| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 12/02/2009 | CN100565222C High-frequency high-voltage current measuring apparatus |
| 12/01/2009 | US7627443 Calibration apparatus and method for programmable response frequency selecting elements |
| 12/01/2009 | US7627442 Semiconductor device having a test-voltage generation circuit |
| 12/01/2009 | US7626792 Power supply control apparatus including highly-reliable overcurrent detecting circuit |
| 12/01/2009 | US7626376 Electric current detector having magnetic detector |
| 11/26/2009 | WO2009143284A2 Opto-isolator multi-voltage detection circuit |
| 11/26/2009 | WO2009142903A2 Rms detector with automatic gain control |
| 11/26/2009 | WO2009142709A2 System and method of controlling fluid to a fluid consuming battery |
| 11/26/2009 | WO2009112350A3 Device for detecting the output voltage of a battery |
| 11/26/2009 | US20090292488 Electrical distribution networks |
| 11/26/2009 | US20090289634 Distinguishing False Signals in Cable Locating |
| 11/26/2009 | DE19825029B4 Strommessende Schaltung zur Messung eines Stromflusses durch eine elektrische Last Current-measuring circuit for measuring a current flowing through an electric load |
| 11/26/2009 | CA2724875A1 Opto-isolator multi-voltage detection circuit |
| 11/25/2009 | EP2124068A1 Ac electric quantity measuring device |
| 11/25/2009 | EP2123122A1 Current source with indirect load current signal extraction |
| 11/25/2009 | EP2122517A1 Moment-based method and system for evaluation of the reliability of a metal layer in an integrated circuit |
| 11/25/2009 | CN201352709Y Garage door hardware protection circuit |
| 11/25/2009 | CN201352378Y Base station power facility anti-theft system |
| 11/25/2009 | CN201352235Y Three-phase multifunctional electric energy meter |
| 11/25/2009 | CN201352234Y Three-phase multifunctional electric energy meter |
| 11/25/2009 | CN201352232Y Device for detecting ground wire electrification signals of electric warming washing machine |
| 11/25/2009 | CN201352231Y Flashlight neon-electroscope |
| 11/25/2009 | CN201352230Y Device for discriminating live cables |
| 11/25/2009 | CN101589314A Electronic monitoring of the wiring loom of a motor vehicle for voltage peaks or voltage dips |
| 11/25/2009 | CN101588082A Charge-controlling semiconductor integrated circuit and charging apparatus |
| 11/25/2009 | CN101588058A Protection system for stable operation of numeric household consumer |
| 11/25/2009 | CN101587972A Double cell control method |
| 11/25/2009 | CN101587675A Method of collecting and measuring impulse current of field electron emission display modulation |
| 11/25/2009 | CN101587174A 磁传感器 The magnetic sensor |
| 11/25/2009 | CN101587170A Method for early warning dangerous state of lithium battery and portable electronic device thereof |
| 11/25/2009 | CN101587143A CT charge on-line detection device and detection method |
| 11/25/2009 | CN101587142A Alarming device for preventing fault rod climbing |
| 11/25/2009 | CN100562758C Oscillation detecting apparatus and test apparatus |
| 11/24/2009 | US7622962 Sense amplifier control signal generating circuit of semiconductor memory apparatus |
| 11/24/2009 | US7622907 Device, system and method for a sensing electrical circuit |
| 11/24/2009 | US7622830 Supply topology with power limiting feedback loop |
| 11/24/2009 | CA2448325C 14/42-volt automotive circuit tester |
| 11/19/2009 | WO2009138694A2 Line of propagation digitizing device |
| 11/19/2009 | WO2009137902A1 Individualized self-monitoring system for transformers in power measurement installations and method of self-monitoring and diagnosis of transformers in power measurement installations |
| 11/19/2009 | US20090287914 Automatically generating a configuration diagram based on task requirements |
| 11/19/2009 | US20090287436 Digital multimeter with automatic measurement selection function |
| 11/19/2009 | US20090287435 System-level esd detection circuit |
| 11/19/2009 | US20090287431 Test apparatus, test method and computer readable medium |
| 11/19/2009 | US20090287430 System and Method for Detecting Leak Current |
| 11/19/2009 | US20090284254 Magnetic sensor |
| 11/19/2009 | US20090284248 Method and apparatus for high current measurement |
| 11/19/2009 | US20090284246 Low dropout regulator testing system and device |
| 11/19/2009 | DE202009010319U1 Elektronisches Bauelement Electronic component |
| 11/18/2009 | CN201349129Y Power feeder protection device |
| 11/18/2009 | CN201348810Y Wire and cable terminal overheating monitoring device |
| 11/18/2009 | CN201348643Y 多路信号检测电路 Multiplex signal detecting circuit |
| 11/18/2009 | CN101584019A Magnetic monitoring of a Faraday cup for an ion implanter |
| 11/18/2009 | CN101582636A Voltage detecting circuit and switching power source apparatus |
