| Patents for H02H 7 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions (32,726) |
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| 03/17/1993 | CN2128426Y Supply protection box for three-phase motor |
| 03/16/1993 | US5195007 Engine-driven power generating system |
| 03/16/1993 | US5194801 Power generation system with transient suppressor |
| 03/09/1993 | US5192901 For driving an electric motor load |
| 03/09/1993 | US5192894 Device for the suppression of arcs |
| 03/06/1993 | CA2071397A1 Control apparatus for detecting and commutating fault currents in an alternator-fed dc power supply |
| 03/02/1993 | US5191501 Fast lamp current limiting apparatus and method |
| 02/24/1993 | EP0528163A1 Device for suppressing arcing |
| 02/24/1993 | EP0528102A2 Protection circuit in inverter for refrigerators |
| 02/23/1993 | US5189350 Monitoring the instantaneous operating capacity of rated electric motor |
| 02/18/1993 | WO1993003530A1 Process and arrangement for recognizing defects in power converters |
| 02/18/1993 | DE4127047A1 Overload monitoring circuit for electromotor-driven closures - generates reopening signal in response to detection of residual aperture below stored min. value |
| 02/18/1993 | DE4126385A1 Limiting current esp. in large sync. generator - antiphase clocking of analogue transistor switches in memory circuit simulating thermal behaviour of machine |
| 02/18/1993 | CA2114543A1 Process and arrangement for recognizing defects in power converters |
| 02/16/1993 | US5187426 Device for limiting the terminal voltage in an alternator |
| 02/10/1993 | EP0324012B1 Shorted-coaxial-cable detector for local-area networks |
| 02/09/1993 | US5185685 Field sensing arc detection |
| 02/04/1993 | DE3051191C2 Drive circuit for bidirectional motor |
| 02/03/1993 | EP0525959A1 Switching circuit for over-voltage protection |
| 02/03/1993 | EP0525788A1 Command device for electric windows, in particular for automobiles |
| 02/03/1993 | EP0525744A1 Circuit for preventing overcharge and overdischarge of secondary batteries |
| 02/03/1993 | EP0525575A2 Control circuit for an electric motor of a household electrical appliance, in particular a washing machine, dishwasher or the like |
| 02/03/1993 | EP0270622B1 Electronic control system, in particular for a printer |
| 01/28/1993 | DE4124344A1 Current monitor for LV lighting systems - has reference value forming circuit producing at least one level varying according to supply voltage |
| 01/27/1993 | CN1068448A Multifunctional motor protecting circuit |
| 01/26/1993 | US5182507 Stepping motor driving circuit having failsafe function |
| 01/21/1993 | DE4123813A1 Overvoltage protection circuit for gate-turn-off thyristor regulator - uses SCR thyristors with series resistances for limiting received current |
| 01/19/1993 | US5180641 Battery cell bypass circuit |
| 01/19/1993 | CA1312941C Protective relay with selective phase selection for double lines |
| 01/14/1993 | DE4135870C1 Overcurrent and short circuit protection circuitry for inverter - provides four gate-controlled power semiconductor switches for each phase lead |
| 01/13/1993 | EP0433328B1 Electrical supply control system for a motor vehicle |
| 01/12/1993 | USRE34159 Electric motor controllers |
| 01/12/1993 | US5179510 Power converting apparatus capable of suppressing a fault current |
| 01/12/1993 | US5179494 Excess voltage protection apparatus for an electric vehicle |
| 01/12/1993 | US5179493 Multiple power supply system |
| 01/12/1993 | US5179337 Over-discharge protection for rechargeable batteries |
| 01/12/1993 | US5179290 System of maintaining clean electrical contacts |
| 01/07/1993 | EP0521260A1 Procedure and device for switching off an overcurrent at an inverter circuit |
| 01/07/1993 | EP0521017A1 Arc diverter. |
| 01/07/1993 | DE4221876A1 Improved protection circuit for superconducting coils during quenching - uses shunting switch operated by controller reacting to current change in superconducting coil |
| 01/07/1993 | DE4119941A1 Protecting drive motor of electrical power tool - controlling zero voltage releaser and excess current releaser by drive current |
| 01/05/1993 | US5177426 Over-discharge protection circuitry |
| 01/05/1993 | US5176011 Clothes washing machine |
| 12/30/1992 | EP0520859A1 Method and device for measuring of wind forces on a rotating system |
| 12/30/1992 | CN1019723B Electric interlocking loop for switching device |
| 12/29/1992 | US5175676 Improved short-circuit protection for dc/ac power converters |
| 12/29/1992 | US5175412 Electrical control system for an electrically heated window in motor vehicle |
| 12/28/1992 | CA2072388A1 Method and apparatus for measuring wind-related forces on a turning system |
| 12/23/1992 | EP0519249A2 Apparatus for detecting short-circuit for use in bi-polar d.c. transmission system |
| 12/23/1992 | EP0472647A4 Voltage stress alterable esd protection structure |
| 12/22/1992 | US5173848 Motor controller with bi-modal turnoff circuits |
| 12/22/1992 | CA1311828C Positive sequence distance relay for ac power transmission line protection |
