| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
|---|
| 05/11/2011 | CN201828599U Universal multifunctional demonstrating pen |
| 05/11/2011 | CN201828598U 跨步电压探测器 Step voltage detector |
| 05/11/2011 | CN201828597U Thermo-electromotive force measuring apparatus for thermoelectric material |
| 05/11/2011 | CN201828596U Series-connection voltage signal acquisition attenuating device |
| 05/11/2011 | CN201828594U Voltage monitoring and electricity stealing preventing wireless warning system for electricity meter box |
| 05/11/2011 | CN102057281A Method and device for current measurement in phase lines |
| 05/11/2011 | CN102057280A Power management connection devices and related methods |
| 05/11/2011 | CN102055353A Three-switch double-capacitor three-phase alternating current (AC)-direct current (DC) converter with high power factor |
| 05/11/2011 | CN102055352A Three-phase AC-DC (alternating current-direct current) converter having three-switch, single-capacitor and high power factor |
| 05/11/2011 | CN102055310A Power supply unit with functions of open loop protection and short circuit protection |
| 05/11/2011 | CN102055232A Storage battery charging and jointly outputting system of current-limiting power supply |
| 05/11/2011 | CN102055227A 电池充电器 Battery Charger |
| 05/11/2011 | CN102055212A Power supply for solar power supply wireless sensor network node and power supply method |
| 05/11/2011 | CN102053888A Self-checking method and system for arithmetic device |
| 05/11/2011 | CN102053229A Power detection device |
| 05/11/2011 | CN102053207A Circuit and method for testing semiconductor apparatus |
| 05/11/2011 | CN102053204A Uninterrupted testing method for 1mA voltage of 330kV metal zinc oxide arrester (MOA) |
| 05/11/2011 | CN102053203A Detection method and device for high-voltage power quality |
| 05/11/2011 | CN102053200A Power failure detection device |
| 05/11/2011 | CN102053199A Digital optical fiber current sensor |
| 05/11/2011 | CN102053198A Voltage detection circuit and method and electronic system |
| 05/11/2011 | CN102053197A Switch cue circuit during power failures |
| 05/11/2011 | CN102053196A Arc voltage testing device of pantograph catenary system |
| 05/11/2011 | CN102053195A Current sampling system and method for calculating offset voltage of operational amplifier |
| 05/11/2011 | CN102053194A Output current sensing device and method used in primary side of flyback converter |
| 05/11/2011 | CN102053193A Current sensor adopting differential coil structure |
| 05/11/2011 | CN102052943A Device for testing partial charge-to-mass ratio of fogging space in electrostatic spraying |
| 05/11/2011 | CN101629975B Relay contact-voltage measuring and conditioning circuit and measuring method |
| 05/11/2011 | CN101562405B Multifunctional high-voltage power supply |
| 05/11/2011 | CN101477144B Confirmation for filament emission current computing method of vacuum fluorescent display |
| 05/11/2011 | CN101446602B Voltage change ratio detector |
| 05/11/2011 | CN101425353B Non-residual pressure monitor for lightning arrester |
| 05/11/2011 | CN101403770B Direct current flux collection circuit and method |
| 05/11/2011 | CN101324655B Low cost batteries monomer battery voltage measuring circuit |
| 05/11/2011 | CN101236235B Accumulator battery set single battery voltage sampling apparatus and method |
| 05/11/2011 | CN101210940B On-line DC measuring system and method |
| 05/11/2011 | CN101034107B Three measuring ranges DC potentiometer |
| 05/10/2011 | US7940089 Peak-detect-and-hold circuit and method thereof using ramp sampling technique |
| 05/10/2011 | US7940039 Transformer meter and system for using same |
| 05/05/2011 | WO2011050975A1 Threshold crossing detection |
| 05/05/2011 | US20110102958 Electrical load center |
| 05/05/2011 | US20110102047 Radio Frequency (RF) Power Detector Suitable for Use in Automatic Gain Control (AGC) |
| 05/05/2011 | US20110101959 Current-controlled semiconductor device and control unit using the same |
| 05/05/2011 | US20110101956 Electricity Usage Monitor System |
| 05/05/2011 | DE112009001238T5 RMS-Detektor mit automatischer Verstärkungsregelung RMS detector with automatic gain control |
| 05/05/2011 | DE102010037237A1 Vorrichtung zum Messen von elektrischem Strom A device for measuring electric current |
| 05/05/2011 | DE102010031084A1 Schaltung und Verfahren zum Detektieren eines Kurzschlusses und einer Abtrennung eines Drehmelders für ein Hybridelektrofahrzeug Circuit and method for detecting a short circuit and a separation of a resolver for a hybrid electric vehicle |
| 05/05/2011 | CA2786187A1 Optical sensor assembly and method for measuring current in an electric power distribution system |
| 05/04/2011 | EP2317647A1 Threshold crossing detection |
