| 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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| 05/12/1999 | CN1216412A Electric motor with means for preventing thermal overload |
| 05/12/1999 | CN1043393C Method and apparatus for preventing excessive current flow in motor |
| 05/11/1999 | US5903424 Method for protecting an integrated circuit against electro-static discharges |
| 05/11/1999 | US5903422 Overcurrent sensing circuit for power MOS field effect transistor |
| 05/11/1999 | US5903417 Self-excitation type switch power supply unit with overcurrent protection |
| 05/11/1999 | US5903130 Controller for a starter/generator used with an engine |
| 05/11/1999 | US5903121 Apparatus for triggering a DC motor with a protective circuit preventing substrate currents |
| 05/06/1999 | WO1999021745A1 Circuit configuration to monitor a regulated output voltage in a motor vehicle |
| 05/06/1999 | WO1999013560A3 Precharging circuit for a capacitor connected to the output of a line-commutated power converter |
| 05/06/1999 | WO1999007971A3 System and related methods for detecting and measuring the operational parameters of a garage door |
| 05/06/1999 | WO1999005537A3 In-situ fault detection apparatus and method for an encased energy storing device |
| 05/06/1999 | EP0913920A2 Switchting regulator having high current prevention features |
| 05/06/1999 | EP0847611B1 Sharing arrangement for surge protection circuitry |
| 05/06/1999 | DE19844956A1 Fault diagnosis circuit for a bridge circuit |
| 05/05/1999 | CN1043280C Overcurrent feed preventing device |
| 05/04/1999 | US5899021 Awning window |
| 04/29/1999 | DE19749698A1 Over-load and short-circuit protection circuit arrangement for power distribution network |
| 04/28/1999 | EP0910883A1 Method for controlling the closing process of closing devices with at least one part moved by an electromotor |
| 04/28/1999 | EP0910718A1 Process for limiting the excess force of an electrically controlled aggregate actuated by an external force when it nears its top or bottom stop positions, in particular for a motor vehicle window lifter nearing its closure position |
| 04/28/1999 | EP0803144A4 Protection system for a shorted rectifying diode within a synchronous generator |
| 04/28/1999 | CN1215508A Device including a thermally protected switching transistor |
| 04/27/1999 | US5898580 Dc/dc converter with a protection circuit |
| 04/27/1999 | US5898577 Wireless transmitter |
| 04/27/1999 | US5898557 Switching apparatus |
| 04/27/1999 | US5898556 Protection system for a three-phase distribution transformer insulated in a liquid dielectric |
| 04/27/1999 | US5898293 Method of preventing battery over-discharge and a battery pack with a battery over-discharge prevention circuit |
| 04/27/1999 | US5898289 Motor start-up circuit with a triac and PTC thermistors |
| 04/27/1999 | CA2175137C Power window circuit board overcurrent protection |
| 04/27/1999 | CA2111069C Control system for powering plural inductive loads from a single inverter source |
| 04/22/1999 | WO1999019968A1 Synchronous machine |
| 04/22/1999 | WO1999019963A1 Rotating electric machine |
| 04/22/1999 | WO1999019781A1 Method and circuit for monitoring the operating condition of electric motors |
| 04/22/1999 | DE19745490A1 Electric motor operation monitoring method |
| 04/22/1999 | CA2305421A1 Synchronous machine |
| 04/21/1999 | EP0910150A2 Circuit device and method for safe monitoring of the controllability of electric motors |
| 04/21/1999 | EP0910149A1 Protective relay system |
| 04/21/1999 | EP0910104A1 Security device for an electrochemical battery |
| 04/21/1999 | CN2315694Y Multifunctional protector for motor |
| 04/21/1999 | CN2315693Y Protector for motor load dropping and starting control circuit |
| 04/21/1999 | CN2315692Y Three phase voltage protector for automobile generator |
| 04/21/1999 | CN2315656Y Non full phase and large slip asynchronous operation overvoltage protector for generator |
| 04/21/1999 | CN2315641Y Discharge coil special for parallel capacitor banky |
| 04/20/1999 | US5896302 System and method for providing integrated reclosing of circuit breakers in a power substation |
| 04/20/1999 | US5896261 Power down protection circuit for an electronic device |
| 04/20/1999 | US5896257 Two sensor for over-current protection and current sensing configuration motor control |
| 04/20/1999 | US5896057 Diagnostic power driver circuit |
| 04/20/1999 | US5896025 Secondary battery protection device from overcharge/overdischarge |
| 04/20/1999 | US5895979 Power distribution network incorporating a voltage support transformer and process of use |
