| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 09/25/2013 | CN102222934B Isolated island detecting method, device and system for photovoltaic grid-connected power generation system |
| 09/25/2013 | CN101988953B Method and system for testing electric motors |
| 09/25/2013 | CN101839936B Current measurement device |
| 09/25/2013 | CN101672871B Voltage reduction detection circuit and switching power supply system |
| 09/24/2013 | US8543251 Centralized fine grade control of device energy consumption |
| 09/24/2013 | US8542004 Semiconductor device and driving method of the same |
| 09/24/2013 | US8542002 System and method for performing power spectral density and power level measurements |
| 09/24/2013 | US8541983 Circuit and method of operation for an electrical power supply |
| 09/24/2013 | CA2469443C Method of detecting partial discharges and diagnostic system for electrical apparatus |
| 09/19/2013 | WO2013138223A1 Dynamic improvement in rms to dc converters |
| 09/19/2013 | WO2013137672A1 Battery state estimation device and method |
| 09/19/2013 | WO2013136569A1 Cell voltage monitoring device |
| 09/19/2013 | WO2012145295A3 System of intelligent sensors in an electrical panelboard |
| 09/19/2013 | US20130245975 Drawing device, drawing method, and computer-readable recording medium |
| 09/19/2013 | DE102012204198A1 Device for detecting current flowing in conductor of control device of vehicle has detector coupled to terminal of winding to detect voltage generated by magnetic field in coil as measure of current flowing through conductors |
| 09/19/2013 | DE102012204179A1 Messwandleranordnung Transducer arrangement |
| 09/19/2013 | DE102012203940A1 Control device for controlling valve connected to outlet side in motor vehicle, has current path section, which leads to output connection point of output over sense field-effect-transistor-driver of controller |
| 09/19/2013 | DE102012102308A1 Method for detecting resetting of magnetic hysteresis element e.g. pulse wire of position measurement device, involves evaluating slope of potential gradient of voltage pulses by circuit device |
| 09/19/2013 | DE102012009243B3 Arrangement for contactless current measurement in electroplating bath, has evaluation unit which determines difference of time durations so that characteristic field of primary current is determined from difference of time durations |
| 09/19/2013 | DE102009024078B4 Gradientenkabelüberwachung Gradientenkabelüberwachung |
| 09/19/2013 | DE102008059853B4 Schaltungsanordnung mit einem Lasttransistor und einem Messtransistor Circuit arrangement having a load transistor and a sense transistor |
| 09/18/2013 | EP2639592A1 Method and apparatus for collecting voltage differential parameters of individual battery cells in battery pack |
| 09/18/2013 | EP2638406A1 Current measurement for an electric heater |
| 09/18/2013 | EP2407996B1 Current sensing arrangement in an inverter |
| 09/18/2013 | CN203205851U Anti-thunder remote early warning monitoring box |
| 09/18/2013 | CN203205831U Voltage monitoring protection circuit |
| 09/18/2013 | CN203204663U RFID tag with low-voltage alarm function |
| 09/18/2013 | CN203204121U Online monitoring system for insulation of power transformation equipment |
| 09/18/2013 | CN203204114U Direct current grounding alarm based on current detector with openings |
| 09/18/2013 | CN203204110U Current timing combined instrument for circuit breaker overcurrent comprehensive test bench |
| 09/18/2013 | CN203204090U Substation zinc oxide arrester on-line monitoring device |
| 09/18/2013 | CN203204067U Device for measuring voltage of high voltage bus |
| 09/18/2013 | CN203204066U Ammeter used for hollow-core mutual inductor |
| 09/18/2013 | CN203204065U Multiple current detection equipment |
| 09/18/2013 | CN203204064U Intelligent monitor of solar cell panel |
| 09/18/2013 | CN203204063U Voltage quality monitoring analyzer with a wireless control system |
| 09/18/2013 | CN203204062U Comparator-based voltage signal detection circuit |
| 09/18/2013 | CN203204061U Single-module lightning stroke counting device used for surge protection device and employing standard guide rail installation mode |
| 09/18/2013 | CN203204060U Motor current alarm device of numerically controlled lathe |
| 09/18/2013 | CN203204059U System for prompting electrification of storage battery frame, and power-environment monitoring system |
| 09/18/2013 | CN203204058U Multifunctional combination type electric pen |
| 09/18/2013 | CN203204057U Bracelet type electroprobe |
| 09/18/2013 | CN203204056U Power frequency sine all loop self-checking electroscope |
| 09/18/2013 | CN203204055U Electroprobe with wire winder |
| 09/18/2013 | CN203204054U Lightning current detection device |
| 09/18/2013 | CN203204053U Current detecting device |
| 09/18/2013 | CN203204052U Leakage current measurement system for lightning protection devices |
| 09/18/2013 | CN203204051U Portable capacitance current tester |
| 09/18/2013 | CN203204050U Alternating-current servo motor winding current detection circuit |
