| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 01/26/2011 | CN101957400A Distribution electric energy quality analysis meter and analyzing method |
| 01/26/2011 | CN101957399A Digital closed loop type optical fiber current sensor |
| 01/26/2011 | CN101957398A Method for detecting and calculating primary time constant of power grid based on electromechanical and electromagnetic transient hybrid simulation technology |
| 01/26/2011 | CN101957397A Voltage automatic measurement system and measurement method |
| 01/26/2011 | CN101957396A On-line monitoring device and method for voltage quality of electric power system |
| 01/26/2011 | CN101957394A Clamp-on multimeter including a rogowski coil for measuring alternating current in a conductor |
| 01/26/2011 | CN101566641B Power system transmission line parameter synchronic measurement and recording device |
| 01/26/2011 | CN101566501B Method for measuring plasma electron density by fiber spectrum synergizing discharge current |
| 01/26/2011 | CN101340083B Bearing current measuring and protecting apparatus of three-phase cage type induction motor |
| 01/25/2011 | US7876085 Quasi-resonant valley voltage detecting method and apparatus |
| 01/25/2011 | US7876084 Method for the determination of a voltage limit of a clutch actuating motor |
| 01/20/2011 | WO2011008569A1 A wide dynamic range electrometer with a fast response |
| 01/20/2011 | WO2010107199A3 Apparatus for measuring ground leakage current in an ungrounded direct current power system, and method for same |
| 01/20/2011 | US20110015884 System and method for automatic voltage range measurement |
| 01/20/2011 | US20110012605 Current based overvoltage and undervoltage detector |
| 01/20/2011 | US20110012588 Wide-Dynamic Range Electrometer with a Fast Response |
| 01/20/2011 | US20110012585 Approach for controlling particulate matter in an engine |
| 01/20/2011 | DE202010015761U1 Einhand-Spannungstesteinrichtung Single Handle voltage test equipment |
| 01/20/2011 | DE102009033772A1 Messvorrichtung sowie Verkaufsset nebst Handgerät zur Bestimmung der elektrischen Spannung eines strömenden Fluids Measuring device as well as sales set together with hand-held device for determining the electrical voltage of a flowing fluid |
| 01/19/2011 | CN201717614U Over-current and three-phase imbalance detecting protection device for power generator of wind power generating set |
| 01/19/2011 | CN201717603U Voltage detection circuit device |
| 01/19/2011 | CN201716809U Residual current type electric-fire monitoring detector |
| 01/19/2011 | CN201716379U Tester used for high-voltage electroscopic pen |
| 01/19/2011 | CN201716375U Full automatic measuring device of precision resistor |
| 01/19/2011 | CN201716365U AC current alarm device |
| 01/19/2011 | CN201716364U Combined high voltage electroscope |
| 01/19/2011 | CN201716363U Gis high-voltage electroscope |
| 01/19/2011 | CN201716362U Non-contact digital electroscope |
| 01/19/2011 | CN201716361U Online voltage and temperature display |
| 01/19/2011 | CN201716360U BEMF detection circuit for DC motor |
| 01/19/2011 | CN201716359U Non-contact electronic type voltage sampling device |
| 01/19/2011 | CN201716358U Single-platform multifunctional digital installation meter |
| 01/19/2011 | CN201716357U Static voltage acquisition rod |
| 01/19/2011 | CN201716352U Digital power liquid crystal display |
| 01/19/2011 | CN201716310U Electrician-used gas detector |
| 01/19/2011 | CN201716113U Online temperature and voltage display |
| 01/19/2011 | CN201714354U Electrical measuring instrument of petroleum pumping unit |
| 01/19/2011 | CN201712326U Dual-purpose neon-electroscope |
| 01/19/2011 | CN101951180A DC content detection and control circuit for output side of synchronized inverter |
| 01/19/2011 | CN101951002A Electric field induction type signal detection circuit power supply of high-voltage system |
| 01/19/2011 | CN101950476A Multiway voltage signal monitoring device |
| 01/19/2011 | CN101950212A Multipoint identification method for touch screen |
| 01/19/2011 | CN101950003A Energy-saving lamp operating condition and detection method |
| 01/19/2011 | CN101949989A LED leakage current test method under different wavelengths |
| 01/19/2011 | CN101949982A Super capacitor detection and control circuit system |
| 01/19/2011 | CN101949973A Method for measuring ground potential |
| 01/19/2011 | CN101949972A Current measurement device for high-voltage converter |
| 01/19/2011 | CN101949971A Method for selecting low-voltage storage battery |
| 01/19/2011 | CN101949970A Isolated current sampling device of electromagnetic oven |
| 01/19/2011 | CN101949969A Sensing head of optical current transformer and sensing method |
