| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 09/28/2011 | CN201993414U 一种高压接地在线监测预警装置 A high voltage grounding line monitoring and warning devices |
| 09/28/2011 | CN201993413U 剩余电流测试系统 Residual current testing system |
| 09/28/2011 | CN102200562A Power-supply ground detection device |
| 09/28/2011 | CN102200558A Starting-up/shutdown detection circuit |
| 09/28/2011 | CN102200547A Voltage detection method for TD wireless phone alarm |
| 09/28/2011 | CN102200546A Method and system for quickly processing current acquisition |
| 09/28/2011 | CN101769709B Analog circuit and method for detecting wire breaking of displacement sensor LVDT |
| 09/28/2011 | CN101713811B System for automatically testing parameters of quartz crystal oscillator |
| 09/28/2011 | CN101697430B Power control method based CT electricity getting device of high voltage transmission line |
| 09/28/2011 | CN101576582B Method for estimating electrode current according to transformer primary side and secondary side ampere-voltage and parameters thereof |
| 09/28/2011 | CN101501975B Low power wide dynamic range RMS- DC converter |
| 09/27/2011 | US8027182 Electric current measurement apparatus, voltage measurement apparatus and power supply apparatus |
| 09/27/2011 | US8026713 State detection device for detecting operation state of high-frequency heating apparatus |
| 09/27/2011 | US8026711 Measuring device and method for locating objects enclosed in a medium, using high-frequency electromagnetic signals |
| 09/22/2011 | WO2011113939A1 Method for measuring an electrical current and apparatus therefor |
| 09/22/2011 | WO2011079190A8 Dynamic load estimation of multiple branch circuits |
| 09/22/2011 | US20110231125 Aircraft structure testing device of the wire cutter type |
| 09/22/2011 | US20110230837 Infusion pump methods, systems and apparatus |
| 09/22/2011 | US20110228433 Overcurrent relay |
| 09/22/2011 | US20110227632 Charge pulse detecting circuit |
| 09/22/2011 | US20110227607 Sensor Circuit |
| 09/22/2011 | US20110226048 Diagnosis concept for valve controlled coolant bypass paths |
| 09/22/2011 | DE102010012154A1 Verfahren zum Überprüfen eines Zustands eines Stromkreises eines Kraftfahrzeugs A method for verifying a state of a circuit of a motor vehicle |
| 09/21/2011 | EP2366109A1 Method of monitoring the voltage of an electrical energy generating element of a battery |
| 09/21/2011 | CN201985747U 基于大电流法接地参数测量的并联变频电源 High current ground-based method parameter measurements parallel power inverter |
| 09/21/2011 | CN201984124U 干式变压器智能在线监测装置 Dry-type transformers intelligent online monitoring device |
| 09/21/2011 | CN201984123U 医院隔离供电系统监测装置 Hospital isolated power supply system monitoring devices |
| 09/21/2011 | CN201984120U 电能质量监测系统 Power Quality Monitoring System |
| 09/21/2011 | CN201984108U 一种测量埋地管道中直流电流的装置 A buried pipeline means for measuring DC current |
| 09/21/2011 | CN201984107U 一种预期短路电流测量装置 One kind of expected short-circuit current measurement device |
| 09/21/2011 | CN201984106U 智能雷电计数器 Smart lightning counter |
| 09/21/2011 | CN201984105U 一种带电显示信号取样装置 A charged display signal sampling device |
| 09/21/2011 | CN201984104U 用电设备的大电流检测装置 High-current detection device electrical equipment |
| 09/21/2011 | CN201984103U 避雷器泄漏电流在线检测装置 Online arrester leakage current detection device |
| 09/21/2011 | CN201979443U Special wrench for electricians |
| 09/21/2011 | CN201976827U 无线音视频通信兼高压报警多功能安全帽 Wireless audio and video communication and high pressure alarm multifunction helmet |
| 09/21/2011 | CN102195475A Semiconductor device |
| 09/21/2011 | CN102193050A Positioning system for fault of direct-current transmission line |
| 09/21/2011 | CN102193026A Device and method for processing input data of protective relay |
| 09/21/2011 | CN102193025A Method and apparatus for determining zero-crossing of an AC input voltage to a power supply |
| 09/21/2011 | CN102193024A Lightning stroke indicator |
| 09/21/2011 | CN102193023A Synchronization detecting circuit and automatic synchronous parallelization apparatus |
| 09/21/2011 | CN102193022A Current sensor |
| 09/21/2011 | CN102193021A 电流传感器 Current Sensors |
| 09/21/2011 | CN102193020A Current detector |
| 09/21/2011 | CN102193019A System and method for high precision current sensing |
| 09/21/2011 | CN102193018A System and method for sensing an amplifier load current |
| 09/21/2011 | CN102193017A Indirect test method for voltage drops on relay contacts |
| 09/21/2011 | CN102193016A Detecting method of self-adaptive frequency tracking current |
| 09/21/2011 | CN102192951A Ion concentration measuring circuit and ion current sensor |
| 09/21/2011 | CN101666834B Industrial frequency-harmonic interference resistant signal sampling method and system |
| 09/21/2011 | CN101099079B Current detection circuit, photoreceiver using the same, light emission control device, and electronic device using the same |
