| 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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| 08/06/2009 | US20090195942 Effect of a loss of a reactive impedance of a transformer, when secondary windings of the transformer are short circuited. The Method and the Device for a reduction of a short circuit currents |
| 08/06/2009 | US20090195228 Microprocessor die with integrated voltage regulation control circuit |
| 08/06/2009 | US20090195199 Motor drive device |
| 08/06/2009 | US20090193923 Motor control apparatus |
| 08/06/2009 | DE102009004853A1 Inverter system for vehicle, has primary stage and secondary stage that define resistant point for discharging leakage current corresponding to generation of high direct current voltage |
| 08/06/2009 | DE102008008201A1 High-voltage generator for voltage supply of air ionization device, has monitoring device for separately monitoring output current, where generator is automatically disconnectable during excess of maximum value of output current |
| 08/06/2009 | DE102008007563A1 Circuit arrangement for e.g. monitoring tachometer that is used for detecting speed of motor of washer dryer, has control terminal connected with voltage source by switching resistance that has high resistance than ohmic resistance |
| 08/05/2009 | EP2086103A2 Method and apparatus for stopping servo motor |
| 08/05/2009 | EP2084548A1 Flashover analysis tool |
| 08/05/2009 | CN201286068Y Wave flexibly controlled high-frequency soft switching square wave inverting power source |
| 08/05/2009 | CN201286023Y Solar photovoltaic controller |
| 08/05/2009 | CN201286013Y Voltage protecting circuit and television set having the circuit |
| 08/05/2009 | CN201286012Y Protection apparatus for motor relay on automobile production line |
| 08/05/2009 | CN201286011Y Low voltage motor protection controller |
| 08/05/2009 | CN201286010Y Combined motor control apparatus |
| 08/05/2009 | CN201286009Y Vacuum electromagnetic starter for speed governing flame proof dual speed motor for mining |
| 08/05/2009 | CN201286008Y Load switch protecting apparatus |
| 08/05/2009 | CN101501953A Switch and motor assembly |
| 08/05/2009 | CN101501952A Overload prevention device for permanent magnet DC motors |
| 08/05/2009 | CN101501799A Signal generation unit and method to generate a data signal in a control unit of a power system device |
| 08/05/2009 | CN101501601A System and method for driving a power field-effect transistor (FET) |
| 08/05/2009 | CN101499720A Pulse width modulation controller and control method thereof |
| 08/05/2009 | CN101499719A Pulse width modulation controller and control method thereof |
| 08/05/2009 | CN101499657A Remote wired, wireless wideband network and electrical power system |
| 08/05/2009 | CN101499655A Neutral point grounding resistor plant for electrical power system |
| 08/05/2009 | CN101499651A Fast acting method for microcomputer type relay protection |
| 08/05/2009 | CN101499650A Small current earthing wire selection protection apparatus and protection method based on GPRS |
| 08/05/2009 | CN101499649A Networking bus bar protecting method based on GOOSE mode |
| 08/05/2009 | CN101499648A Semiconductor device for protecting secondary battery, battery pack, and electronic device using same |
| 08/05/2009 | CN101499647A Dual core controlled three-phase reversible converter failure diagnosis system and working method thereof |
| 08/05/2009 | CN101499646A Automatically temperature compensating average value over-current protection circuit |
| 08/05/2009 | CN101499645A Monitoring type motor protector |
| 08/05/2009 | CN101499644A Under-voltage protection circuit with low starting current |
| 08/05/2009 | CN101499544A Battery apparatus, protection circuit, temperature monitoring method and temperature sensor laying method |
| 08/05/2009 | CN101499355A Magnet protection system for power fail of electromagnet |
| 08/05/2009 | CN101499272A Novel electronic loudspeaker for automobile |
| 08/05/2009 | CN101496509A Motor control device of electric fishing reel |
| 08/05/2009 | CN101496508A Motor control device of electric fishing reel |
| 08/05/2009 | CN100525043C Protection circuit for a power supply unit, and power supply unit with a respective protection circuit |
| 08/05/2009 | CN100525042C Power converter |
| 08/05/2009 | CN100524999C A power testing sampling protection unit |
| 08/05/2009 | CN100524998C Low voltage latched control circuit with bi-level for improving power supply protection |
| 08/05/2009 | CN100524997C Less voltage protector |
| 08/05/2009 | CN100524139C Monitoring device for main transfer wind cooling system and its working method |
| 08/04/2009 | US7570498 Switching power supply apparatus for correcting overcurrent detection point based on gradient of switching current |
| 08/04/2009 | US7570472 Protection circuit for avoiding using of an improper alternating current power source |
| 08/04/2009 | US7570464 Overload protective apparatus of a compressor and a method thereof |
| 08/04/2009 | US7569942 Output voltage controller of engine-driven generator |
| 07/30/2009 | WO2009043186A3 Arrangement for protecting inverters comprising an intermediate voltage circuit from a bridge short-circuit |
