| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 09/24/2009 | WO2007109156A9 Site analysis methodology and device for testing electric power |
| 09/24/2009 | US20090237394 Display driving circuit including output circuit having test circuit and test method thereof |
| 09/24/2009 | US20090237071 Method for Determining the Type of Connection of at Least Two Electrical Devices and System Comprising Several Electric Devices |
| 09/24/2009 | US20090237041 Electric current measurement apparatus, voltage measurement apparatus and power supply apparatus |
| 09/24/2009 | US20090236909 Adaptive Power Strip |
| 09/24/2009 | DE102009003640A1 Mikroelektromechanische Strommessvorrichtung Microelectromechanical current measuring device |
| 09/24/2009 | DE10119519B9 Demodulator und Sensorvorrichtung Demodulator and sensor device |
| 09/23/2009 | EP2103948A1 Signal quality measuring device, spectrum measuring circuit, and program |
| 09/23/2009 | EP2103947A1 Voltage detector for storage element |
| 09/23/2009 | EP2103194A2 Lamp driver for operating a gas discharge lamp |
| 09/23/2009 | EP2102671A2 Fault prediction in electric transmission networks |
| 09/23/2009 | EP2102668A2 Electrically insulated current measuring device, electronic trigger, and circuit breaker comprising such a device |
| 09/23/2009 | CN101540496A Measuring and protecting device of output current of chain-type inverter |
| 09/23/2009 | CN101539793A Fan system and signal output method thereof |
| 09/23/2009 | CN101539605A Electronic measurement method based on IP core and electronic measurement instrument |
| 09/23/2009 | CN101539594A Voltage detection circuit |
| 09/23/2009 | CN101539593A Intelligent central metal armouring withdrawing voltage sensing device |
| 09/23/2009 | CN101539592A Micro-electromechanical current sensing apparatus |
| 09/23/2009 | CN100543480C Peak inspector |
| 09/23/2009 | CN100543479C Abrupt voltage wave calculating system and process |
| 09/22/2009 | US7593821 Method and system for joint battery state and parameter estimation |
| 09/22/2009 | US7592613 Sensor and system for sensing an electron beam |
| 09/17/2009 | US20090234600 Load calculation control method and apparatus |
| 09/17/2009 | US20090230949 State detection device for decting operation state of high-frequency heating apparatus |
| 09/17/2009 | US20090230947 Semiconductor integrated circuit |
| 09/17/2009 | US20090230945 Device and method allowing the detection and display of objects located behind an obscuring surface |
| 09/17/2009 | US20090230936 Method of improved current sensing in dc-dc converters |
| 09/17/2009 | DE102008061955A1 Electrical on-board power supply system diagnosing method for motor vehicle, involves detecting defect when difference between three actual voltages of respective energy sources and generator is smaller than preset threshold |
| 09/17/2009 | DE102008013408A1 Shuntwiderstand mit Messschaltung Shunt resistor with measuring circuit |
| 09/16/2009 | CN201311450Y Direct current value collection circuit |
| 09/16/2009 | CN201311449Y Signal conditioning circuit of high precision measurement uV level voltage |
| 09/16/2009 | CN201311448Y Solar cell panel no-load voltage detection circuit |
| 09/16/2009 | CN201311447Y Voltage and current testing system |
| 09/16/2009 | CN101535820A An AC current sensor for measuring electric AC current in a conductor and an indicator system comprising such a sensor |
| 09/16/2009 | CN101535818A Method and arrangement for measuring the voltage on a conductor |
| 09/16/2009 | CN101533285A A reference voltage buffer circuit |
| 09/16/2009 | CN101533059A Device for detecting abnormity of zero line and ground wire of leakage protection device |
| 09/16/2009 | CN101533044A Voltage detecting device of frequency converter for plasma separator |
| 09/16/2009 | CN101533043A Test system for vehicle quiescent current |
| 09/16/2009 | CN101533042A Method for monitoring resistive current of non-voltage reference quantity detection lightning arrester |
| 09/16/2009 | CN101533041A Method for online separately detecting resistive leakage current of non-voltage reference source |
| 09/15/2009 | US7589567 Compensation technique for current source channel-length modulation |
| 09/15/2009 | US7589516 Poly-phase electric energy meter |
| 09/15/2009 | US7589514 Method for accurate current sensing in power converters |
| 09/15/2009 | CA2289736C Method and device for measuring an electrical voltage |
| 09/11/2009 | WO2009111318A1 Faulted circuit indicator with fault characteristic detection and display |
| 09/11/2009 | WO2009110244A1 Battery system |
| 09/11/2009 | CA2716582A1 Faulted circuit indicator with fault characteristic detection and display |
| 09/10/2009 | US20090228221 Accumulator state detection device |
| 09/10/2009 | US20090224824 Optimized uplink efficiencies for transmission of satellite data |
| 09/10/2009 | US20090224804 Detecting circuit and electronic apparatus using detecting circuit |
