| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 05/13/2009 | CN101430347A Magnetic collection feedback type optical fiber current sensor |
| 05/13/2009 | CN101428562A Method and apparatus for detecting faults in a current sensing device |
| 05/12/2009 | US7532002 Appliance terminal |
| 05/07/2009 | WO2009027373A3 Measuring and/or switching device |
| 05/07/2009 | US20090118079 Method for controlling voltage within a powertrain system |
| 05/07/2009 | US20090115400 Status indicator |
| 05/07/2009 | DE202008015367U1 Messeinrichtung zur Messung von Strömen durch Sicherungen mit zweifacher Temperaturkompensation Measuring means for measuring currents by means of fuses dual temperature compensation |
| 05/07/2009 | DE19954182B4 Elektronischer Multimeter Electronic Multimeter |
| 05/07/2009 | DE102008048870A1 Stromerfassungsschaltung und Stromerfassungsverfahren Current detecting circuit and current detecting method |
| 05/07/2009 | DE102007051794A1 Mehrphasen-Festkörper-Wattstundenzähler Multi-phase solid-watt-hour meter |
| 05/07/2009 | DE102007046347B3 Gerät zum Erfassen eines Fehlerstroms An apparatus for detecting a fault current, |
| 05/07/2009 | DE102006044653B4 Ein Gerät zum automatischen Erkennen der Batterie-Polaritäten A device for automatically detecting the battery polarities |
| 05/07/2009 | DE102006032763B4 Vorrichtung und Verfahren zur Messung eines in einem elektrischen Leiter fließenden Stromes Apparatus and method for measuring a current flowing in an electric conductor current |
| 05/07/2009 | DE102006032762B4 Verfahren zur Messung eines in einem elektrischen Leiter fließenden Stromes und Verwendung des Verfahrens sowie einer Vorrichtung zur Überwachung von Strömen im Bordnetz eines Kraftfahrzeugs A method of measuring a current flowing in an electric conductor current, and use of the method and an apparatus for monitoring currents in the electrical system of a motor vehicle |
| 05/06/2009 | EP2054287A1 Electrical safety device |
| 05/06/2009 | CN201234165Y Automatic control apparatus for power distribution system |
| 05/06/2009 | CN201234153Y DC electric power cabinet controller |
| 05/06/2009 | CN201233804Y Electromagnetic induction power supply apparatus and electric observing and control equipment |
| 05/06/2009 | CN201233442Y Rolling stock motor system and vehicle speed remote monitoring instrument |
| 05/06/2009 | CN201233429Y Earthing real-time detection apparatus for power transformer iron core |
| 05/06/2009 | CN201233425Y Multifunction electric energy meter |
| 05/06/2009 | CN201233424Y Dc fan failure testing apparatus |
| 05/06/2009 | CN201233423Y Electric network voltage detection device |
| 05/06/2009 | CN201233422Y Electric voltage detection device of frequency changer for centrifugal machine |
| 05/06/2009 | CN201233421Y Adjustable current sensor |
| 05/06/2009 | CN201233420Y Multifunction ammeter |
| 05/06/2009 | CN201233408Y Electric voltage test clamp and electricity stealing on-line searching instrument |
| 05/06/2009 | CN201231977Y On-off action locating detection apparatus for belt conveyor |
| 05/06/2009 | CN201230532Y Electric safety mosquito swatter |
| 05/06/2009 | CN101425684A Modular lightning protection device for electric power easy for replacement |
| 05/06/2009 | CN101425353A Non-residual pressure monitor for lightning arrester |
| 05/06/2009 | CN101425031A Multi voltage reference position detection circuit |
| 05/06/2009 | CN101424712A Population parameter on-line monitoring system for lightning current and work flow thereof |
| 05/06/2009 | CN101424711A Bell tone automatic detection system and method |
| 05/06/2009 | CN101424710A High frequency current detection circuit, and protection circuit including the high frequency current detection circuit |
| 05/06/2009 | CN101424709A Electric voltage disturbance detecting method and device |
| 05/06/2009 | CN100486073C Method for evaluating non-linear dynamic state with loading voltage characteristics |
| 05/06/2009 | CN100485951C Passive survey meter for electrically testing acceleration and voltage, and manufacture method thereof |
| 05/06/2009 | CN100485405C Circuit for detecting voltage and frequency of input power supply |
| 05/06/2009 | CN100485400C Device for controlling power earthing/under voltage warning and its control method |
| 05/06/2009 | CN100485397C Equipment for recording lightning stroke current intensity and occurrence time |
| 05/06/2009 | CN100485396C Method for measuring high voltage by current method and its device |
| 05/06/2009 | CN100485395C Inductance coil capable for current detection |
| 05/05/2009 | US7528734 System and method for automatically detecting power supply voltage |
| 05/05/2009 | US7528649 Method for designing input circuitry for transistor power amplifier |
| 05/05/2009 | US7528633 Current sensing circuit and boost converter having the same |
| 05/05/2009 | US7528619 0th droop detector architecture and implementation |
| 05/05/2009 | US7528593 Current measuring device |