| 04/20/1999 | US5894736 Methods and apparatuses for detecting surge in centrifugal compressors |
| 04/14/1999 | EP0909000A1 Protection device for a capacitor bank |
| 04/14/1999 | EP0908999A1 Stepper motor with stalling detection |
| 04/14/1999 | EP0908998A1 Safety method and apparatus for resistive start of electromotors |
| 04/14/1999 | EP0801832A4 Detection and isolation circuit for a failed bridge power rectifier and an electrical system employing same |
| 04/14/1999 | CN2314506Y Computer protection device for electric motor |
| 04/14/1999 | CN1213888A Fault diagnosis circuit |
| 04/14/1999 | CN1042990C Power converter protective appts. |
| 04/08/1999 | WO1999017414A1 Method for detecting and disconnecting a jammed or overloaded permanently excited direct current engine |
| 04/08/1999 | DE19813143A1 Emergency switching system for motors, e.g. for use in robots and machine tools |
| 04/08/1999 | DE19745597A1 Control and regulation of vehicle windows |
| 04/08/1999 | DE19743632A1 Method to detect faulty power semiconductor switch in power converter circuit |
| 04/08/1999 | DE19743234A1 Verfahren zur Erkennung und Abschaltung eines blockierten oder überlasteten permanenterregten Gleichstrommotors A method for detection and control of a blocked or congested permanent magnet DC motor, |
| 04/07/1999 | CN2313320Y Electronic over-current protector |
| 04/07/1999 | CN2313319Y Phase-shortage protection starting controller for three-phase electric appliance |
| 04/07/1999 | CN2313317Y Improved broadcating loudspeaker for alarming |
| 04/06/1999 | US5892669 Electronic products with improved surge protecting circuit |
| 04/06/1999 | US5892645 Protection system for power receiving station |
| 04/06/1999 | US5892351 DC-isolated converting battery module |
| 04/06/1999 | US5892343 Windshield wiper arrangement |
| 04/06/1999 | US5892342 Self-test circuit for a shorted diode protection panel in a diesel electric locomotive |
| 04/06/1999 | US5890780 Power supply switching apparatus with protection function for supplying power to an electronic circuit via an external power source or an internal power supply source |
| 03/31/1999 | EP0905850A2 Control for an electric motor driven by two phase mains |
| 03/31/1999 | EP0904549A1 Method and device for testing differential protection relays or differential protection relay systems |
| 03/31/1999 | EP0739545B1 Circuit arrangement |
| 03/31/1999 | CN2312537Y Phase interruption and over current protective arrangement for electric machine |
| 03/31/1999 | CN1212491A Semiconductor apparatus for use in low voltage power supply |
| 03/30/1999 | US5889376 Motor driving apparatus |
| 03/30/1999 | CA2248740A1 A procedure and a circuit for identifying and switching off a jammed or overloaded permanently excited d.c. motor |
| 03/25/1999 | WO1999014835A1 Control system using an electric motor |
| 03/25/1999 | DE19816837A1 Electric motor drive |
| 03/25/1999 | DE19741629A1 Automobile windscreen wiper mechanism |
| 03/24/1999 | EP0903459A1 Window opening and closing apparatus |
| 03/24/1999 | EP0903279A2 Electric power steering apparatus |
| 03/24/1999 | EP0902998A1 Transformer with protection device |
| 03/24/1999 | CN2311889Y Controller for electric machine |
| 03/24/1999 | CN2311878Y Automatic controlling device for electrical machine protection |
| 03/24/1999 | CN2311877Y Electric machine chamber-sweeping protector |
| 03/24/1999 | CN2311876Y Shaft clamp lever type electric motor chamber-sweeping protector |
| 03/24/1999 | CN2311875Y Single-phase electric motor protector |
| 03/24/1999 | CN2311866Y Mine anti-explosive switch |
| 03/24/1999 | CN2311855Y Anti-mistrip overcurrent protection controller |
| 03/24/1999 | CN1211851A Control system for three-phase motor |
| 03/24/1999 | CN1042684C DC power supply circuit |
| 03/23/1999 | US5886861 Apparatus providing response to arc faults in a power distribution cable protected by cable limiters |
| 03/18/1999 | WO1999013565A1 Three-phase motor |
| 03/18/1999 | WO1999013560A2 Precharging circuit for a capacitor connected to the output of a line-commutated power converter |
| 03/18/1999 | WO1999013548A1 Short-circuit current limiter for a converter circuit with a capacitive accumulator |
| 03/17/1999 | EP0901698A1 Ground fault protection circuit for a multiple source system |
| 03/16/1999 | US5883479 BEMF rectification during power off to prevent parasitic effect |
| 03/15/1999 | CA2247077A1 Apparatus providing response to arc faults in a power distribution cable protected by cable limiters |
| 03/11/1999 | WO1999012253A1 Improved single-phase induction motor safety controller |