| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 04/27/2011 | CN201813314U Alternating voltage sampling circuit of AC powered active power factor correction circuit |
| 04/27/2011 | CN201812957U Wire grounding device capable of preventing live connection of ground wire |
| 04/27/2011 | CN201812175U Handheld operation test terminal for internal standardized operation specification program |
| 04/27/2011 | CN201812022U Monitoring device for harmful electric arc of power system |
| 04/27/2011 | CN201812011U On-line monitoring device for surface contamination of insulator |
| 04/27/2011 | CN201811997U Three-phase detection equipment |
| 04/27/2011 | CN201811991U Large air compressor power supply electricity quality monitoring and analysis system |
| 04/27/2011 | CN201811990U Multi-purpose electric measuring instrument |
| 04/27/2011 | CN201811989U Direct-current high-voltage indicating device |
| 04/27/2011 | CN201811935U Sensor module |
| 04/27/2011 | CN1947026B Detection method for an electrical polyphase machine |
| 04/27/2011 | CN102037595A System and method of controlling fluid to a fluid consuming battery |
| 04/27/2011 | CN102037368A Opto-isolator multi-voltage detection circuit |
| 04/27/2011 | CN102037367A RMS detector with automatic gain control |
| 04/27/2011 | CN102035457A Motor drive device |
| 04/27/2011 | CN102035370A Charge pump circuit with current detection function and circuit unit thereof |
| 04/27/2011 | CN102035165A System and method for providing short-circuit protection |
| 04/27/2011 | CN102034344A On-line detection and diagnosis device and method for voltage signal of photoelectric isolating type excess channel |
| 04/27/2011 | CN102034343A Data reporting method of power utilization information acquisition terminal based on random value |
| 04/27/2011 | CN102033205A System and method for detecting fault of power battery of vehicle |
| 04/27/2011 | CN102033188A Real-time diagnostic method for open circuit fault of phase-shifted full bridge converter |
| 04/27/2011 | CN102033184A Voltage distribution wireless measurement system of lightning arrester |
| 04/27/2011 | CN102033178A Intelligent bus duct simulating, monitoring and analyzing system |
| 04/27/2011 | CN102033158A Method and device for measuring prospective short-circuit current |
| 04/27/2011 | CN102033157A Direct current micro voltage/micro current detection device and detection method thereof |
| 04/27/2011 | CN102033156A Zero-crossing detection circuit of ecological house |
| 04/27/2011 | CN102033155A Current detection circuit and method |
| 04/27/2011 | CN102033154A End shield current sampling device suitable for insulated online monitoring system of high-voltage capacitor bushing |
| 04/27/2011 | CN102033153A Detecting device for the midpoint voltage of a transistor half bridge circuit |
| 04/27/2011 | CN102033152A Assemblies and methods for sensing current through semiconductor device leads |
| 04/27/2011 | CN102033151A System and method for monitoring direct-current ground potential |
| 04/27/2011 | CN102033147A Method for manufacturing a fiber optic current sensor with inherent temperature compensation of the faraday effect |
| 04/27/2011 | CN102033145A Cantilever probe structure for providing heavy current and voltage potential measurement |
| 04/27/2011 | CN102032880A AC (alternating current) magneto-optical modulation wide angle detection device and method |
| 04/27/2011 | CN102032128A Detector for hand-operated high-voltage electroscope |
| 04/27/2011 | CN102029965A Passenger detection system |
| 04/27/2011 | CN101692103B Testing method of parameters and characteristics of lightning strike of electric transmission line |
| 04/27/2011 | CN101614775B Evaluation system of transformer state based on multisource information integration and evaluation method thereof |
| 04/27/2011 | CN101520474B Magnetic biasing on-line detection method for transformer based on single Hall current sensor |
| 04/26/2011 | US7932776 RF power transmission, modulation, and amplification embodiments |
| 04/26/2011 | US7932753 Potential converter circuit |
| 04/21/2011 | WO2011045677A2 Low power brown out detector |
| 04/21/2011 | WO2011044827A1 Self-diagnosis method and system for wireless data service device |
| 04/21/2011 | WO2011044767A1 Intelligent learning control method of standby power-saving controller |
| 04/21/2011 | US20110093224 Semiconductor device, semiconductor device testing method, and data processing system |
| 04/21/2011 | US20110089933 Combined electrical measurement device |
| 04/21/2011 | DE102010028150A1 Elektromotorsteuerungsvorrichtung A motor control apparatus |
| 04/21/2011 | DE102009049599A1 Power factor correction circuit for use in power supply unit, has secondary winding connected with measuring resistor at which voltage signal proportional to transmitted current is tappable |
| 04/21/2011 | DE102009048691A1 Gleichstrommessstelle zum Auffinden defekter PV-Module in einer PV-Anlage DC measuring point for finding defective PV modules in a PV system |