| 05/04/2011 | CN201821255U 可控硅调功器 SCR Power Regulator |
| 05/04/2011 | CN201821081U Integrated alarm circuit breaker of explosionproof locomotive |
| 05/04/2011 | CN201820555U Ball electrode arrester with counter for urban rail transit contact network |
| 05/04/2011 | CN201819980U Battery voltage detection device |
| 05/04/2011 | CN201819976U Fuel metering system and metering method |
| 05/04/2011 | CN201819956U High-voltage loop detection system |
| 05/04/2011 | CN201819950U Voltage sag detecting device based on synchronous digital phase shifting |
| 05/04/2011 | CN201819949U Cable puncturing device |
| 05/04/2011 | CN201819948U Test pencil for testing vehicle circuits |
| 05/04/2011 | CN201819947U Lightning protection monitoring and alarming system |
| 05/04/2011 | CN201819946U 电阻测试仪 Resistance Tester |
| 05/04/2011 | CN201819945U Isolated direct current (DC) bus voltage detection circuit for inverter air-conditioner |
| 05/04/2011 | CN201819944U Iron core and clamp grounding current online monitoring system |
| 05/04/2011 | CN201819943U Wireless data transmission voltage and current sensor with electronic tag |
| 05/04/2011 | CN201816611U Device for collecting high-voltage signals of train |
| 05/04/2011 | CN102047558A Method for determining the offset of a periodic signal |
| 05/04/2011 | CN102047541A Current sensing circuit and switching regulator including the same |
| 05/04/2011 | CN102047469A Battery cell interconnection and voltage sensing assembly, and method for connecting battery cell assembly to the same |
| 05/04/2011 | CN102047128A Inverter current measurement using shunt resistor |
| 05/04/2011 | CN102045512A Multi-computer switcher, signal stretcher and audio/video signal detection method |
| 05/04/2011 | CN102044978A Power supply circuit and monitoring protection method thereof |
| 05/04/2011 | CN102044905A Electric energy system power supply device with switchable super capacitor for supplying electric energy |
| 05/04/2011 | CN102044458A Detection method of degree of damage of plasma |
| 05/04/2011 | CN102043094A Super-high-temperature high-voltage dust specific resistance measuring device |
| 05/04/2011 | CN102043090A Measurement system for frequency-shift signal parameter of track circuit |
| 05/04/2011 | CN102043089A Isolation type voltage sensor |
| 05/04/2011 | CN102043088A Overcurrent detection circuit |
| 05/04/2011 | CN102043087A External voltage monitor alarm device |
| 05/04/2011 | CN102043086A Method and device for monitoring supply power of induction heating device |
| 05/04/2011 | CN102043085A Ultrahigh voltage power grid and current on-load detector |
| 05/04/2011 | CN102043084A Method for detecting resistive current of lightning arrester |
| 05/04/2011 | CN102043083A Giant magnetoresistance array current sensor |
| 05/04/2011 | CN102043082A Conical capacitive transducer |
| 05/04/2011 | CN102043081A Method and apparatus for accurately measuring currents using on-chip sense resistors |
| 05/04/2011 | CN102043080A Current sampling method and current sampling circuit of high-frequency charger |
| 05/04/2011 | CN102043079A Arc characteristic detecting device and method |
| 05/04/2011 | CN102043078A Accurate current detection circuit with ultra-low voltage supply |
| 05/04/2011 | CN102042950A Method for measuring corrosion susceptibility of welded pipe groove by using microzone corrosion current density |
| 05/04/2011 | CN101692102B Power frequency zero-flux mini-current sensor for capacitive equipment dielectric loss on-line monitoring |
| 05/04/2011 | CN101639495B Method for testing action current of solenoid valve |
| 05/04/2011 | CN101614766B Circuit for eliminating voltage measurement error of high voltage standard capacitor divider |
| 05/04/2011 | CN101604006B Voltage detection circuit |
| 05/04/2011 | CN101470155B Current measuring apparatus |
| 05/04/2011 | CN101017184B Method for surveying generation source of electromagnetic waves, and current probe used therefor |
| 04/28/2011 | US20110095750 Method for measuring current in an electric power distribution system |
| 04/28/2011 | US20110095749 Optical sensor assembly for installation on a current carrying cable |
| 04/28/2011 | US20110095746 Closing of an hf cut-off member |
| 04/28/2011 | DE202009017022U1 Hybridelektronischer Stromwandler zur Strommessung in Energieversorgungsnetzen mit Gleich- oder Wechselstromsystemen Hybrid Electronic current transformers for current measurement in power supply systems with AC or DC systems |
| 04/27/2011 | EP2313953A1 Fault-current detection device |
| 04/27/2011 | EP2313789A1 True root-mean-square detection with a sub-threshold transistor bridge circuit |
| 04/27/2011 | EP2005201B1 Method for measuring an alternating current which is generated using inverters, and arrangement for carrying out the method |