Patents for G01R 15 - Details of measuring arrangements of the types provided for in groups , or (13,411) |
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03/11/2003 | US6531862 High performance current sensor using low cost current transformer arrays |
03/06/2003 | WO2003019211A1 Tap switch for frequency response and partial discharge measurement |
03/06/2003 | US20030042884 Opto-electric device for measuring the root-mean-square value of an alternating current voltage |
03/06/2003 | CA2458568A1 Tap switch for frequency response and partial discharge measurement |
03/05/2003 | EP1015896B1 Current measuring element with a hall sensor |
03/05/2003 | CN2539185Y Wireless high-voltage elecroscope |
03/05/2003 | CN1400469A Anti-jumming measuring circuit |
03/05/2003 | CN1102738C Dc and ac three-purpose current comparator |
03/04/2003 | US6529013 Three-phase voltage sensor with active crosstalk cancellation |
03/04/2003 | US6528988 Technique for programming a programmable device while coupled to another component in a circuit |
03/04/2003 | US6528960 Cost effective measurement of high currents |
02/27/2003 | WO2003016925A1 Digital multimeter module for portable electronic device |
02/27/2003 | WO2003016924A2 Oscilloscope module for portable electronic device |
02/27/2003 | WO2003016816A2 Current sensor |
02/27/2003 | US20030038620 Electrical resistance for the measurement of preferably high frequency alternating currents |
02/27/2003 | US20030038016 Tap switch for frequency response and partial discharge measurement |
02/26/2003 | CN1399286A Capacitor with high heat stability for shielded wire |
02/25/2003 | US6525533 Current detection switch and apparatus therewith |
02/25/2003 | US6525524 High linearity, low offset interface for hall effect devices |
02/20/2003 | WO2002075249A3 Method and device for current measurement by means of fibre-optic in-line sagnac interferometer and phase modulator suitable for the above |
02/20/2003 | WO2002054091A8 Capacity coupled rf voltage probe |
02/20/2003 | US20030034769 DMM module for portable electronic device |
02/20/2003 | US20030034768 Method and device for compensating for interfering variables in an optical sensor |
02/20/2003 | US20030034767 Oscilloscope module for portable electronic device |
02/19/2003 | EP1284425A2 Procedure and device for interference compensation of an optical sensor |
02/19/2003 | CN1397963A Current measuring device and method using current mutual inductor with high transforming ratio |
02/18/2003 | US6522517 Method and apparatus for controlling the magnetization of current transformers and other magnetic bodies |
02/18/2003 | US6522256 Hybrid current and voltage sensing system |
02/13/2003 | WO2003012459A1 Magnetic field sensor using microelectromechanical system |
02/13/2003 | WO2002023237A3 Decreasing the effects of linear birefringence in a fiber-optic sensor by use of berry's topological phase |
02/13/2003 | US20030030962 Capacitor with high thermal stability for shielded electrical lines |
02/13/2003 | US20030030432 Arrangement for measuring the magnetic field strength |
02/13/2003 | US20030030428 Measurement of quantities of electric line |
02/12/2003 | EP1129359B1 Apparatus and method for remote current sensing |
02/12/2003 | CN1396459A Three-phase moulded measuring tool |
02/11/2003 | US6518814 High-voltage capacitor voltage divider circuit having a high-voltage silicon-on-insulation (SOI) capacitor |
02/11/2003 | US6518782 Active power monitoring using externally located current sensors |
02/11/2003 | US6518740 Alternating current meter with photoelectric digital counter structure |
02/11/2003 | CA2306665C Float current measuring probe and method |
02/06/2003 | US20030028338 Sampler and method of measuring a waveform of a current with jitters reduced |
02/06/2003 | US20030025489 Electro-optic high voltage sensor |
02/05/2003 | EP1281975A2 Sensing device for indirectly measuring currents |
02/05/2003 | EP1281974A2 Hall-effect current detector |
02/05/2003 | CN2534586Y Magneto-optical current sensor |
02/05/2003 | CN1101077C Split-path linear isolation circuit apparatus and method |
02/04/2003 | US6515484 Electrical test instrument having an improved operator interface |
02/04/2003 | US6515468 Current sensor and electric circuit using the same |