| 11/18/2009 | CN101581764A Key press detecting circuit |
| 11/18/2009 | CN101581752A Power transmission line parameter online measurement method based on fault wave recording |
| 11/18/2009 | CN101581748A Zinc oxide arrester on-line monitoring system |
| 11/18/2009 | CN101581739A Device for indicating voltage measurement of railway switch and application method thereof |
| 11/18/2009 | CN101581738A Overvoltage sensor of overhead transmission line |
| 11/18/2009 | CN101581602A Ambient light detection device |
| 11/18/2009 | CN100561867C Power detection circuit for non-contact IC card or RFID tag |
| 11/18/2009 | CN100561238C Method and device for power frequency inference source live line measurement for mutual inductance line zero-sequence impedance parameter |
| 11/18/2009 | CN100561235C Two measuring ranges potentiometer |
| 11/17/2009 | US7620897 Network based system which provides a database of measurement solutions |
| 11/17/2009 | US7619223 Beam current measuring instrument and beam current measuring method using same |
| 11/12/2009 | US20090281745 Monitoring Plasma Induced Damage During Semiconductor Wafer Processes |
| 11/12/2009 | US20090281744 Testing devices |
| 11/12/2009 | US20090278557 Power source monitoring device, lens barrel, camera, and power source monitoring method |
| 11/12/2009 | US20090278526 Current detecting device |
| 11/12/2009 | US20090278524 Method and apparatus for multiple electrical circuit mapping |
| 11/12/2009 | US20090278037 Estimation of ion cyclotron resonance parameters in fourier transform mass spectrometry |
| 11/12/2009 | DE102008021350A1 Protection device for protecting electrical machine i.e. engine, against current overloading, has utilization device for generating control signal by utilizing comparison result in machine model computation |
| 11/12/2009 | DE102008001586A1 Verfahren zur Fehlerkorrektur bei einer Strommessung in einem mehrphasigen Stromnetz Method for error correction at a current measurement in a multiphase current network |
| 11/11/2009 | EP2117094A2 Monitoring switch and method for checking the switch |
| 11/11/2009 | EP2116856A2 Method for correcting errors in an electricity measurement in a multi-phase electricity network |
| 11/11/2009 | EP1283594B1 Motor controller |
| 11/11/2009 | CN201345548Y Dynamic reactive power compensation intelligent composite switch |
| 11/11/2009 | CN201345543Y Counting AC power supply lightning protection box |
| 11/11/2009 | CN201344971Y LED power and voltage monitor |
| 11/11/2009 | CN201344967Y Test device of high-current micro switch used for lifting automobile glass |
| 11/11/2009 | CN201344965Y High-voltage electric energy monitoring device |
| 11/11/2009 | CN201344961Y Remote wireless security monitoring device for distributed lightening arresters |
| 11/11/2009 | CN201344959Y Condition monitoring device for floating mold difference high-voltage capacitor |
| 11/11/2009 | CN201344951Y Power failure detection circuit |
| 11/11/2009 | CN201344950Y High-precision residual voltage measuring device |
| 11/11/2009 | CN201344949Y Portable feedthrough small current sensor with 750kV transformer field idling characteristic |
| 11/11/2009 | CN201344948Y Test instrument |
| 11/11/2009 | CN201344947Y Multifunctional rapid-monitoring electric power meter |
| 11/11/2009 | CN101577979A Wireless sensor network device of photovoltaic power station |
| 11/11/2009 | CN101577438A High-capacity back-up power maintaining method based on remote monitoring platform |
| 11/11/2009 | CN101577413A Hydraulic valve control circuit and method for checking the function of a hydraulic valve control circuit |
| 11/11/2009 | CN101576595A Online monitoring and electricity testing method of switch cabinet lightning arrester and device for realizing same |
| 11/11/2009 | CN101576589A Distributed super-capacitor monitoring system based on iCAN protocol |
| 11/11/2009 | CN101576584A Voltage measurement of high voltage batteries for hybrid and electric vehicles |
| 11/11/2009 | CN101576583A Method for testing voltage ratio of transformer with phase-shifting winding |
| 11/11/2009 | CN101576582A Method for estimating electrode current according to transformer primary side and secondary side ampere-voltage and parameters thereof |
| 11/11/2009 | CN101576581A Voltage detecting apparatus with voltage controlled oscillator and battery state control system |
| 11/11/2009 | CN101576580A Non-invasive unitized current on-line measurement method of electric equipment |
| 11/11/2009 | CN101576430A Leakage detection equipment |
| 11/11/2009 | CN101575793A Automatic weighing method of barrel washing machine |
| 11/11/2009 | CN100559191C DC detection method and device for high frequency electric source device |