| 09/20/2011 | US8024157 Device for detecting voltage disturbance |
| 09/20/2011 | US8024077 Smart transformer |
| 09/20/2011 | US8022675 Detection of the supply state of a load supplied by a variable voltage |
| 09/15/2011 | WO2011111569A1 Power measurement system, voltage measurement device, current measurement device, and power measurement method |
| 09/15/2011 | WO2011111413A1 Electrical-current detecting apparatus |
| 09/15/2011 | WO2011109985A1 Battery capacity measuring method for mobile phone and apparatus thereof |
| 09/15/2011 | US20110224929 Monitoring system and input and output device thereof |
| 09/15/2011 | US20110221422 Method and measurement device for determining a condition of an electric igniter of a gas turbine burner and an ignition device for a gas turbine burner |
| 09/15/2011 | US20110221421 Method Of Sensing Magnitude Of Current Through Semiconductor Power Device |
| 09/15/2011 | DE102010015940A1 Kontaktlose Strommessvorrichtung und Verbraucherenergiemesssystem Contactless current measuring device and consumer energy measurement system |
| 09/14/2011 | EP2365351A2 Apparatus and method for monitoring cell voltage of battery pack |
| 09/14/2011 | EP2365350A2 Apparatus and method for synchronizing and measuring the current and voltage of a secondary battery pack |
| 09/14/2011 | EP2365346A2 Switching power supply |
| 09/14/2011 | EP2365345A2 System and method of sensing an amplifier load current |
| 09/14/2011 | EP2365344A1 Method for measuring surface property parameters of a material and system for analyzing surface property parameters of a material based on the method |
| 09/14/2011 | EP1654547B1 Method and circuit arrangement for monitoring the mode of operation of one or more load circuits, especially of a domestic appliance |
| 09/14/2011 | CN201976283U Ams照明控制设备 Ams lighting control equipment |
| 09/14/2011 | CN201976019U 一种非电池供电的智能遥控器 A non-battery-powered smart remote control |
| 09/14/2011 | CN201975770U 一种电力变压器接地电流监控限流装置 A power transformer ground current limiting device monitoring |
| 09/14/2011 | CN201975755U 用于监测电流互感器状态的电流诊断装置 Current diagnostic device for monitoring the state of the current transformer |
| 09/14/2011 | CN201975640U 智能报警插头 Intelligent Alarm plug |
| 09/14/2011 | CN201974718U 一种变电站设备驱潮加热器在线监测模块 One kind of substation equipment tidal flooding heater line monitoring module |
| 09/14/2011 | CN201974513U 机械扫描式串联电池组电压检测装置 Mechanical scanning series battery voltage detection device |
| 09/14/2011 | CN201974489U 避雷器检测装置 Lightning detection device |
| 09/14/2011 | CN201974483U 小容量超级电容测试装置 Small-capacity super capacitor testing device |
| 09/14/2011 | CN201974481U 一种避雷器用监测器 An arrester with monitoring device |
| 09/14/2011 | CN201974470U 中频电参数测量仪器 IF electrical parameter measuring instrument |
| 09/14/2011 | CN201974467U 充电式验电器 Rechargeable electroscope |
| 09/14/2011 | CN201974466U 一种变电站侵入波电流采样装置 Substations invasion wave current sampling device |
| 09/14/2011 | CN201974465U 大功率直流固态功率控制器的高精度电流检测模块 High-power DC solid state power controller with high precision current sensing module |
| 09/14/2011 | CN201974464U 一种内置式避雷器电流无线通信测量系统 A built arresters current wireless communication measurement system |
| 09/14/2011 | CN201974463U 一种ao信号调理装置 One kind of signal conditioning means ao |
| 09/14/2011 | CN1949668B Retarding comparator circuit of single terminal input |
| 09/14/2011 | CN102187575A Low-voltage self-calibrated cmos peak detector |
| 09/14/2011 | CN102187236A Mutual capacitance measuring circuits and methods |
| 09/14/2011 | CN102187235A Method and apparatus for dynamic signal switching of a merging unit in an electrical power system |
| 09/14/2011 | CN102185360A High-voltage charged display locking device |
| 09/14/2011 | CN102185319A Resonance wave detecting and phase-locking method and device for active power filter |
| 09/14/2011 | CN102183948A Online monitoring module for moisture-removing heater of transformer substation equipment |
| 09/14/2011 | CN102183718A Method for testing light emitting diode crystal particle |
| 09/14/2011 | CN102183707A High-pressure grounding on-line monitoring warning device |
| 09/14/2011 | CN102183704A An antitheft sensor for a transformer |
| 09/14/2011 | CN102183694A Earth ground tester with remote control |
| 09/14/2011 | CN102183688A Standard method and device for detecting weak signal |
| 09/14/2011 | CN102183687A Three-phase power current sensor based on CAN (Controller Area Network) transmission of AC (Alternating Current) sampling |
| 09/14/2011 | CN102183686A 10kV cable electroscope |
| 09/14/2011 | CN102183685A Flexible wide area power grid phasor measurement method |
| 09/14/2011 | CN102183684A Arc discharge detecting circuit, light source driving apparatus and method of driving a light source using the same |