02/04/2003 | US6515467 Method and system for optically detecting an electric current by means of light signals having different wavelengths |
01/30/2003 | US20030020472 Magnetic field sensor using microelectromechanical system |
01/30/2003 | DE10034706C2 Elektrooptik-Meßfühler Electro-optic probe |
01/29/2003 | EP1280169A1 Measuring capacitor with high thermal stability for gas insulated high-voltage |
01/29/2003 | EP1208386B1 Sensor for current measurement and electricity meter |
01/28/2003 | US6512359 Current detector using magnetic-electric conversion element and electric connection box using the same |
01/28/2003 | US6512357 Polarimetric sensor for the optical detection of a magnetic field and polarimetric sensor for the optical detection of an electric current |
01/23/2003 | US20030017753 Battery clamp with integrated current sensor |
01/22/2003 | EP1277060A1 Current measurement device |
01/22/2003 | EP0960342B1 Current sensor with self-oscillating generator circuit |
01/22/2003 | CN2532491Y High-voltage on-line tester |
01/21/2003 | US6508138 Method of, and device for, checking cigarettes |
01/15/2003 | EP1274991A1 Current measuring apparatus for battery |
01/15/2003 | EP1175623A4 Insulator support current sensor |
01/15/2003 | CN2531398Y Electronic element parameter measuring fixing equipment |
01/09/2003 | WO2002046777A3 Current sensors |
01/09/2003 | US20030006839 Extended range power detector and amplifier and method |
01/09/2003 | US20030006753 High linearity, low offset interface for hall effect devices |
01/09/2003 | US20030006752 Hall-effect current detector |
01/09/2003 | US20030006751 Hall-effect current detector |
01/08/2003 | EP1273921A1 Hall-effect current detector |
01/08/2003 | EP1092158B1 Current detector and current measurement apparatus including such detector |
01/07/2003 | US6504382 Electrical system with a stress shield system for partial discharge on-line monitoring of the state of high-voltage insulation |
01/07/2003 | US6504356 Microelectro-mechanical high resolution current sensing apparatus |
01/07/2003 | US6504355 Device for measuring an electric current by Faraday effect |
01/07/2003 | CA2120805C Faulted circuit indicator |
01/02/2003 | US20030001559 Hall-effect current detector |
01/02/2003 | EP1271159A2 Hall-effect current detector |
01/01/2003 | CN2529261Y 10KV voltage sensor |
12/31/2002 | US6501285 RF current sensor |
12/31/2002 | US6501241 Current detector used in system of controlling motor for driving vehicle |
12/27/2002 | WO2002023301A9 Wide ratio autotransformer-type current ranging |
12/26/2002 | US20020196031 Parallel insulation fault detection system |
12/25/2002 | CN1387213A Test mutual inductor for protecting device against electric ground leakage and protecting device against electric ground leakage |
12/24/2002 | CA2141128C Method and apparatus for sensing an input current with a bridge circuit |
12/19/2002 | WO2002101397A1 Measuring devices |
12/19/2002 | WO2002075327A3 Handheld tester for starting/charging systems |
12/19/2002 | US20020191360 Current detector for surge arrester diagnostic and overvoltage assessment in high voltage substations |
12/19/2002 | US20020190831 Sensor for measuring a direct current and a measuring method |
12/19/2002 | US20020190705 Current transformer based high voltage measurement method |
12/19/2002 | US20020190703 Hall-effect current detector |
12/18/2002 | EP1267173A2 Hall-effect current detector |
12/18/2002 | EP1266231A2 Instrument transformer |
12/18/2002 | EP1097385B1 Capacitative voltage divider for measuring high voltage pulses with a millisecond pulse duration |
12/18/2002 | CN2526854Y 电压传感器 Voltage sensor |
12/18/2002 | CN2526853Y Main body of digital active power meter |
12/18/2002 | CN1386199A Sagnac interferometer type current sensor |
12/17/2002 | US6495999 Method and device for measuring a magnetic field with the aid of the faraday effect |
12/17/2002 | CA2271537C Fault indicator having remote light indication of fault detection |
12/12/2002 | WO2002056032A3 Device, ammeter and motor vehicle |
12/12/2002 | US20020186189 Method and apparatus for predicting DC offset potential in a liquid crystal display (LCD) device |
12/12/2002 | DE10111816A1 Elektronischer Spannungswandler Electronic voltage converter |
12/11/2002 | EP1265075A2 Floating analog signal transmission having a calibration function |