| 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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| 03/29/2007 | US20070070557 Self powered gate driver system |
| 03/29/2007 | US20070069697 Control apparatus for a vehicular alternator |
| 03/29/2007 | US20070069695 Power controller for vehicle |
| 03/29/2007 | US20070068480 Method for switching off a power tool |
| 03/29/2007 | DE102006042768A1 Process to operate overload protection switch by measuring voltage drop across switch |
| 03/29/2007 | DE102006032070A1 Motorsteuerung und Motortemperaturabschätzverfahren hierfür Motor control and Motortemperaturabschätzverfahren this |
| 03/29/2007 | DE102005045284A1 Drehzahlüberwachungsvorrichtung Speed monitoring device |
| 03/28/2007 | EP1768244A1 Snubber circuit and power semiconductor device having snubber circuit |
| 03/28/2007 | EP1768222A2 Apparatus for monitoring the rotational speed |
| 03/28/2007 | EP1766747A2 Protection circuits for hybrid power systems |
| 03/28/2007 | EP1766745A1 Current protection apparatus and method |
| 03/28/2007 | CN2884640Y Wholl electronic self-resetting integrated circuit guard cell |
| 03/28/2007 | CN2884639Y Overheat protection circuit |
| 03/28/2007 | CN2884638Y Power unit phase-loss detector of high voltage converter |
| 03/28/2007 | CN1938935A Power transistor protecting circuit of motor drive circuit, motor drive circuit, and semiconductor device |
| 03/28/2007 | CN1937399A Domestic electric washing machine using variable frequency driving with embedded thermal protection |
| 03/28/2007 | CN1937383A Switch power supply, semiconductor appatatus and controlling method |
| 03/28/2007 | CN1937346A Power-supply rectifying system at direct current side with protection device |
| 03/28/2007 | CN1307768C Method and apparatus for detecting a failed thyristor |
| 03/27/2007 | US7196884 Apparatus and method for detecting the loss of a current transformer connection coupling a current differential relay to an element of a power system |
| 03/27/2007 | US7196883 Superconducting magnet system with quench protection circuit |
| 03/27/2007 | US7196585 Fast-response current limiting |
| 03/27/2007 | US7196503 Current averaging circuit for a PWM power converter |
| 03/27/2007 | US7196497 Vehicle-mounted electrical generating system in which field current of electric generator supplying power to high-voltage system is derived from supply voltage of low-voltage system |
| 03/27/2007 | US7196486 Apparatus for detecting obstacle to power regulated window |
| 03/27/2007 | US7196479 Electronic ballast having a protective circuit for a switching transistor of a converter |
| 03/22/2007 | US20070064365 Circuit arrangement for rapidly switching off low-voltage power breakers |
| 03/22/2007 | US20070064359 Motor power line break detection method in ac servo driver |
| 03/22/2007 | US20070064358 Switching power supply device, semiconductor device, and control method |
| 03/22/2007 | US20070064357 Nitrided valve metal material and method of making same |
| 03/22/2007 | US20070064354 Circuitry for portable lighting devices and portable rechargeable electronic devices |
| 03/22/2007 | US20070063677 Slip-controlled, wound-rotor induction machine for wind turbine and other applications |
| 03/22/2007 | DE19739780B4 Drehstrommotor AC motor |
| 03/22/2007 | DE102005044723A1 Switching power supply for operating e.g. measuring devices, has watch dog circuit arranged on secondary side of switching unit, and monitoring switching activity of switching units |
| 03/22/2007 | DE102005044629A1 Electric motor controlling device for e.g. motor vehicle, has monitoring unit outputting error signals during malfunction of sensor, and safety unit producing alternative motor control signals for controlling motor in quiescent state |
| 03/22/2007 | DE102005036153B4 Schutzschalteinrichtung für ein Solarmodul A protective circuit device for a solar module |
| 03/21/2007 | EP1763915A1 Control device and method for controlling an adjusting unit of a motor vehicle |
| 03/21/2007 | EP1479144A4 Method and system for external clock to obtain multiple synchronized redundant computers |
| 03/21/2007 | CN2882069Y Charge battery temp current controller |
| 03/21/2007 | CN2882068Y Switch power supply burp protection circuit |
| 03/21/2007 | CN2882067Y Digital setted three-phase electric machine protector |
| 03/21/2007 | CN2882063Y Power wire access equipment with protection device |
| 03/21/2007 | CN2881981Y Fuse device for cylindrical battery |
| 03/21/2007 | CN2881756Y Automatic switching device for double-voltage |
| 03/21/2007 | CN1934762A Cordless power tool with tool identification circuitry |
| 03/21/2007 | CN1933319A Current controller and method |
| 03/21/2007 | CN1933270A 输电线路距离保护方法 Transmission line distance protection methods |
| 03/21/2007 | CN1933269A Single-phase asynchronous motor protector |
| 03/21/2007 | CN1933268A Controllable gap for protecting transformer neutral point |
| 03/21/2007 | CN1932540A Method for differentiating electrical system oscillation and fault according to phase |