| 07/30/2009 | US20090190380 Multi-stage switching power supply |
| 07/30/2009 | US20090190273 Ultracapacitor Overvoltage Protection Circuit With Self Verification |
| 07/30/2009 | US20090189557 Method and arrangement for controlling an electric drive |
| 07/30/2009 | DE10362205B4 Elektronische Schutzschaltung gegen Einschaltstoßströme Electronic protection circuit against inrush |
| 07/30/2009 | DE102008000147A1 Electrical drive controlling arrangement for vehicle component, has synchronous motor with electronic control unit, where autarkic energy supply for control section of unit is switchable after detection of failure in energy supply |
| 07/30/2009 | DE102008000145A1 Three-phase drive i.e. synchronous motor, controlling arrangement for power steering of vehicle, has semiconductor bridge circuit provided as star point creator of three-phase drive |
| 07/30/2009 | DE10121873B4 Verfahren zum Lenken eines Fahrzeugs A method for steering a vehicle, |
| 07/29/2009 | EP2083493A1 Overload relay and method for operating such an overload relay |
| 07/29/2009 | CN201282331Y Microcomputer protection device for electric power system |
| 07/29/2009 | CN201282330Y Small current arc-extinguishing grounding device |
| 07/29/2009 | CN201282329Y Protection device for DC constant voltage power supply |
| 07/29/2009 | CN201282328Y Motor protector with single-phase grounding protection |
| 07/29/2009 | CN101494375A PCM current differential protection relay |
| 07/29/2009 | CN101494374A Current protection control method for vacuum circuit breaker |
| 07/29/2009 | CN101494373A Energy-saving type control and protection switch electric appliance |
| 07/29/2009 | CN101494372A Electric motor stator winding temperature estimation |
| 07/29/2009 | CN101494360A Live conductor stringing and splicing method and apparatus |
| 07/29/2009 | CN100521471C DC/DC converter and decentralized power generation system comprising a DC/DC converter |
| 07/29/2009 | CN100521438C A self-check device and method of relay circuit |
| 07/29/2009 | CN100521437C Mixed integrated circuit equiped with overcurrent protector |
| 07/29/2009 | CN100521436C Transformer protection method based on double-side non-saturated region equivalent instantaneous inductor |
| 07/29/2009 | CN100521435C Controllable gap for protecting transformer neutral point |
| 07/29/2009 | CN100521434C Device for restraining AC transformer DC magnetic bias current |
| 07/28/2009 | US7567419 Apparatus, system, and method for electrostatic discharge protection |
| 07/28/2009 | US7567070 Method and apparatus to limit output power in a switching power supply |
| 07/28/2009 | US7567057 Multiple battery management system, auxiliary battery attachment system, and network controlled multiple battery system |
| 07/28/2009 | US7567050 Arrangement for operating an electrically adjustable item of furniture for sitting and/or lying upon |
| 07/23/2009 | WO2009089979A1 Parallel starting system |
| 07/23/2009 | WO2009089670A1 Method of coordinated operation for turbine-generator shafts torsional vibration protection |
| 07/23/2009 | US20090185322 Combination current sensor and relay |
| 07/23/2009 | US20090185105 Dc/ac inverter substrate having voltage abnormality detector circuit |
| 07/23/2009 | US20090184686 Battery control system and method |
| 07/23/2009 | US20090184674 Drive Apparatus for a Washing Machine |
| 07/23/2009 | US20090184673 Motor driving system and method of protecting motor driver |
| 07/23/2009 | US20090184579 Backup relay cut control system |
| 07/23/2009 | US20090184578 Adjustment of control strategy based on temperature |
| 07/23/2009 | DE202009006236U1 Fluoreszierende Lampe mit einer Überhitzungsschutzfunktion Fluorescent lamp with an overheating protection function |
| 07/22/2009 | EP1206828B1 Fault tolerant motor drive arrangement with independent phase connections and monitoring system |
| 07/22/2009 | EP1181760B1 Devices and methods for protection of rechargeable elements |
| 07/22/2009 | CN201278464Y Optical fiber current differential protection apparatus |
| 07/22/2009 | CN201278463Y Digital bus connection protection apparatus |
| 07/22/2009 | CN201278462Y Integrated electricity distribution protection apparatus for explosion preventing visual system |
| 07/22/2009 | CN201278461Y Radio frequency interference preventing mobile phone battery |
| 07/22/2009 | CN201278460Y Apparatus for detection control after motor coupling threaded rod breaking |
| 07/22/2009 | CN201278459Y Digital transformer protection apparatus |
| 07/22/2009 | CN201278458Y Protection apparatus for digital grounding transformer |
| 07/22/2009 | CN101490921A Systems and methods for maximizing the output of vehicle alternator |
| 07/22/2009 | CN101488664A Anti-island effect protection method based on output current frequency disturbance |
| 07/22/2009 | CN101488663A Over high voltage protection circuit apparatus and method thereof |
| 07/22/2009 | CN101488662A System and method for fault isolation and leakage current detection |
| 07/22/2009 | CN101488661A Adaptive determination apparatus differentiating transformer exciting surge and failure current |