| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 04/24/2013 | CN102157965B Charging control device and voltage detecting method for eliminating switch internal resistance by voltage clamping |
| 04/24/2013 | CN102055353B Three-switch double-capacitor three-phase alternating current (AC)-direct current (DC) converter with high power factor |
| 04/24/2013 | CN102055352B Three-phase AC-DC (alternating current-direct current) converter having three-switch, single-capacitor and high power factor |
| 04/24/2013 | CN102053195B Current sampling system and method for calculating offset voltage of operational amplifier |
| 04/24/2013 | CN102043078B Accurate current detection circuit with ultra-low voltage supply |
| 04/24/2013 | CN102005726B Method for identifying magnetizing inrush current and external fault CT (current transformer) saturation based on waveform discontinuous characteristic |
| 04/24/2013 | CN101963835B Electronic equipment and method for dynamically allocating USB port power |
| 04/24/2013 | CN101726649B Signal detection circuit, emergency power switching device and emergency light |
| 04/24/2013 | CN101609117B Testing meter and testing method thereof |
| 04/23/2013 | US8429433 Dynamically adjusting an operating state of a data processing system running under a power cap |
| 04/23/2013 | US8427132 Voltage detection circuit and method thereof |
| 04/18/2013 | US20130096856 Systems and methods for adaptive possible power determinaton in power generating systems |
| 04/18/2013 | US20130093808 Element substrate, printhead and printing apparatus |
| 04/18/2013 | US20130093411 Circuit arrangement |
| 04/18/2013 | US20130093410 High-voltage sensor with axially overlapping electrodes and local field sensors |
| 04/18/2013 | US20130093409 Optical current transformer for gas-insulated apparatus |
| 04/18/2013 | DE10242791B4 Verfahren und elektrische Schaltung zur Ermittlung eines mittleren Stroms durch ein elektromagnetisches Stellglied Method and electrical circuit for determining an average current through an electromagnetic actuator |
| 04/18/2013 | DE102012109749A1 Verfahren und Vorrichtung zum Erkennen eines Lichtbogens in einem Gleichstromkreis Method and apparatus for detecting an arc in a direct current circuit |
| 04/18/2013 | DE102012109745A1 Schaltungsanordnung Circuitry |
| 04/18/2013 | DE102011115908A1 Circuit arrangement of battery management system (BMS) for energy storage device used in electric bicycle, transmits information of current and temperature of battery to component within electric drive through communication line |
| 04/18/2013 | DE102011080039A1 Stromsensoranordnung Flow sensor assembly |
| 04/18/2013 | DE102008051414B4 Strommessung mit geschalteten Kondensatoren Current measurement with switched capacitors |
| 04/17/2013 | EP2581752A2 Device for visualising electric connection states |
| 04/17/2013 | EP2581751A2 Arbitrary multiband overlay mixer apparatus and method for bandwidth multiplication. |
| 04/17/2013 | CN202889220U Switching power supply with input overvoltage detection and alarm circuit |
| 04/17/2013 | CN202888823U A novel signal lightning protection device |
| 04/17/2013 | CN202888799U Intelligent reactive compensation measuring and control device |
| 04/17/2013 | CN202888791U Load controller based on zero-cross starting overvoltage protection |
| 04/17/2013 | CN202886958U Wireless electric quantity monitor controller based on Z-wave |
| 04/17/2013 | CN202886908U Voltage detection device of micro-control unit |
| 04/17/2013 | CN202886615U Overload detection circuit for flasher radiation detector |
| 04/17/2013 | CN202886508U Intelligent distribution network failure monitoring terminal |
| 04/17/2013 | CN202886498U Load broken line detector |
| 04/17/2013 | CN202886485U Remote monitoring device for electrified railway high-voltage lightning arrester |
| 04/17/2013 | CN202886483U Low-frequency large-capacitance measuring device |
| 04/17/2013 | CN202886472U Electric switch assistant device for distributing lines |
| 04/17/2013 | CN202886462U Electricity stealing detection device capable of preventing external strong magnetic interference |
| 04/17/2013 | CN202886461U An AC voltage detecting device |
| 04/17/2013 | CN202886460U PCIE video card maintenance tester |
| 04/17/2013 | CN202886459U Digital zero cross detection circuit and household air-conditioner |
| 04/17/2013 | CN202886458U Real-time detection and alarm device for bypass flexible cable running current |
| 04/17/2013 | CN202886457U Lithium ion battery power alarm device |
| 04/17/2013 | CN202886456U Capacitor voltage transformer fault monitoring instrument |
| 04/17/2013 | CN202886455U Intelligent voltage warning instrument |
| 04/17/2013 | CN202886454U Protective device of high-voltage electroscope |
| 04/17/2013 | CN202886453U Electronic electricity test pen |
| 04/17/2013 | CN202886452U 10kV electrical network live-line indicator |
| 04/17/2013 | CN202886451U Current detection sensor for extended-range motorcycle |