| 03/21/2007 | CN1932411A Freezing circulation device |
| 03/21/2007 | CN1306674C Automatic restoring failure method and system for converter |
| 03/21/2007 | CN1306274C On-line monitoring method for transformer |
| 03/20/2007 | US7193870 Method and apparatus for dissipative clamping of an electrical circuit |
| 03/20/2007 | US7193829 Combination current sensor and relay |
| 03/20/2007 | US7193826 Motor disconnect arrangement for a variable speed drive |
| 03/20/2007 | US7193379 Electronic circuit arrangement for switching an electrical load in a fail safe manner |
| 03/20/2007 | US7193338 Method for tapping a high voltage transmission line and substation using the same |
| 03/20/2007 | CA2510681C Device and a method for advanced protection from short circuit current |
| 03/20/2007 | CA2484690C Electronic high intensity discharge lamp driver |
| 03/15/2007 | WO2007029595A1 Discharge lamp drive control circuit |
| 03/15/2007 | WO2006073906A3 Faulted current indicator |
| 03/15/2007 | WO2005094523A3 Switched-capacitor power supply system and method |
| 03/15/2007 | US20070057648 Voltage control apparatus for electric generator of vehicle |
| 03/15/2007 | DE3607014B4 Schaltungsanordnung zur pulsbreitenmodulierten Ansteuerung eines Gleichstrommotors Circuit arrangement for the pulse-width-modulated driving of a DC motor |
| 03/15/2007 | DE102005046063B3 Semiconductor power module with excess current protection unit has fuse unit surrounded by explosion protection material connected across conductive tracks by narrower leads than power semiconductor |
| 03/15/2007 | DE102005043743A1 Electrical energy supply releasing/blocking device for motor vehicle, has switching unit switchable independent of supply switching unit and provided in electrical supply path, where unit controls safety-relevant rotation direction of motor |
| 03/15/2007 | DE102005041604A1 Vorrichtung mit wenigstens einem Doppelschichtkondensator A device with at least one double layer capacitor |
| 03/14/2007 | EP1763041A1 Coaxial surge arrester |
| 03/14/2007 | EP1762001A1 Circuit arrangement and method for adjusting the power input of a load which can be operated on a direct current supply network |
| 03/14/2007 | EP1761986A1 Method and device for detecting a blockage of a dc motor |
| 03/14/2007 | EP1761985A1 Control device and method for controlling an adjusting device of a motor vehicle |
| 03/14/2007 | CN2879532Y Motor electricity-saving protector |
| 03/14/2007 | CN2879525Y Module electric power short protection device |
| 03/14/2007 | CN2879504Y Simple type multifunctional distribution automatic system |
| 03/14/2007 | CN2879496Y Gas blast proof motor automatic arc-eliminating control device |
| 03/14/2007 | CN1930677A Semiconductor integrated circuit device and switching power source device using the same |
| 03/14/2007 | CN1929291A Failure detecting device for a load driving system |
| 03/14/2007 | CN1929286A Method for controlling supply of current and static capacitance to compressor |
| 03/14/2007 | CN1929238A Control device for speed transmission self-charging of electric vehicle |
| 03/14/2007 | CN1929231A The device for protecting over voltage of AC and method for controlling the same |
| 03/14/2007 | CN1929230A Method and apparatus for conditional response to a fault condition in a switching power supply |
| 03/14/2007 | CN1929229A New magneting inrush current recognition method adapted for large-scale power transformer additional with phase discrimination |
| 03/14/2007 | CN1928763A Monitoring device for main transfer wind cooling system and its working method |
| 03/14/2007 | CN1928759A System and method for analog control of directional motors and other loads |
| 03/13/2007 | US7190210 Switched-capacitor power supply system and method |
| 03/13/2007 | US7190207 One way conductor |
| 03/13/2007 | US7190149 Method and apparatus for determining actual reactive capability curves |
| 03/13/2007 | US7190138 Failure monitor for motor drive control system |
| 03/13/2007 | CA2452377C Relay-to-relay direct communication system in an electric power system |
| 03/08/2007 | WO2007027598A1 Method and system for through fault detection in electrical devices |
| 03/08/2007 | WO2007027141A1 Wind mill power flow control with dump load and power converter |
| 03/08/2007 | WO2006131533A3 Arrangement provided with a recording device |
| 03/08/2007 | US20070053215 AC/DC converter capable of actively restraining an inrush current |
| 03/08/2007 | US20070053116 Quench detection method and apparatus of superconductive conductor |
| 03/08/2007 | US20070053115 Linear voltage regulator with improved responses to source transients |
| 03/08/2007 | DE202006018837U1 Elektrowerkzeug mit Schutzschaltung Power tools with protective circuit |
| 03/08/2007 | DE19959793B4 Differentialschutzverfahren Differential protection method |
| 03/08/2007 | CA2559291A1 Power converter |
| 03/07/2007 | EP1760857A2 Quench detection method and apparatus of superconductive conductor |