| 09/18/2013 | CN203204049U 电压谐波监测仪电路 Voltage harmonic monitor circuit |
| 09/18/2013 | CN203204048U Output voltage measurement circuit for high-voltage frequency converter |
| 09/18/2013 | CN203204032U Current sampling module-contained measurement instrument free of alternating external magnetic field influence |
| 09/18/2013 | CN103312521A Control method of data card and data card |
| 09/18/2013 | CN103308866A Direct current insulation on-line monitoring device of transformer substation |
| 09/18/2013 | CN103308758A Signal sensing circuit |
| 09/18/2013 | CN103308757A Signal sensing circuit |
| 09/18/2013 | CN103308756A Frequency changer voltage detection circuit |
| 09/18/2013 | CN103308755A Insulation testing device and method for high-voltage direct-current remote power supply system |
| 09/18/2013 | CN103308754A On-line overvoltage monitoring system based on lightning surge current of lightning arrester |
| 09/18/2013 | CN103308753A On-line overvoltage monitoring system based on switching surge current of lightning arrester |
| 09/18/2013 | CN103308752A High voltage detection circuit and radio frequency identification label chip using high voltage detection circuit |
| 09/18/2013 | CN103308751A Modulation decision device and modulation decision method of power supply circuit, and power supply circuit |
| 09/18/2013 | CN103308750A General high-voltage potential indicator |
| 09/18/2013 | CN103308749A Fast recognition system and method for power system fault current |
| 09/18/2013 | CN103308748A Effective value measuring method and system based on digital filtering |
| 09/18/2013 | CN103308747A Weighting least mean square (LMS) detection method for harmonic currents |
| 09/18/2013 | CN103308746A High-dynamic-characteristic voltage detection circuit and method for sub-synchronous resonance detection |
| 09/18/2013 | CN103308745A Optical fiber current sensing system |
| 09/18/2013 | CN103308744A Leakage current detector for ground wire of high-voltage cable shielding net |
| 09/18/2013 | CN103308743A Direct current metering device |
| 09/18/2013 | CN103308742A Verification and testing methods for constant current discharge current parameter of lead acid storage battery |
| 09/18/2013 | CN103308741A Server and current detection pre-warning system thereof |
| 09/18/2013 | CN103308739A Network-type Hall direct current sensor |
| 09/18/2013 | CN102508004B Power voltage monitoring circuit |
| 09/18/2013 | CN102253274B Current detection method and device |
| 09/18/2013 | CN102124354B Device and method for estimating battery resistance characteristics using battery voltage behaviour |
| 09/17/2013 | US8539265 Power protection system for power supply |
| 09/17/2013 | US8538598 Power and thermal optimization of processor and cooling |
| 09/17/2013 | US8536899 Calibration circuit apparatus and method |
| 09/17/2013 | US8536898 SRAM sense amplifier |
| 09/17/2013 | US8536857 Power line takeoff clamp assembly |
| 09/12/2013 | WO2013134270A1 Extended analog computer apparatus |
| 09/12/2013 | US20130234697 Method and device for counting energisation events |
| 09/12/2013 | DE102012203488A1 Verfahren zum seriellen Auslesen von elektrischen Messelementen Method for serial readout of electrical measuring elements |
| 09/12/2013 | DE102012102034A1 Method for determining current in primary conductor for power distribution during electrical system operation, involves adjusting maximum current value for current flow through auxiliary circuit by adjusting auxiliary resistor |
| 09/12/2013 | DE102012004913A1 Device for determination of measurement value of e.g. inductive and/or capacitive components, has sample-and-hold circuit adjusting voltage as measurement value proportional to ratio of inductances and/or capacitances of components |
| 09/12/2013 | DE102012004716A1 Schaltungsanordnung zur Zustandskontrolle und Protokollierung von Überspannungsschutzgeräten oder Überspannungsschutzanlagen Circuit for state control and logging of surge protection devices or overvoltage protection systems |
| 09/11/2013 | EP2637276A1 Protection circuit for lithium-ion battery |
| 09/11/2013 | CN203193139U Current-visible distribution box |
| 09/11/2013 | CN203191500U Multifunctional electrical monitoring early warning device |
| 09/11/2013 | CN203191489U Parallel testing system |
| 09/11/2013 | CN203191471U Electric energy quality detection apparatus |
| 09/11/2013 | CN203191463U Digital regulator with over-current protective device |
| 09/11/2013 | CN203191462U Digital regulator with overvoltage protector |
| 09/11/2013 | CN203191461U Digital regulator with cooling device |
| 09/11/2013 | CN203191455U Apparatus for measuring trend direction of photovoltaic grid-connected power generation and commercial power |
| 09/11/2013 | CN203191445U Online monitoring system for bucking current |
| 09/11/2013 | CN203191444U High-precision intelligent digital voltmeter |
| 09/11/2013 | CN203191443U Lightning arrester leakage current on-line monitoring device |
| 09/11/2013 | CN203191442U A voltage intelligent match measuring apparatus |