| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 11/28/2012 | CN102801283A 电源供应电路 Power supply circuits |
| 11/28/2012 | CN102801142A Insulated gate bipolar transistor-driven protective circuit |
| 11/28/2012 | CN102800526A Electro-magnetic contactor and electro-magnetic contactor monitoring system |
| 11/28/2012 | CN102798800A Asymmetric capacitance and resistance increasing and injecting method of zero-sequence current |
| 11/28/2012 | CN102798786A Universal intelligent lightning protection monitoring module and method |
| 11/28/2012 | CN102798785A Detection method for inrush current differential harmonic of transformer |
| 11/28/2012 | CN102798755A Electric power metering device and electric power metering system using the same |
| 11/28/2012 | CN102798753A Short-circuit detection method and device |
| 11/28/2012 | CN102798752A Hall current sensor electronic circuit |
| 11/28/2012 | CN102798751A Novel voltage stability detection method |
| 11/28/2012 | CN102798750A Method and system for measuring half-wave voltage of electro-optical modulator |
| 11/28/2012 | CN102798749A Current detection circuit |
| 11/28/2012 | CN102798748A Method for calculating amplitude and phase of alternating-voltage signal based on iteration Fourier transform |
| 11/28/2012 | CN102798747A Wireless current sensor |
| 11/28/2012 | CN102082463B Method for realizing redundancy of 4-20-mA current output in distributed control system (DCS) and circuit |
| 11/28/2012 | CN102004227B High power battery detection circuit of electric vehicle |
| 11/28/2012 | CN101995326B Test bed for testing comprehensive performance of LED modules |
| 11/28/2012 | CN101986164B Method for extracting resistive current of metal oxide arrester (MOA) |
| 11/28/2012 | CN101957398B Method for detecting and calculating primary time constant of power grid based on electromechanical and electromagnetic transient hybrid simulation technology |
| 11/28/2012 | CN101943716B Capacitance measurement circuit and method |
| 11/28/2012 | CN101895089B High voltage electriferous display locking device based on fundamental wave and phase |
| 11/28/2012 | CN101860001B Switch power supply current detection circuit |
| 11/28/2012 | CN101740964B High voltage connector and method having integrated voltage measurement probe points |
| 11/28/2012 | CN101738526B Direct current output voltage test circuit for power factor correction control circuit |
| 11/28/2012 | CN101627312B Ac electric quantity measuring device |
| 11/28/2012 | CN101512351B Circuit for continuously measuring discontinuous metal insulator transition of mit element and mit sensor using the same |
| 11/27/2012 | US8321165 Information processing apparatus, voltage acceptance test system, and voltage acceptance test method |
| 11/27/2012 | US8319507 System and method for sensing an amplifier load current |
| 11/27/2012 | US8319494 Pipeline inspection tool with double spiral EMAT sensor array |
| 11/24/2012 | CA2778315A1 Wireless current sensor |
| 11/22/2012 | WO2012156016A1 Differential voltage measurement |
| 11/22/2012 | US20120296785 Voltage-dependent meter |
| 11/22/2012 | US20120293806 Optical fibre sensor assembly |
| 11/22/2012 | US20120293270 Method and system for testing oscillator circuit |
| 11/22/2012 | US20120293161 Alternating current voltage detection circuit |
| 11/22/2012 | US20120293160 Field-effect transistor including movable gate electrode and sensor device including field-effect transistor |
| 11/22/2012 | US20120293159 Voltage testing circuit |
| 11/22/2012 | DE102012200530A1 Verfahren zur Erfassung einer Verschlechterung eines Permanentmagneten in einem Elektromotor und System für das Verfahren. A method for detecting a deterioration of a permanent magnets in an electric motor and system for the process. |
| 11/22/2012 | DE102011079159A1 Vorrichtung und verfahren zum bestimmen eines zustandsparameters einer batterie Apparatus and method for determining a state parameters of a battery |
| 11/22/2012 | DE102011050539A1 Messvorrichtung mit einem sicheren Messkanal Measuring device with a safe measuring channel |
| 11/22/2012 | DE102010055626B4 Schaltungsanordnung und Verfahren zum Erfassen einer von einer Batterie erzeugten Batteriespannung mit einem Spannungssensor Circuit arrangement and method for detecting a battery voltage generated from a battery with a voltage sensor |
| 11/22/2012 | CA2835188A1 Method and apparatus for detection of lvdt core fallout condition |
| 11/21/2012 | CN202550481U Abnormal voltage protection and display circuit and constant speed air conditioner |
| 11/21/2012 | CN202550301U Array cabinet and monitoring and warning device |
| 11/21/2012 | CN202548225U Four-channel oscillographic alternating current component recorder |