| 09/10/2009 | US20090224749 Method for measuring electric potential on sample, and charged particle beam system |
| 09/10/2009 | US20090224748 System and method of sensing actuation and release voltages of an interferometric modulator |
| 09/10/2009 | US20090224747 Ratiometric ac wire tracer |
| 09/10/2009 | DE102008012546A1 Vorrichtung zur Erfassung der Ausgangsspannung einer Batterie Means for detecting the output voltage of a battery |
| 09/10/2009 | DE102008012545A1 Circuit for comparing two voltages, has comparator circuit with comparator having two inputs and output, where supply terminal is provided with output, where output of supply terminal is coupled with input of comparator |
| 09/10/2009 | DE102008012381A1 Electronic device for use in integrated circuit, has control stage producing control signal to feed reference voltage level as selected voltage level to comparator with input paths for comparing supply voltage level with selected level |
| 09/09/2009 | EP1961018B1 Low-resistance coaxial resistor for current measurement |
| 09/09/2009 | CN101527448A Battery protection circuit, testing device and method for battery protection circuit |
| 09/09/2009 | CN101527237A Method for improving emission characteristic of film ZnO field |
| 09/09/2009 | CN101526563A Motoring device for current input voltage output |
| 09/09/2009 | CN101526562A Distributed wireless high-voltage equipment insulating live testing system and testing method |
| 09/09/2009 | CN101526561A High frequency single-polarity heavy current pulse detection circuit |
| 09/09/2009 | CN101526557A Electricity steal-resistance load management method |
| 09/09/2009 | CN101526499A Automatic measuring device for true effective value of induced current in annular workpieces |
| 09/09/2009 | CN101526492A Ore-slurry multi-potential detector |
| 09/09/2009 | CN101526403A Measurement device for temperature and current of high voltage line |
| 09/09/2009 | CN100538387C Method of determining a zero point of a current sensor |
| 09/09/2009 | CN100538373C Voltage measuring device for overcoming thermoelectric potential influence |
| 09/09/2009 | CN100538372C Measuring current on a die |
| 09/09/2009 | CN100538371C Transmission line lightning stroke on-line monitoring system |
| 09/08/2009 | CA2521449C Combination hand tool and electrical testing device |
| 09/03/2009 | WO2009108494A1 Model-based estimation of battery hysteresis |
| 09/03/2009 | WO2009108440A1 Voltammetric device having sample degassing system |
| 09/03/2009 | WO2009086020A3 Method and apparatus for managing test result data generated by a semiconductor test system |
| 09/03/2009 | WO2009085727A3 Multiple capacitance measuring circuits and methods |
| 09/03/2009 | WO2009068619A3 Circuit arrangement for dc/dc converters in particular and method for the control thereof |
| 09/03/2009 | WO2009064440A3 Three-phase detection module |
| 09/03/2009 | WO2009036048A3 Automated configuration of a power monitoring system using hierarchical context |
| 09/03/2009 | US20090222225 Iddq test apparatus and test method |
| 09/03/2009 | US20090222224 Multi-circuit direct current monitor with Modbus serial output |
| 09/03/2009 | US20090219007 Measurement apparatus, test apparatus, and measurement method |
| 09/03/2009 | DE102009004649A1 Vorrichtungen und Systeme zur Spannungsbasierten Detektion, Verfizierung und/oder Identifizierung von Gleichtakt-AC-Fehlern Devices and systems for voltage-based detection, Verfizierung and / or identification of common mode errors AC- |
| 09/02/2009 | EP2095137A1 Semiconductor device for measuring ultra small electrical currents and small voltages |
| 09/02/2009 | EP1877806B1 Supply voltage monitoring |
| 09/02/2009 | EP1295134B1 Method and apparatus for adjusting the phase of input/output circuitry |
| 09/02/2009 | CN201302591Y 过电压在线监测装置 Over-voltage line monitoring device |
| 09/02/2009 | CN201302590Y Hook-type electric meter with relatively rotating body and hook body |
| 09/02/2009 | CN201302589Y High-voltage detecting device |
| 09/02/2009 | CN101520491A Testing method and device for short-circuit and over-voltage protection of switch power supply output |
| 09/02/2009 | CN101520490A Test method and device of power supply output line |
| 09/02/2009 | CN101520483A Train induction loop break detection method and device of thereof |
| 09/02/2009 | CN101520475A Method for monitoring carrier density of organic coating layer surface based on Hall effect |
| 09/02/2009 | CN101520474A Magnetic biasing on-line detection method for transformer based on single Hall current sensor |
| 09/02/2009 | CN101520473A Low voltage triphase load control device |
| 09/02/2009 | CN101520472A Battery jar voltage insulation test circuit based on linear optical coupler |
| 09/02/2009 | CN100535678C Ionization test for electrical verification |
| 09/02/2009 | CN100535670C Transformer oil electrified degree automatic detection device |
| 09/01/2009 | USRE40889 Power metering module |
| 09/01/2009 | US7583107 Sense amplifier circuit for low voltage applications |