Patents for H02H 9 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection (21,232) |
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02/07/1995 | CA1334300C Polymer housed electrical assemblies using modular construction |
02/02/1995 | WO1995003645A1 Process and arrangement for limiting short circuit current on an electric energy transmission line |
02/02/1995 | DE4419945A1 Protection device against earth shorts in high-voltage three-phase networks |
02/02/1995 | CA2168025A1 Method for short-circuit current limiting on an electrical power transmission line, and an arrangement for short-circuit limiting |
02/01/1995 | EP0637118A1 Circuit for limiting inrush current and overvoltage of an electronic ballast |
01/25/1995 | EP0635923A1 Circuit for protection against high energy overvoltages with controlled voltage clipping |
01/25/1995 | EP0611495A4 Dual voltage power supply. |
01/24/1995 | US5384529 Current limiting circuit and method of manufacturing same |
01/24/1995 | US5384492 Protective system for insertion/extraction of PC boards in a powered-up environment |
01/17/1995 | US5383081 Live insertion circuit |
01/17/1995 | US5382888 Focusing device with two dynamic windings for energy recovery |
01/12/1995 | WO1995001668A1 Method and apparatus for protecting an electric circuit |
01/12/1995 | WO1995001667A1 A protection device using field effect transistors |
01/12/1995 | CA2166418A1 A protection device using field effect transistors |
01/11/1995 | EP0633640A2 An earth leakage unit |
01/11/1995 | EP0633580A1 Power surge resistor pastes |
01/10/1995 | US5381296 Short circuit limiting protector |
01/10/1995 | US5381031 Semiconductor device with reduced high voltage termination area and high breakdown voltage |
01/05/1995 | DE4418050A1 Hollow cylindrical, high-temperature superconductor and its use |
01/04/1995 | EP0632560A2 Semiconductor integrated circuit device equipped with protective system for directly discharging surge voltage from pad to discharging line |
01/04/1995 | EP0616728A4 Scr protection structure and circuit with reduced trigger voltage. |
01/03/1995 | US5379178 Method and device for triggering an electromagnetic consumer |
01/03/1995 | US5379177 Transient voltage surge suppressor with I2 R/I2 T overcurrent protection switch |
01/03/1995 | US5379176 Protective input circuit for an instrument |
01/03/1995 | US5379022 Thermistor device with extended operating range |
01/03/1995 | US5379020 High-temperature superconductor and its use |
12/28/1994 | EP0630533A1 A short-circuit limiting protector |
12/27/1994 | US5377067 Junction box with protection function to protect from overvoltage and overcurrent |
12/20/1994 | US5375030 Surge protection device and system |
12/20/1994 | US5374887 Inrush current limiting circuit |
12/14/1994 | EP0629030A1 Electrical safety barriers |
12/10/1994 | CA2122763A1 Telephone line overvoltage protection apparatus |
12/07/1994 | EP0627121A1 Charged particle generation |
12/06/1994 | CA1333408C Electronic ballast circuit for fluorescent lamps |
11/30/1994 | EP0626744A1 Current limiting device between an electronic board and a power supply |
11/29/1994 | US5369626 Lightning protection for seismic data acquisition system |
11/29/1994 | US5369543 Thyristor fail-safe device |
11/29/1994 | CA2031508C Ignition prevention of electronic element through use of thermocontractive insulating tube |
11/24/1994 | WO1994027350A1 Protection against lightning surges on power lines |
11/24/1994 | DE4317191A1 Method for dissipating damaging overvoltages, as well as an arrangement for carrying out the method |
11/23/1994 | EP0625289A1 Shunt circuit for electrostatic discharge protection |
11/22/1994 | US5367569 Network interface modules |
11/22/1994 | CA1333191C Power line surge suppressor |
11/22/1994 | CA1333190C Fault current limiter |
11/22/1994 | CA1333189C Protection circuit for battery feed circuit |
11/17/1994 | EP0624943A1 Serial current limiting device |
11/15/1994 | US5365420 High efficiency intrinsically safe power supply |
11/10/1994 | DE4315170A1 Circuit arrangement for influencing inrush current (switching-on current) |