| 05/05/2009 | US7527987 Fast localization of electrical failures on an integrated circuit system and method |
| 04/30/2009 | WO2009030994A3 Control system |
| 04/30/2009 | WO2009000236A3 High-dynamic ammeter with small time constant |
| 04/30/2009 | US20090112497 System and method for automatic voltage measurements of an electronic signal |
| 04/30/2009 | US20090108840 Power Line Sensor |
| 04/30/2009 | US20090108673 Method for determining a voltage level across an electric circuit of a powertrain |
| 04/30/2009 | DE102007050620A1 Switching arrangement for operating electrical load, comprises controlled switching element for selective connection of operating potential with connection of load, where power supply system provides supply voltage |
| 04/29/2009 | EP2052265A1 Circuit for continuously measuring discontinuous metal insulator transition of mit element and mit sensor using the same |
| 04/29/2009 | EP1695104B1 Method and assembly for testing a power output stage |
| 04/29/2009 | CN201230217Y Solar high voltage live display device |
| 04/29/2009 | CN201229380Y Remote monitoring device for field electrical equipment |
| 04/29/2009 | CN201229379Y Induction electroscope |
| 04/29/2009 | CN201229378Y Neon electroscopy with speech function |
| 04/29/2009 | CN201229377Y Multipurpose test pencil |
| 04/29/2009 | CN201229376Y 电缆插件式电压传感器 Cable plug-in voltage sensor |
| 04/29/2009 | CN201229375Y Solenoid valve closed current detector |
| 04/29/2009 | CN201229374Y Low-power consumption battery powered three phase ammeter |
| 04/29/2009 | CN201229373Y Condensance current charged test device for capacitive device |
| 04/29/2009 | CN201229372Y Three-phase optical fiber electronic mutual-inductor |
| 04/29/2009 | CN201229371Y Optical fiber electronic mutual-inductor |
| 04/29/2009 | CN201229369Y AC electrical artificer meter |
| 04/29/2009 | CN201227237Y Vacuum cleaner |
| 04/29/2009 | CN101421631A Method for measuring an alternating current which is generated using inverters, and arrangement for carrying out the method |
| 04/29/2009 | CN101419250A Voltage test device |
| 04/29/2009 | CN101419249A Low-voltage high speed comparator for electric current |
| 04/29/2009 | CN101419248A Charge display device |
| 04/29/2009 | CN101419247A Ground ion flow density measurement system for AC/DC parallel powerline and measurement method thereof |
| 04/29/2009 | CN100483885C Storage battery protecting device |
| 04/28/2009 | US7525806 Combination current sensor and relay |
| 04/23/2009 | US20090105973 Noncontact Measurement Method of Currents on Superconductive Wires Connected in Parallel |
| 04/23/2009 | DE202009001435U1 Alarmvorrichtung für Strommessung Alarm device for power measurement |
| 04/23/2009 | DE202008016900U1 Schaltungsanordnung zur Phasenkontrolle der Phasenleiter einer (elektrischen) Kabelanordnung, bevorzugt für mobile Mischeinrichtungen im Bauwesen Circuit arrangement for phase control of the phase conductor of a (electric) cable assembly, preferably for mobile mixing equipment in construction |
| 04/23/2009 | DE102007050298A1 Verfahren zum Erkennen eines Lastabfalls A method for detecting a load drop |
| 04/23/2009 | DE102007049528A1 Verfahren und Vorrichtung zur Messung von Zellenspannungen in einer Mehrzahl von in Reihe geschalteten Akkumulatorzellen Method and apparatus for measuring cell voltages in a plurality of series-connected battery cells |
| 04/23/2009 | DE102007046488A1 Verfahren und Vorrichtung zur Diagnose in integrierten Leistungsbrückenschaltungen Method and apparatus for diagnosis in integrated power bridge circuits |
| 04/23/2009 | DE102007044483A1 Schutzschaltung zum Schutz einer Halbbrückenschaltung Protection circuit for protecting a half-bridge circuit |
| 04/22/2009 | EP2049908A1 Audio level meter |
| 04/22/2009 | EP1348133B1 Electrical quantity sensor |
| 04/22/2009 | CN201226021Y Apparatus for recording lighting strike of overhead transmission line |
| 04/22/2009 | CN201226019Y Current temperature on-line fault indicator |
| 04/22/2009 | CN201226011Y Induction type high voltage electrified display interlock apparatus |
| 04/22/2009 | CN201226010Y Flat-plate type rapid steep-wave VFTO sensor |
| 04/22/2009 | CN201226009Y Sensing head of optical fiber optical grating Fabry-Perot current sensor |
| 04/22/2009 | CN201224416Y Apparatus for measuring railway frequency shift signal |
| 04/22/2009 | CN101414747A Overcurrent protective device for DC brush motor |
| 04/22/2009 | CN101413992A Features to reduce low-battery reporting to security services at night |
| 04/22/2009 | CN101413970A Method for measuring electrode current of buried arc furnace |
| 04/22/2009 | CN101413969A Signal conditioning circuit for high precision measuring uV level voltage |
| 04/22/2009 | CN101413966A Modular electric energy metering machine |
| 04/22/2009 | CN101413965A Modular assembled electrical energy meter |
| 04/21/2009 | US7522891 High frequency peak power detection circuit |
| 04/21/2009 | US7521952 Test structure for electromigration analysis and related method |