DE19620803A1 Circuit arrangement for limiting current during switching on of load e.g for motor vehicle or photovoltaic applications |
| 11/26/1997 | EP0809267A2 Circuit breaker incorporating trip coil as shunt resistor in parallel with current limiting polymer |
| 11/26/1997 | CN2269018Y High speed safeguard with failure alarm |
| 11/25/1997 | US5691872 Single line, multiple line telecommunications surge protector |
| 11/25/1997 | US5691689 Electrical circuit protection devices comprising PTC conductive liquid crystal polymer compositions |
| 11/19/1997 | CN2268331Y Automatic compensation detecting-controlling instrument of crowbar coil |
| 11/19/1997 | CN2268330Y Three-end over-voltage suppressor |
| 11/19/1997 | CN2268319Y Lightning-protected socket |
| 11/19/1997 | CN1165422A Circuit and method for protecting device series connected with capacitance |
| 11/19/1997 | CN1165420A Precision current limit circuit |
| 11/18/1997 | US5689397 Arrangement for disconnecting branches of a low voltage supply network under short circuit conditions |