| 04/17/2013 | CN202886450U Output voltage detection circuit of DC/DC conversion circuit |
| 04/17/2013 | CN202886449U On-line monitor for direct current on neutral point down conductor of transformer |
| 04/17/2013 | CN202886448U Current detection circuit |
| 04/17/2013 | CN202886447U A device achieving four-wire system measurement by using a two-wire system |
| 04/17/2013 | CN202886446U Monitoring system for grounding current of high-voltage cable sheath |
| 04/17/2013 | CN202886445U Voltage type current transformer for data detection of high voltage lines |
| 04/17/2013 | CN202886443U Voltage sampling circuit |
| 04/17/2013 | CN202886439U Photoelectric isolation type transformation-ratio-adjustable voltage display device |
| 04/17/2013 | CN103052886A Method and apparatus for wave detection |
| 04/17/2013 | CN103050941A Morphological gradient-based identification method for magnetizing inrush current of transformer |
| 04/17/2013 | CN103050902A Switch cabinet with medium-voltage and high-voltage potential indicator |
| 04/17/2013 | CN103048591A Power grid environment monitoring circuit |
| 04/17/2013 | CN103048577A Wireless sensing lightning arrester online monitoring system |
| 04/17/2013 | CN103048556A On-line monitoring device of lightning arrester of touch screen type switch cabinet with memory |
| 04/17/2013 | CN103048534A Modular multi-level flexible direct-current sub-module voltage acquiring circuit and realizing method thereof |
| 04/17/2013 | CN103048533A Switch cabinet online monitor easy in information acquisition |
| 04/17/2013 | CN103048532A Transient waveform full voltage fault recording online detection device and working method thereof |
| 04/17/2013 | CN103048531A Current sensor of CAN (controller area network) bus interface for mine |
| 04/17/2013 | CN103048530A Current calibration device of digital power supply |
| 04/17/2013 | CN103048529A Discharge counter with simple structure and capable of remotely transmitting data for lightning arrester |
| 04/17/2013 | CN103048528A Precisely counting discharge counter for lightning rod |
| 04/17/2013 | CN103048527A Electrifying display and temperature detecting device for ring main unit |
| 04/17/2013 | CN103048526A High-voltage electrifying display device |
| 04/17/2013 | CN103048525A Equipotential high-voltage potential indicator |
| 04/17/2013 | CN103048524A Electroprobe |
| 04/17/2013 | CN103048523A Live display device of looped network cabinet |
| 04/17/2013 | CN103048522A Diagnosis method of low temperature plasma density parameter at atmospheric pressure |
| 04/17/2013 | CN103048521A Voltage detection device of automatic change-over switch |
| 04/17/2013 | CN103048520A Atomic current sensor |
| 04/17/2013 | CN103048519A Measuring apparatus and method for corona initial current |
| 04/17/2013 | CN103048518A Small type current clamp for checking of live line measurement scene |
| 04/17/2013 | CN103048517A Method for measuring electrode current through electrode current measuring device for low voltage compensation of submerged arc furnace |
| 04/17/2013 | CN103048516A Electric current transducer |
| 04/17/2013 | CN103048515A Voltage tester having alternatively attachable or separable probes |
| 04/17/2013 | CN103048514A Voltage tester having alternatively attachable or separable probes |
| 04/17/2013 | CN103048513A Self-insurance wide-frequency voltage signal collecting device |
| 04/17/2013 | CN103048512A Sensing optical fiber ring and Sagnac type all-fiber current transformer |
| 04/17/2013 | CN102338833B Method for detecting abnormality of urban power supply quickly |
| 04/17/2013 | CN102135556B 检测电路以及同步整流电路 And a synchronous rectification circuit detecting circuit |
| 04/17/2013 | CN102109550B Overvoltage and excess temperature detection circuit |
| 04/17/2013 | CN102095915B Voltage signal detecting device using multiple synchronous reference coordinate system transformation |
| 04/17/2013 | CN102034344B On-line detection and diagnosis device and method for voltage signal of photoelectric isolating type excess channel |
| 04/17/2013 | CN101806826B Input voltage detection circuit and power supply circuit |
| 04/17/2013 | CN101788603B VFTO measuring system |
| 04/17/2013 | CN101688888B Increased reliability in the processing of digital signals |
| 04/17/2013 | CN101622544B Electrically insulated current measuring device, electronic trigger, and circuit breaker comprising such a device |
| 04/17/2013 | CN101441251B Battery charge/discharge current detection apparatus |
| 04/16/2013 | US8423308 Multi-circuit direct current monitor with Modbus serial output |
| 04/16/2013 | US8421441 Current-controlled semiconductor device and control unit using the same |
| 04/16/2013 | US8421439 Current detecting and indicating device |
| 04/16/2013 | US8421438 Apparatus and method for diffusion sensing |
| 04/11/2013 | WO2013050670A1 Control module for an ion implanter in the plasma immersion mode |