| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 05/14/2008 | CN201061124Y Intelligent terminal system of oil well |
| 05/14/2008 | CN201060780Y Insulation operating arm with electroscope |
| 05/14/2008 | CN201060735Y Positive and negative 500kV DC current sensor |
| 05/14/2008 | CN201060252Y Three phase electronic type over loading relay tester |
| 05/14/2008 | CN201060238Y High-pressure electrified displaying interlock apparatus detector |
| 05/14/2008 | CN201060234Y Direct current detection alarm circuit |
| 05/14/2008 | CN201060233Y Breakdown disjunction mechanism used for insulation pretection apparatus pressure test device |
| 05/14/2008 | CN201060232Y current mutual inductor testing apparatus for intelligent electrical apparatus release |
| 05/14/2008 | CN201060231Y High accuracy electrical current detection and temperature on-line testing apparatus |
| 05/14/2008 | CN201060228Y Electric voltage frequency measurement analysis system |
| 05/14/2008 | CN101180546A Method of forming current sensing circuit and structure thereof |
| 05/14/2008 | CN101178419A Integrate circuit system pressing impedance detection method |
| 05/14/2008 | CN101178417A High-precision rogowski current transformer |
| 05/14/2008 | CN101178416A Power supply voltage and electric bridge voltage sample circuit structure |
| 05/14/2008 | CN101178415A Electrical energy meter anti-theft electricity technology |
| 05/14/2008 | CN101178325A Flow measurement instrument |
| 05/14/2008 | CN100387995C Multifunctional AC parameter measuring instrument and its measuring method |
| 05/13/2008 | US7373264 Method and apparatus for generalized recursive least-squares process for battery state of charge and state of health |
| 05/13/2008 | US7373263 Analog-type measurements for a logic analyzer |
| 05/13/2008 | US7372307 Efficient current monitoring for DC-DC converters |
| 05/13/2008 | US7372248 Electronic circuit, system with an electronic circuit and method for testing an electronic circuit |
| 05/13/2008 | US7372247 Apparatus and method for locating and marking an underground utility |
| 05/13/2008 | US7372246 Phase identification system and method |
| 05/08/2008 | WO2008052495A1 Method and arrangement for measuring the voltage on a conductor |
| 05/08/2008 | WO2008034092A3 System and method for detecting non-cathode arcing in a plasma generation apparatus |
| 05/08/2008 | US20080106425 System and Method for Detecting Distribution Transformer Overload |
| 05/08/2008 | US20080106304 Semiconductor circuits using vertical bipolar junction transistor |
| 05/08/2008 | US20080106239 Ultra-fast ultracapacitor pack/device charger |
| 05/08/2008 | DE10255665B4 Schaltung und Verfahren zur Bestimmung wenigstens eines Spannungs-, Strom- und/oder Leistungswerts einer integrierten Schaltung Circuit and method for determining at least one of voltage, current and / or power value of an integrated circuit |
| 05/08/2008 | DE102007046033A1 Stromversorgungs-Vorrichtung für Kraftfahrzeuge Power supply device for motor vehicles |
| 05/08/2008 | DE102006052467A1 Verfahren und Vorrichtung zur Strommessung in einem insbesondere mehrphasigen Stromnetz Method and apparatus for current measurement in a particular multi-phase power network |
| 05/07/2008 | EP1918725A1 Voltage monitor and electrical storage device using the same |
| 05/07/2008 | CN201057534Y Induction type digital high-voltage electroscope |
| 05/07/2008 | CN101174235A Test board and test system |
| 05/07/2008 | CN101173979A Calibration method and special calibration device for dielectric oil dielectrical strength tester |
| 05/07/2008 | CN101173965A Wireless high-voltage electriferous display locking device and operating method thereof |
| 05/07/2008 | CN101173964A Arc detection apparatus and method |
| 05/02/2008 | WO2008051442A1 Extending contact life in remote disconnect applications |
| 05/02/2008 | WO2008015462A3 Power supply circuit |
| 05/02/2008 | CA2662927A1 Extending contact life in remote disconnect applications |
| 05/01/2008 | US20080103704 System and method for volt-OHM meter measurement acceleration |
| 05/01/2008 | US20080100348 Semiconductor Device |
| 05/01/2008 | US20080100282 Ground resistance test apparatus |
| 05/01/2008 | US20080100276 Current sensing circuit and voltage regulator using the same |
| 04/30/2008 | DE102007042783A1 Datenübertragungsvorrichtung Data transfer device |
| 04/30/2008 | DE102006034570A1 Electrical parameter i.e. current, determining device, has additional piezoelement provided for causing current flow, which is evaluated for determining electrical parameter in particular for current measurement |
| 04/30/2008 | CN201054012Y Voltage monitor |
| 04/30/2008 | CN201054011Y Voltage-limiting type over voltage protector thermal stability test device |
