| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 05/25/2011 | CN102072988A Access point voltage phase detection method of photovoltaic inverter by applying multiple zero-crossing points |
| 05/25/2011 | CN102072985A Portable electroscope |
| 05/25/2011 | CN102072984A Electricity testing handcart |
| 05/25/2011 | CN102072983A Method for judging voltage sag reason |
| 05/25/2011 | CN102072982A Device and system for acquiring very fast transient overvoltage sensing signal |
| 05/25/2011 | CN102072981A Surge current detection device |
| 05/25/2011 | CN102072980A Optical fiber temperature compensator of electronic current transformer |
| 05/25/2011 | CN102072976A Method and system for identifying electrical appliance state |
| 05/25/2011 | CN101587170B Method for early warning dangerous state of lithium battery and portable electronic device thereof |
| 05/25/2011 | CN101556465B Intelligent electrical controller |
| 05/25/2011 | CN101294996B Measuring circuit |
| 05/25/2011 | CN101252129B Semiconductor device |
| 05/24/2011 | US7949179 Shape measurement device and method thereof |
| 05/24/2011 | US7948228 Technique for measuring power source noise generated inside integrated circuit |
| 05/24/2011 | US7948225 Phase identification systems and methods |
| 05/19/2011 | WO2011058375A1 Current measuring apparatus |
| 05/19/2011 | WO2011031540A3 High linear fast peak detector |
| 05/19/2011 | US20110118913 railroad signaling and communication system using a fail-safe voltage sensor to verify trackside conditions in safety-critical railroad applications |
| 05/19/2011 | US20110115525 Device for detecting the peak value of a signal |
| 05/19/2011 | US20110115472 Control circuit for current detection |
| 05/19/2011 | US20110115471 Current Sensing and Measuring Method and Apparatus |
| 05/19/2011 | US20110115466 Current detection printed board, voltage detection printed board, current/voltage detection printed board, current/voltage detector, current detector and voltage detector |
| 05/19/2011 | US20110115465 High Voltage Test Terminal Having a Shock-Absorbing Insulator |
| 05/18/2011 | EP2321656A2 Method and apparatus for measuring direct currents flowing in an electric line |
| 05/18/2011 | CN201839087U Measurement control device |
| 05/18/2011 | CN201839014U Renewable electricity feedback device of lifter |
| 05/18/2011 | CN201838975U Overload monitoring device for distribution line |
| 05/18/2011 | CN201838922U Link rod |
| 05/18/2011 | CN201837712U Online monitoring device of HGIS (hybrid gas insulated switchgear) energy storage motor |
| 05/18/2011 | CN201837709U HGIS (hybrid gas insulated switchgear) on-off coil online monitoring device |
| 05/18/2011 | CN201837708U Intelligent tester of residual current protector |
| 05/18/2011 | CN201837674U Grid-connected photovoltaic power generation monitoring and analysis system |
| 05/18/2011 | CN201837673U Induction and electricity testing warner |
| 05/18/2011 | CN201837672U Electric test device with vacuum switch and cable connected |
| 05/18/2011 | CN201837671U Current density meter for electroplating |
| 05/18/2011 | CN201834989U Measuring tube for measuring internal voltage drop of aluminum electrolysis cell melt |
| 05/18/2011 | CN1967281B Method and apparatus for measuring critical current uniformity of practical length YBCO high-temperature superconductive material |
| 05/18/2011 | CN102066956A Electrical anomaly detection method and system |
| 05/18/2011 | CN102066954A A combined electrical measurement device |
| 05/18/2011 | CN102066953A Test and measurement device with a pistol-grip handle |
| 05/18/2011 | CN102064692A Output current detecting circuit and transmission circuit |
| 05/18/2011 | CN102064567A Method for solving virtual electricity of battery after voltage is low |
| 05/18/2011 | CN102064528A Transformer neutral point earth protection device |
| 05/18/2011 | CN102064524A Electrical power system desynchronization and rapid disconnection judging method |
| 05/18/2011 | CN102064518A High-sensitivity current measurement and control device |
| 05/18/2011 | CN102064407A Electrode connection device for solar module laying detection table |
| 05/18/2011 | CN102064028A Connecting device for electroscope and insulating bar |
| 05/18/2011 | CN102062840A Image capturing device and method for predicting remaining electric quantity of batteries of image capturing device |
| 05/18/2011 | CN102062830A Noncontact sampling method for leakage current of insulator |
| 05/18/2011 | CN102062823A Electric leakage protection device tester |
| 05/18/2011 | CN102062810A Detection circuit and method for zero crossing point of alternating current power supply |
| 05/18/2011 | CN102062809A Method for capturing and locking voltage zero-crossing point of power grid |