| 12/18/1992 | WO1992022950A1 Ac voltage clipper in mos-technology |
| 12/18/1992 | CA2101442A1 Ac voltage clipper in mos-technology |
| 12/15/1992 | US5172329 Microprocessor-based digital protective relay for power transformers |
| 12/10/1992 | WO1992022117A1 Protection system for superconductive winding of magnetic circuit |
| 12/10/1992 | DE4119007A1 Current limit circuit for electric motor pref. controlled by switching transistor - has at least one barrier resistance connected in series with motor winding to limit current to value compatible with transistor |
| 12/09/1992 | CN2124527U Antiscintillating power-saving autocontrolling cabinet for secondary starting of motor |
| 12/08/1992 | US5170310 Fail-resistant solid state interruption system |
| 12/08/1992 | US5170308 Method and system of transformer protection and method and system of detecting a defective winding |
| 12/08/1992 | US5170108 Motion control method and apparatus for motorized window blinds and and the like |
| 12/08/1992 | US5170106 Method of protecting motor against overload and motor control device |
| 12/08/1992 | US5170070 Switching power supply and adapter for switching power supply |
| 12/02/1992 | EP0515961A1 Circuit for controlling an AC |
| 12/02/1992 | CN1066754A Inverter arrangement and ac motor driving system |
| 12/02/1992 | CN1019344B Protective circuit of high-power darlington transistors |
| 12/01/1992 | US5168416 Automatic flashover protection for locomotive traction motors |
| 12/01/1992 | US5168415 Motor control method |
| 11/26/1992 | WO1992020891A1 A motor reverse system |
| 11/25/1992 | EP0515024A2 Circuit bypass device |
| 11/24/1992 | US5166586 Automatic window/door system |
| 11/24/1992 | CA1310691C Battery charging system |
| 11/24/1992 | CA1310690C High capacity capacitor type electrical energy accumulator |
| 11/24/1992 | CA1310688C Operational method and control switching apparatus for monitoring the starting-cycle circuit of electric high-voltage motors with asynchronous start-up |
| 11/19/1992 | EP0514064A2 Apparatus and method for eliminating false current limit triggering in a grounded source/emitter power switching circuit |
| 11/19/1992 | EP0513344A1 Fail-resistant solid state interruption system |
| 11/19/1992 | DE4116407A1 Electronic control circuit for vacuum cleaner motor - uses microprocessor reading required motor direction and approach of full dust-bag condition with optical coupler to motor |
| 11/19/1992 | DE4116318A1 Protection circuit for accumulator against excessive discharge - uses three MOS transistors and potential dividers to block load current when battery voltage falls to low |
| 11/18/1992 | CN1066353A Polling for detection of power supply or other failures of digital circuit |
| 11/17/1992 | CA1310357C Overvoltage protective circuit |
| 11/12/1992 | DE4115295A1 Load current monitoring circuit with overload and short-circuit protection - uses current-voltage converter supplying overload and short-circuit detectors |
| 11/11/1992 | EP0512631A2 Circuit for protection against the increase of the output current for an integrated circuit comprising a power device driving a resonant load connected to a power supply |
| 11/11/1992 | EP0512531A2 Inverter arrangement and AC motor driving system |
| 11/11/1992 | EP0512340A1 Overcharge preventing device and overdischarge preventing device for a secondary battery |
| 11/11/1992 | CN1066154A Three-phase electric motor phase-defect and leakage of electricity protector |
| 11/11/1992 | CN1019068B General protective circuit for electric motor |
| 11/10/1992 | US5162710 Trigger circuit with blocking protection device for a collectorless dc motor |
| 11/04/1992 | CN2121092U Three-phase ac. contacting apparatus with open-phase protect |
| 11/04/1992 | CN1018972B Asynchronous motor protector for break, overload and short circuit |
| 11/03/1992 | US5160881 Alternator for a motor vehicle having a ventilator and device for monitoring and a controlling the ventilator |
| 10/31/1992 | CA2041473A1 Method and means for suppressing geomagnetically induced currents |
| 10/29/1992 | WO1992018999A1 Garage door operator safety apparatus |
| 10/29/1992 | DE4114617C1 Overcurrent protective circuitry for switchable semiconductors in bridge circuit - operates threshold value switch if measured actual valve of current exceeds max. valve to control separate control modules assigned to each semiconductor |
| 10/28/1992 | CN2120401U Multi-function protector for three-phase motor |
| 10/28/1992 | CN2120400U Protection for source phase interruption |
| 10/28/1992 | CN2120399U Three-phase electric machine quasi-harmonic efficient electricity-economizer |
| 10/27/1992 | US5159257 Vehicle power supply apparatus for protecting a battery from excessive discharge |
| 10/27/1992 | US5158436 Pump with speed controller responsive to temperature |
| 10/21/1992 | EP0509348A2 Procedure for the protection of an electrical sink, controlled by the principle of phase-angle control and equipment for executing the procedure |
| 10/21/1992 | CN1065560A Distribution equipment for beam-pumping unit |