11/09/1994 | EP0623984A1 Coupling circuit for a measuring instrument |
10/27/1994 | WO1994024752A1 Modular thyristor controlled series capacitor control system |
10/27/1994 | DE4312764A1 Detection device for identifying the remanence level in the core of a transformer |
10/27/1994 | DE4310233A1 Protection circuit for inductive loads |
10/26/1994 | EP0621692A2 Overvoltage protection circuitry |
10/26/1994 | EP0621678A1 Overvoltage protection circuit |
10/26/1994 | EP0621148A2 Air-conditioning apparatus for electric vehicle |
10/26/1994 | EP0621146A2 Electric car air-conditioning apparatus |
10/25/1994 | US5359657 Telephone line overvoltage protection apparatus |
10/25/1994 | US5359318 Hand-held electronic apparatus using two batteries sequentially supplying current to inductive element |
10/25/1994 | CA1332752C Telephone lines overvoltage protection apparatus |
10/19/1994 | EP0620630A1 Superconducting fault current limiter |
10/19/1994 | EP0620570A1 Superconducting fault current limiter |
10/18/1994 | US5357568 Telephone line overvoltage protection method and apparatus |
10/12/1994 | EP0619637A1 Protection of an automobile three-phase alternator |
10/12/1994 | EP0477367B1 Device for preventing inrush current from flowing into electric apparatus |
10/12/1994 | CN1093497A Overvoltage limiter operated by capacitor bank |
10/11/1994 | US5355275 Current limiting device for electromagnetic coil employing gap containing superconductive shield |
10/11/1994 | US5355025 Active power line conditioner with synchronous transformation control |
10/06/1994 | DE4310748A1 Switching controller |
10/05/1994 | EP0543826B1 Process and device for driving an electromagnetic consumer |
10/05/1994 | CN2178956Y Safety device for electrical equipment of household |
10/04/1994 | US5353189 Surge protector for vehicular traffic monitoring equipment |
09/29/1994 | WO1994022197A1 Arrangement for disconnecting branches of a low voltage supply network under short circuit conditions |
09/29/1994 | WO1994022157A1 Solid state circuit breaker |
09/28/1994 | EP0617499A1 Power supply circuit |
09/28/1994 | EP0616728A1 Scr protection structure and circuit with reduced trigger voltage. |
09/22/1994 | DE4308986A1 Protective circuit breaker |
09/20/1994 | CA1332074C Surge protection device |
09/20/1994 | CA1332073C Surge suppression module |
09/14/1994 | CN1092213A A shortcircuit limiting protector |
09/13/1994 | US5347571 X-ray tube arc suppressor |
09/13/1994 | US5347104 Heater control circuit |
09/13/1994 | CA1331999C Voltage regulators for permanent magnet alternators |
09/08/1994 | DE4342592C1 Current limiting device |
09/08/1994 | DE4331250C1 Device for limiting the inrush current in a load circuit |
09/07/1994 | EP0614298A2 Bussystem protected against the uncoupling of earth connections |
09/06/1994 | US5345359 Process for the reduction of the switch-on surge in current during the operation of an inductive load |
09/06/1994 | US5345212 Power surge resistor with palladium and silver composition |
09/06/1994 | US5345114 Superconductor logic and switching circuits |
09/01/1994 | WO1994019862A1 Electrical damping circuit for damping power signal resonance in a power distribution network |
09/01/1994 | DE4306117A1 Starting-current limiter for fluorescent lamps |
08/31/1994 | EP0613226A1 Disconnector for surge arrester |
08/30/1994 | US5343381 Electrical dampening circuit for dampening resonance of a power signal in a power distribution network |
08/30/1994 | US5343352 Integrated circuit having two circuit blocks energized through different power supply systems |
08/30/1994 | CA1331783C Surge absorber |
08/30/1994 | CA1331782C Temperature compensated thermal protector |
08/24/1994 | EP0611495A1 Dual voltage power supply. |
08/23/1994 | US5341282 Circuit for detecting short-circuiting of inductive load drive devices |
08/23/1994 | CA2026789C Power feed circuit for digital communications terminal equipment |
08/18/1994 | WO1994018736A1 Overcurrent protective circuit and semiconductor device |
08/17/1994 | EP0610898A1 Overvoltage protection device |