| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 01/12/2011 | CN101943732A Frequency converter test platform |
| 01/12/2011 | CN101943727A Online detection device of surge protector |
| 01/12/2011 | CN101943725A Online detection device of SPD (Surge Protective Device) |
| 01/12/2011 | CN101943724A Online detection device of surge protective device |
| 01/12/2011 | CN101943723A Online detection device of surge protector |
| 01/12/2011 | CN101943722A On-line detecting device for surge protector |
| 01/12/2011 | CN101943716A Capacitance measurement circuit and method |
| 01/12/2011 | CN101943715A A hall effect current sensor system and associated flip-chip packaging |
| 01/12/2011 | CN101943714A Precise detection method of thyristor AC signal zero passage time sequence and device |
| 01/12/2011 | CN101650230B Multifunctional probe for plasma diagnosis |
| 01/12/2011 | CN101609108B Method for measuring voltage or current signal and sensor for realizing method |
| 01/12/2011 | CN101592686B Indicator for preventing mistakenly entering charged chamber |
| 01/12/2011 | CN101520491B Testing method and device for short-circuit and over-voltage protection of switch power supply output |
| 01/12/2011 | CN101476974B Vacuum fluorescent display luminous efficiency computing method |
| 01/12/2011 | CN101340045B Method and apparatus capable of realizing safe hot plug of secondary current loop of transforming plant |
| 01/12/2011 | CN101211543B Liquid crystal device driving circuit and method |
| 01/11/2011 | US7870337 Power-aware line intervention for a multiprocessor snoop coherency protocol |
| 01/11/2011 | US7868663 Receiver circuit for use in a semiconductor integrated circuit |
| 01/06/2011 | WO2011002174A2 Signal-processing method for detecting a quench of a superconducting magnetic operating current |
| 01/06/2011 | WO2011001826A1 Voltage detector and manufacturing method thereof |
| 01/06/2011 | WO2011000754A1 Method and device for monitoring the state of a network |
| 01/06/2011 | WO2011000101A1 Channel, system and method for monitoring voltages |
| 01/06/2011 | WO2010130275A3 Electrical power meter |
| 01/06/2011 | WO2010102264A3 Statistical formal activity analysis with consideration of temporal and spatial correlations |
| 01/06/2011 | US20110001515 Comparator with self-limiting positive feedback |
| 01/06/2011 | US20110001467 Method optimizing driving voltage and electronic system |
| 01/06/2011 | CA2766723A1 Method and device for monitoring the state of a network |
| 01/05/2011 | EP2269080A1 Method and apparatus for analyzing waveform signals of a power system |
| 01/05/2011 | EP2269079A1 Method and apparatus for measuring ac voltages |
| 01/05/2011 | CN201699604U Monitor of energy feedback inverting system of power locomotive |
| 01/05/2011 | CN201699389U Pulsating direct-current electricity-leakage and overvoltage protection device for electricity-leakage protection switch |
| 01/05/2011 | CN201699388U Domestic electricity real-time monitoring and protection device |
| 01/05/2011 | CN201698011U Comprehensive tester of portable direct-current system |
| 01/05/2011 | CN201698004U Electric vehicle side support switch detector |
| 01/05/2011 | CN201698000U Automatic testing system of radio-frequency power amplifier based on mixed bus |
| 01/05/2011 | CN201697996U Withstand voltage and leakage testing device for insulated safety device |
| 01/05/2011 | CN201697993U Distribution network single-phase grounded fault live positioning device |
| 01/05/2011 | CN201697985U Intelligent safety detector for three-phase equipment |
| 01/05/2011 | CN201697982U Multifunctional household appliance maintenance comprehensive testing instrument |
| 01/05/2011 | CN201697980U Measuring display device for saving energy by electric appliances |
| 01/05/2011 | CN201697964U Power grid load operation waveform site oscillograph |
| 01/05/2011 | CN201697963U 电压监测管理终端 Voltage monitoring management terminal |
| 01/05/2011 | CN201697962U Integrated intelligent testing and controlling module |
| 01/05/2011 | CN201697961U System for measuring transient over-voltage of high-voltage power grid by adopting distributed capacitance method |
| 01/05/2011 | CN201697960U Lightning current sensor with iron core |
| 01/05/2011 | CN201697959U Industrial electric energy network node sensor |
| 01/05/2011 | CN201697958U 电池电压测量装置 A battery voltage measurement device |
| 01/05/2011 | CN201697957U Multi-point voltage detector |
| 01/05/2011 | CN201697956U Real-time on-line detection device for discharge current of ADSS optical cable |
| 01/05/2011 | CN201697948U Reset circuit for electric energy meter singlechip |
| 01/05/2011 | CN201695090U Cathodic protection test pile and cathodic protection monitoring system |