| 05/18/2011 | CN102062808A Front-end equipment power supply voltage detection circuit for video monitoring system, and electronic monitoring equipment |
| 05/18/2011 | CN102062807A Current measuring device and method |
| 05/18/2011 | CN102062806A Current detection technology for power amplification of rudder system |
| 05/18/2011 | CN102062805A Parameter detector of gas turbine generator set |
| 05/18/2011 | CN102062804A On-line monitoring device and method for field suppression process of silicon carbide nonlinear resistor |
| 05/18/2011 | CN102062803A Active current extraction method based on orthogonal sine wave integral modulation |
| 05/18/2011 | CN102062802A Two-path loaded current measuring circuit |
| 05/18/2011 | CN102062801A Circuit and method for sampling current of outdoor unit and air conditioner |
| 05/18/2011 | CN102062800A Temperature compensated fiber optic current or magnetic field sensor with insensitivity to variations in sensor parameters |
| 05/18/2011 | CN102062695A Endurance and performance detecting equipment of vehicle ignition lock |
| 05/18/2011 | CN102061940A Feed transducer for detecting differential mode leakage current of power cable |
| 05/18/2011 | CN101692401B Optical fiber current transformer with optical fiber temperature acquisition and temperature compensation |
| 05/18/2011 | CN101614763B Method and device for detecting battery information |
| 05/18/2011 | CN101566640B Electronic voltage transducer |
| 05/18/2011 | CN101388188B Source driver and noise suppression method thereof |
| 05/18/2011 | CN101349738B Method and apparatus for real time monitoring tandem type accumulator battery voltage |
| 05/18/2011 | CN101246195B System, device and method for electric arc fault detection |
| 05/18/2011 | CN101241038B Method for determining detection signal source sequence |
| 05/17/2011 | US7944196 RF detector with crest factor measurement |
| 05/17/2011 | US7944182 Adjustable battery charger for UPS |
| 05/12/2011 | US20110112783 Detecting device of the current distribution profile of a switching converter |
| 05/12/2011 | US20110112609 Automatic lead identification using electric field fingerprinting |
| 05/12/2011 | US20110109346 Apparatus and methodology for maximum power point tracking for a solar panel |
| 05/12/2011 | US20110109302 Presettable transducer for electrical quantities |
| 05/12/2011 | US20110109301 Device And Method For Measuring Current And Power In A Plug Or Receptacle |
| 05/12/2011 | US20110109299 Stable Fast Programming Scheme for Displays |
| 05/12/2011 | DE202011004187U1 Spannungsprüfsystem für Mittel- und Hochspannungsanlagen Voltage detection system for medium and high voltage systems |
| 05/12/2011 | DE112009001552T5 Verfahren zur Überwachung des Batteriefunktionszustands unter Verwendung von Batteriespannung während des Fahrzeugstarts Method for monitoring the functional condition of the battery by using the battery voltage during the vehicle start |
| 05/12/2011 | DE102009052632A1 Elektrische Schaltung zur Erzeugung elektrischer Energie An electrical circuit for producing electric energy |
| 05/12/2011 | DE102009050378A1 Vorrichtung zur Blitzstrommessung Apparatus for lightning current measurement |
| 05/11/2011 | EP2320547A2 Current-controlled semiconductor device and control unit using the same |
| 05/11/2011 | EP2319117A1 Method and device for numerically representing a voltage |
| 05/11/2011 | EP2318850A2 Arrangement for measuring at least one value of a voltage applied to an electronic component |
| 05/11/2011 | EP2318848A1 High signal level compliant input/output circuits |
| 05/11/2011 | CN201830135U Power adaptor with ultra-low standby power consumption |
| 05/11/2011 | CN201830024U Intelligent controller for logging power supply |
| 05/11/2011 | CN201829922U Alternating current and direct current overvoltage detecting and protecting circuit of relay tester |
| 05/11/2011 | CN201829827U High-voltage live display sampling circuit for microcomputer display and control device of switch cabinet |
| 05/11/2011 | CN201829168U Detection circuit for dead pixel of light emitting diode (LED) display screen |
| 05/11/2011 | CN201828676U Shielding prevention function detector for infrared anti-theft product |
| 05/11/2011 | CN201828624U Electric leakage detector |
| 05/11/2011 | CN201828616U Distribution substation load pre-alarming device |
| 05/11/2011 | CN201828605U 数字电压表 Digital voltmeter |
| 05/11/2011 | CN201828604U Direct-current insulation monitoring device |
| 05/11/2011 | CN201828603U Test pencil |
| 05/11/2011 | CN201828602U Power failure detection circuit with low power consumption |
| 05/11/2011 | CN201828601U Test pencil |
| 05/11/2011 | CN201828600U 试电笔 Test pencil |