| 04/21/2011 | DE102009045756A1 Verfahren und Vorrichtung zur Kontrolle der Berechtigung von Aufladevorgängen elektrisch betriebener Fahrzeuge Method and apparatus for controlling the authorization of battery recharges electric vehicles |
| 04/21/2011 | DE102009034595A1 Verfahren zur Diagnose von Stromsensoren einer Drehfeldmaschine während deren Betriebs A method for the diagnosis of current sensors of a rotary electric machine during operation thereof |
| 04/21/2011 | DE102008015999B4 Übertragungsweg - Prüfverfahren für eine Gefahrenmeldeanlage Transmission - Test methods for an alarm system |
| 04/20/2011 | EP2312327A1 Method and device for measuring the electric current supplied by a high-voltage line to a railway vehicle |
| 04/20/2011 | CN201805364U Output-side direct current (DC) content detection and control circuit for grid-connected inverter |
| 04/20/2011 | CN201805094U 多功能安全插座 Multifunction Secure Sockets |
| 04/20/2011 | CN201804241U Electromobile charging post local monitoring system with GPS (Global Position System) positioning function |
| 04/20/2011 | CN201804090U DC motor simulation detection fixture |
| 04/20/2011 | CN201804069U Electric appliance leakage monitor with indicator alarming function |
| 04/20/2011 | CN201804056U Main loop current measurement device for high-voltage direct-current power transmission converter valve |
| 04/20/2011 | CN201804055U Voltage measuring device for high-voltage DC transmission valve assembly |
| 04/20/2011 | CN201804054U Failure detection system for alternating-current switch machine |
| 04/20/2011 | CN201804043U Synthetic electric energy detection instrument for DC electric power |
| 04/20/2011 | CN201804042U Welding machine fault detector |
| 04/20/2011 | CN201804041U Voltage tester |
| 04/20/2011 | CN201804040U Test pencil |
| 04/20/2011 | CN201804039U Crash-proof test pencil |
| 04/20/2011 | CN201804038U Voltage and current measuring device of entire car |
| 04/20/2011 | CN201804037U Power supply distribution unit |
| 04/20/2011 | CN201804026U Retractable pincer-like galvanometer |
| 04/20/2011 | CN201803857U On-line monitoring and diagnosing system for mechanical properties of GIS (Gas-Insulated Metal-Enclosed Switchgear) control mechanism |
| 04/20/2011 | CN201798650U Electric leakage alarm foot tub |
| 04/20/2011 | CN201798084U Electricity measuring shoe |
| 04/20/2011 | CN102027382A Techniques for measuring voltages in a circuit |
| 04/20/2011 | CN102025810A Mobile phone with voltmeter function |
| 04/20/2011 | CN102024416A Field emission display, drive module and drive method thereof |
| 04/20/2011 | CN102024314A Method and device for replacing rotating platform signal slip ring |
| 04/20/2011 | CN102023286A Zero current detection circuit for series resonance charging source and design method thereof |
| 04/20/2011 | CN102023285A Undervoltage detection circuit of power supply |
| 04/20/2011 | CN102023283A On-line measuring method of accumulator capacity |
| 04/20/2011 | CN102023282A Positioning method and equipment for detecting solar cell plate |
| 04/20/2011 | CN102023279A Arrester insulation aging test device and test method |
| 04/20/2011 | CN102023267A High-power detection platform for charger |
| 04/20/2011 | CN102023264A Method for monitoring state of metal oxide lightning arrester |
| 04/20/2011 | CN102023262A Method for recognizing arc grounding overvoltage of 35 kV power grid |
| 04/20/2011 | CN102023255A Temperature rise detection method for low-voltage power distribution device |
| 04/20/2011 | CN102023254A Antenna detection circuit and relative digital broadcast receiver thereof |
| 04/20/2011 | CN102023253A Lightning-proof monitoring warning system |
| 04/20/2011 | CN102023252A Current sensor |
| 04/20/2011 | CN102023251A Current detecting method, inverter device and convertor device using the same |
| 04/20/2011 | CN102023250A Metal oxide arrester monitoring device |
| 04/20/2011 | CN102023249A Method for performing preventive test without detaching high-voltage lead of 220-kV zinc oxide arrestor |
| 04/20/2011 | CN102023248A Direct current bus voltage sampling device of medium-voltage frequency converter |
| 04/20/2011 | CN101685110B Variable frequency memory alternating current acousto-optic electroscope |
| 04/20/2011 | CN101653310B Eyelash curler and heating control method thereof |
| 04/20/2011 | CN101629973B High-precision current sampling circuit without operational amplifier for low voltage power supply |
| 04/20/2011 | CN101609111B Voltage flicker modulating wave detection method |
| 04/20/2011 | CN101362247B Gas shield tungsten electrode argon-arc welding voltage measurement circuit |
| 04/20/2011 | CN101266265B Method for detecting high voltage frequency converter electric network voltage phase |
| 04/20/2011 | CN101180546B Method of forming current sensing circuit and structure thereof |
| 04/20/2011 | CN101154808B Surge protector for implementing real-time working condition data storage |