| 01/05/2011 | CN101937069A Voltage characteristic detection system and method of SOC (System On Chip) intelligent electric meter |
| 01/05/2011 | CN101937038A Intelligent multi-core cable harness detection device |
| 01/05/2011 | CN101937030A Substrate inspection method |
| 01/05/2011 | CN101937023A Insulation on-line monitoring system |
| 01/05/2011 | CN101937018A Device and method for monitoring power quality harmonic wave and overvoltage on line |
| 01/05/2011 | CN101937016A Low voltage promoting device |
| 01/05/2011 | CN101937015A Device for online monitoring lightning current and lightning voltage waveform parameters of overhead transmission line |
| 01/05/2011 | CN101937014A Adaptive current detection circuit applied to wide-conversion ratio boost converter |
| 01/05/2011 | CN101937013A Capacitor residual voltage detection device |
| 01/05/2011 | CN101609110B Signal extraction method of resonant tunneling piezoresistive micro-accelerometer |
| 01/05/2011 | CN101515002B Thin film type thermoelectric converter and a measuring method |
| 01/05/2011 | CN101478174B State detection system and method for DC electric power |
| 01/05/2011 | CN101430348B State detection apparatus and state detection method |
| 01/05/2011 | CN101051609B High voltage protective interlock for ion injector |
| 01/05/2011 | CN101006348B Power quality monitory |
| 01/04/2011 | US7865307 Method and apparatus for real time clock (RTC) brownout detection |
| 01/04/2011 | US7863975 Method for calibrating a power amplifier and device using the same |
| 01/04/2011 | US7863885 Sondes for locating underground pipes and conduits |
| 01/04/2011 | CA2379639C Method and apparatus for detecting slow and small changes of electrical signals including the sign of the changes, and circuit arrangement for the exact detection of the peak value of an alternating voltage |
| 01/04/2011 | CA2349145C Point of sale (pos) terminal security system |
| 12/30/2010 | US20100332160 Method for determining a radiation measurement for thermal radiation, arc furnace, a signal processing device programme code and storage medium for carrying out said method |
| 12/30/2010 | US20100327889 Position detecting device |
| 12/30/2010 | US20100327887 Chopper-stabilized instrumentation amplifier for impedance measurement |
| 12/30/2010 | DE10120142B4 Detektorschaltung zur Detektion von Spannungs-Spikes Detection circuit for detecting voltage spikes |
| 12/29/2010 | WO2010151835A2 Power distribution apparatus with input and output power sensing and method of use |
| 12/29/2010 | EP2267465A1 Device and method for indicating electrical faults, assembly and electric board comprising such a device |
| 12/29/2010 | CN201690221U Motor protection device |
| 12/29/2010 | CN201690211U Rapid detecting and protecting device for direct-current traction power supplying return current rail electric potential |
| 12/29/2010 | CN201690205U Zero-crossing detection circuit |
| 12/29/2010 | CN201690203U Vehicle static debugging power supply device for urban rail |
| 12/29/2010 | CN201689775U Manganin mutual inductor preventing alternating magnetic field |
| 12/29/2010 | CN201689147U Device for monitoring triggering angle of rectifier bridge of thyristor |
| 12/29/2010 | CN201689145U Wireless online monitoring device for lightning arrester |
| 12/29/2010 | CN201689129U Power-down detecting device |
| 12/29/2010 | CN201689128U High-voltage looped network cabinet, junction box secondary side special-purpose finger type adjustable clectroscope |
| 12/29/2010 | CN201689127U Novel electroscope |
| 12/29/2010 | CN201689126U Optical fiber fabry-perot current sensor |
| 12/29/2010 | CN201689125U Zero magnetic flux current sensor |
| 12/29/2010 | CN201686746U Pile for protecting and testing cathodes |
| 12/29/2010 | CN101931223A Intelligent monitor-type surge protection device |
| 12/29/2010 | CN101931046A Piezoelectric thin film element and manufacturing method of the piezoelectric thin film element, piezoelectric thin film device |
| 12/29/2010 | CN101930663A Iron core and clamp earthing current online monitoring system |
| 12/29/2010 | CN101930227A State detection and energy-saving control system for electric equipment and control method thereof |
| 12/29/2010 | CN101930057A Method and system for detecting faults of power batteries |
| 12/29/2010 | CN101930053A Single-lamp multistate digital transmitting and receiving test pencil |
| 12/29/2010 | CN101930032A Method for measuring frequency dependent capacitive loads using configurable psro structure and circuit thereof |
| 12/29/2010 | CN101930024A Partial discharge counter for diagnosis of gas insulated switchgear |
| 12/29/2010 | CN101930023A CPU voltage testing system and method |
| 12/29/2010 | CN101930022A Current measurement circuit and measuring method thereof |