| 04/30/2008 | CN201054010Y Induction type electricity test device |
| 04/30/2008 | CN201054009Y Four-range voltage measuring instrument |
| 04/30/2008 | CN201054008Y Voltage measuring instrument for eliminating variation and thermoelectric potential influence |
| 04/30/2008 | CN201054007Y Voltage measuring instrument with multiple ranges |
| 04/30/2008 | CN201054006Y Four-range voltage measuring device adopting current splitting branch |
| 04/30/2008 | CN201054005Y Voltage measuring device for overcoming thermoelectric potential influence |
| 04/30/2008 | CN201054004Y Voltage measuring device with 1uV resolution |
| 04/30/2008 | CN201054003Y Variation-free voltage measuring device adopting transposition branch |
| 04/30/2008 | CN201054002Y Voltage measuring instrument |
| 04/30/2008 | CN201054001Y Voltage measuring instrument without variation |
| 04/30/2008 | CN201054000Y Voltage measuring instrument with minimum stepping 0.1uV |
| 04/30/2008 | CN201053998Y Two-range potentiometer |
| 04/30/2008 | CN201053997Y Two-range DC potentiometer |
| 04/30/2008 | CN201053996Y Portable potentiometer |
| 04/30/2008 | CN201053994Y Three-range potentiometer adopting transposition branch |
| 04/30/2008 | CN201053992Y Two-range portable potentiometer |
| 04/30/2008 | CN201053991Y Four-range potentiometer |
| 04/30/2008 | CN201053990Y Two-range portable potentiometer |
| 04/30/2008 | CN201053989Y Four-range DC potentiometer |
| 04/30/2008 | CN101169456A USB bus current detection device |
| 04/30/2008 | CN100385244C PWM current measuring method |
| 04/30/2008 | CN100385243C Circuit configuration and method for compensating for the changes in a transfer ratio of a magnetic field sensor arrangement |
| 04/29/2008 | US7366623 Method and apparatus for characterizing a load on a data line |
| 04/29/2008 | US7366049 Apparatus and method for updating data in a dual port memory |
| 04/29/2008 | US7365554 Integrated circuit for determining a voltage |
| 04/29/2008 | US7365528 Method and apparatus of voltage measurement using flying capacitor and switching circuits |
| 04/24/2008 | US20080094067 Three-axis marine electric field sensor for seafloor electrical resistivity measurement |
| 04/24/2008 | US20080094056 Device and method for detecting battery voltage level |
| 04/24/2008 | US20080094054 Fuel Cell State Monitor Apparatus and Method |
| 04/24/2008 | US20080094052 Voltage detector circuit |
| 04/24/2008 | US20080094051 Demultiplexed nanowire sensor array for detection of chemical and biological species |
| 04/24/2008 | DE102006044530A1 Vorrichtung und Verfahren zur Strommessung bzw. Stromverstärkung Apparatus and method for power measurement or current gain |
| 04/23/2008 | EP1914861A2 Battery management system and driving method thereof |
| 04/23/2008 | EP1336110A4 Oscilloscope panel capture and implementation |
| 04/23/2008 | CN201051123Y Power system over-current detection and alarming device |
| 04/23/2008 | CN201051122Y Passive track polarity tester |
| 04/23/2008 | CN201051119Y Distributed optical voltage mutual inductor |
| 04/23/2008 | CN201051011Y Analog electronic balance detection and analysis instrument |
| 04/23/2008 | CN201050358Y Device for monitoring oil well pumping unit start-stop and collecting up and down stroke electric current and punching number |
| 04/23/2008 | CN101166982A Low power voltage detection circuit and its method |
| 04/23/2008 | CN101165508A Electronic component simulated fixture and power supply abnormity detection method |
| 04/23/2008 | CN101165497A Power tube current detection circuit |
| 04/23/2008 | CN100383548C Power source characteristic testing insrument |
| 04/23/2008 | CN100383536C Electric current detector |
| 04/22/2008 | US7362588 Flying capacitor type battery voltage detector |
| 04/22/2008 | US7362085 Power line carrier communication system and its communication device, and method for constructing power line carrier communication system |
| 04/22/2008 | US7362010 Currents-sensing switching circuit |
| 04/17/2008 | WO2008045426A2 System and method to measure series-connected cell voltages |
| 04/17/2008 | DE102007004387A1 Electric current amperage measuring method for actuator of bus system, involves injecting sequence of stimulating pulses into resonant circuit, where duration of pulse is shorter than duration of pulse interval to subsequent pulse |
| 04/17/2008 | CA2665987A1 Method, apparatus, and system for detecting hot socket deterioration in an electrical meter connection |
| 04/16/2008 | CN201048319Y Connection box of high voltage motor |
| 04/16/2008 | CN201048287Y Overvoltage protector with acousto-optic early warning and exterior extension interface circuit |