| 11/21/2012 | CN202548207U Zinc oxide arrester energization tester |
| 11/21/2012 | CN202548206U Voltage monitor and data analysis management system |
| 11/21/2012 | CN202548205U Collecting and synchronizing device for welding current |
| 11/21/2012 | CN202548204U Novel lightning arrester discharge counter |
| 11/21/2012 | CN202548203U Under-voltage reminding device |
| 11/21/2012 | CN202548202U Over-current detector for starting current of water tank fan |
| 11/21/2012 | CN202548201U High voltage charged display with nuclear phase function |
| 11/21/2012 | CN202548200U Photoelectric type high-voltage potential indicator |
| 11/21/2012 | CN202548199U Anti-releasing high-voltage electroscope |
| 11/21/2012 | CN202548198U High-voltage live display |
| 11/21/2012 | CN202548197U Live wire tester |
| 11/21/2012 | CN202548196U DC traction power supply rail live-line detection device |
| 11/21/2012 | CN202548195U Portable inactive direct-current test device for power cable |
| 11/21/2012 | CN202548194U Device for measuring high-voltage voltage by adopting transformer bushing |
| 11/21/2012 | CN202548193U Photoelectric high-voltage current monitoring and overcurrent protector |
| 11/21/2012 | CN202548192U Power input impulse current testing circuit |
| 11/21/2012 | CN202548191U Alternating-current voltage sampling device used for power factor correction |
| 11/21/2012 | CN202548190U Circuit for simply measuring voltages of each single battery in 16 battery packs |
| 11/21/2012 | CN202548189U Current acquisition device for photovoltaic (PV) bus |
| 11/21/2012 | CN202548188U Multifunctional no-voltage timing device |
| 11/21/2012 | CN202548187U Monitoring system of qualified rate of supply voltage of power grid |
| 11/21/2012 | CN202548186U System capable of accurately measuring voltage and current simultaneously and instrument adopting system |
| 11/21/2012 | CN202548185U Voltage detection circuit of multiple batteries in series connection |
| 11/21/2012 | CN202548184U Optical current transformer used for intelligent substation |
| 11/21/2012 | CN202548183U Single chip current sensor |
| 11/21/2012 | CN202548182U Output signal distant transmission apparatus of power system stabilizer |
| 11/21/2012 | CN202548181U Circuit for measuring voltage of single battery in six-battery serially connected group |
| 11/21/2012 | CN202548180U Electrolysis unit electrostatic detection device |
| 11/21/2012 | CN202548178U Support column type optical current transformer assembly |
| 11/21/2012 | CN202547759U Wireless remote cheating prevention monitoring system of electronic scale |
| 11/21/2012 | CN102788965A Voltage modulation ratio verifying and measuring method |
| 11/21/2012 | CN102788932A Identification method of lightning shielding failure of electric transmission line |
| 11/21/2012 | CN102788930A Digital insulation monitoring sensor and method for testing leakage current |
| 11/21/2012 | CN102788906A High-frequency impedance tester |
| 11/21/2012 | CN102788897A Optical fiber watt transducer using reflective quasi-reciprocal light path |
| 11/21/2012 | CN102788896A Socket current detection device |
| 11/21/2012 | CN102788895A Alternating voltage detection circuit |
| 11/21/2012 | CN102788894A Voltage detection circuit |
| 11/21/2012 | CN102788893A System, device, and method for detecting electrical discharges on a structure |
| 11/21/2012 | CN102157948B Static var compensation device current detection method based on transient power balance |
| 11/21/2012 | CN102023254B Antenna detection circuit and relative digital broadcast receiver thereof |
| 11/21/2012 | CN102004540B Laptop |
| 11/21/2012 | CN101976723B Manufacture method of current isolator |
| 11/21/2012 | CN101968506B Alternating current sampling processing method and device |
| 11/21/2012 | CN101893654B Method and system for measuring transient overvoltage of high voltage power network through distribution capacitance method |
| 11/21/2012 | CN101865947B AC input detection circuit and detection method of power supply of flat television |
| 11/21/2012 | CN101806821B Current sensor |
| 11/21/2012 | CN101726656B Harmonic current detection and filtration method and device of active power filter |
| 11/21/2012 | CN101419250B Voltage test device |
| 11/20/2012 | US8314606 Current sensing and measuring method and apparatus |
| 11/20/2012 | US8314605 Medical treatment device with tool recognition |
| 11/20/2012 | US8314603 Network cable with tracer optical waveguide |
| 11/15/2012 | WO2012154877A1 Collection of atmospheric ions |
| 11/15/2012 | WO2012152055A1 Accurate waveform measuring method for lightning strike-induced malfunctions of electrical transmission line |
| 11/15/2012 | WO2012098523A3 Converging algorithm for real-time battery prediction |