| 01/19/2011 | CN101949968A Working condition indicating device used for tunnel oven heater |
| 01/19/2011 | CN101949967A Direct current (DC) electronic watch |
| 01/19/2011 | CN101949966A Mobile terminal capable of accurately detecting charging current |
| 01/19/2011 | CN101949965A Electric current sensor |
| 01/19/2011 | CN101949964A Space capacitive voltage divider and application thereof on high voltage measuring device |
| 01/19/2011 | CN101603981B Single-battery voltage measurement circuit of multi-section serial battery pack system for automobile |
| 01/19/2011 | CN101051205B Apparatus and method for controlling power supplied to fixing unit |
| 01/19/2011 | CN101019471B Active dose reduction device and method |
| 01/18/2011 | US7872464 Hand held arc fault testing system |
| 01/13/2011 | WO2011004673A1 Current measurement device, current measurement method and current measurement program |
| 01/13/2011 | WO2010105238A3 General purpose protocol engine |
| 01/13/2011 | US20110010120 Process variable transmitter with two-wire process control loop diagnostics |
| 01/13/2011 | US20110010106 Apparatus state detector, method for detecting apparatus state, apparatus state detection server and apparatus state detection system; living persons' anomaly detector, living persons' anomaly detection system and method for detecting living persons' anomaly, and apparatus-state database maintenance server |
| 01/13/2011 | US20110006793 Oscilloscope probe |
| 01/13/2011 | US20110006756 Power measurement system, method and/or units |
| 01/13/2011 | US20110006753 Electric current sensor |
| 01/13/2011 | DE112009000371T5 Wellenformstrommonitor, der den RDSon eines Low-Side-Brücken-FET verwendet Current waveform monitor that uses the RDSon a low-side FET bridge |
| 01/13/2011 | DE112009000370T5 Schätzung der Batteriehysterese auf der Grundlage eines Modells Estimating the battery hysteresis on the basis of a model |
| 01/12/2011 | EP2171483B1 Improved current sensor |
| 01/12/2011 | CN201708578U Power interruption-free detecting device |
| 01/12/2011 | CN201708515U Power protection circuit |
| 01/12/2011 | CN201707749U Power line carrier electrical fire detection device |
| 01/12/2011 | CN201707449U Transient electromagnetic detector transmitter |
| 01/12/2011 | CN201707427U Selectively combined-type relay protection testing circuit |
| 01/12/2011 | CN201707418U Ground wire electrified detection device for electric water heater leakage protector |
| 01/12/2011 | CN201707405U Comprehensive tester for safety performance of electric tool |
| 01/12/2011 | CN201707403U On-line monitoring device of insulation status of capacitance type sleeve |
| 01/12/2011 | CN201707399U Coterminous detection relay |
| 01/12/2011 | CN201707391U Small-sized portable real-timely energy consumption monitoring device |
| 01/12/2011 | CN201707390U Power line safety monitor with ZIGBEE wireless communication function |
| 01/12/2011 | CN201707389U Supply current detection device of high speed alternating current motor |
| 01/12/2011 | CN201707388U Portable direct-current storage battery voltage measurement device |
| 01/12/2011 | CN201707387U Detecting device of electric appliance of car seat |
| 01/12/2011 | CN201707386U Voltage characteristic detecting device of direct-current power supply element |
| 01/12/2011 | CN201707385U Lightning stroke display of lightning rods |
| 01/12/2011 | CN201707384U Residual current monitoring alarm system and detection controller |
| 01/12/2011 | CN201707383U Large-size hoop type travelling wave high-frequency sensor |
| 01/12/2011 | CN201707382U Optical power distribution transformer neutral current detector |
| 01/12/2011 | CN201707381U Ion current intensity detecting device of samples in vacuum cavity of mass spectrograph |
| 01/12/2011 | CN201707380U Portable MOA live detection device based on GPS synchronization |
| 01/12/2011 | CN201707379U Automatic detection recorder for submerged arc furnace load |
| 01/12/2011 | CN201700461U Electric shock preventive helmet with voice alarm function |
| 01/12/2011 | CN1982898B System for gathering thunderbolt information |
| 01/12/2011 | CN101946187A Model-based estimation of battery hysteresis |
| 01/12/2011 | CN101946185A Compressor protection and grid fault detection device |
| 01/12/2011 | CN101944727A Surge protector with detection device |
| 01/12/2011 | CN101944573A 12V lead-acid storage battery shell |
| 01/12/2011 | CN101943745A Device, system and method for detecting voltage of single batteries of serial lithium battery pack |
| 01/12/2011 | CN101943744A Dry high-potential tester and solar simulation tool |
| 01/12/2011 | CN101943733A Primary power supply scrambler |