| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 02/05/2003 | CN1101077C Split-path linear isolation circuit apparatus and method |
| 02/04/2003 | US6516291 RMS-to-DC converter with fault detection and recovery |
| 02/04/2003 | US6515467 Method and system for optically detecting an electric current by means of light signals having different wavelengths |
| 01/30/2003 | US20030021129 Method and apparatus for low cost, current and voltage sense circuits with voltage drop |
| 01/30/2003 | US20030020592 Current detection resistor, mounting structure thereof and method of measuring effective inductance |
| 01/30/2003 | US20030020516 Voltage comparator circuit and substrate bias adjusting circuit using same |
| 01/30/2003 | US20030020515 Compact transmitter detection circuit with a wide dynamic range |
| 01/30/2003 | US20030020454 Method for determining a current density distribution in a fuel cell stack |
| 01/30/2003 | US20030020452 Unbalanced three phase delta power measurement apparatus and method |
| 01/30/2003 | US20030020430 AC current detecting device for inverter apparatus and AC current detecting method therefor |
| 01/29/2003 | EP1280264A2 AC current detecting device for inverter apparatus and AC current detecting method therefor |
| 01/29/2003 | CN2533472Y AC three-phase voltage monitor |
| 01/29/2003 | CN1394283A Electronic device |
| 01/28/2003 | US6512990 Distributed trigger node |
| 01/28/2003 | US6512398 Semiconductor integrated circuit device having reference voltage generating section |
| 01/28/2003 | US6512361 14/42-volt automotive circuit tester |
| 01/23/2003 | US20030018933 Power failure sensing device and a card reader having a power failure sensing device |
| 01/23/2003 | US20030018441 Impulsive transient detection and data acquisition coprocessor |
| 01/23/2003 | US20030016004 Apparatus for a simplified power disturbance indicator gage with learning capability options |
| 01/22/2003 | EP1278073A1 Device for measuring the electrical current flowing through at least an electrical conductor and method for error correction in such a device |
| 01/22/2003 | EP1278070A2 Method and apparatus for low cost current and voltage sensing in circuits as a function of a voltage drop |
| 01/22/2003 | EP1194785B1 Method for determining the amplitude and angle of phase of a measuring signal corresponding to the current or voltage of an electric power distribution system |
| 01/22/2003 | EP1092159B1 Layered current sensor |
| 01/22/2003 | EP0960342B1 Current sensor with self-oscillating generator circuit |
| 01/22/2003 | EP0732003B1 Fm demodulator with threshold extension and receiver comprising such an fm demodulator |
| 01/22/2003 | CN2532491Y High-voltage on-line tester |
| 01/22/2003 | CN1392668A Voltage comparing circuit |
| 01/22/2003 | CN1392417A Novel digital/analog double display AC electric meter |
| 01/22/2003 | CN1099597C On-line detection method for function of operational amplifier |
| 01/22/2003 | CN1099595C Two-dimensional sensor having photoconductive layer for measuring cell activity and measuring system for the same purpose |
| 01/21/2003 | US6509718 Battery pack diagnostic method and battery pack diagnostic apparatus |
| 01/16/2003 | WO2002097451A8 14/42-volt automotive circuit tester |
| 01/16/2003 | US20030012393 Digital quasi-RMS detector |
| 01/16/2003 | US20030011355 Current detector and current measuring apparatus including such detector with temperature compensation |
| 01/16/2003 | US20030011255 Current detection device |
| 01/15/2003 | EP1276223A1 Current detection device |
| 01/15/2003 | EP1275008A2 Circuit arrangement for measuring the current consumption of a transistor-controlled load |
| 01/15/2003 | EP1274991A1 Current measuring apparatus for battery |
| 01/15/2003 | EP1175623A4 Insulator support current sensor |
| 01/15/2003 | EP1024985B1 Circuit configuration to monitor a regulated output voltage in a motor vehicle |
| 01/15/2003 | CN2531399Y Ground electrode charged monitoring device of electric water heater |
| 01/15/2003 | CN1391317A Power wire regulator with voltage and current amplitude tracking |
| 01/14/2003 | US6507794 Energy meter with power quality monitoring systems and methods |
| 01/14/2003 | US6507227 Device and method for monitoring current delivered to a load |
| 01/14/2003 | US6507195 Electronic apparatus using removable batteries as drive source |
| 01/14/2003 | US6507184 Methods and apparatus for differential current measurement in a three-phase power system |
| 01/14/2003 | US6507175 System and method for detection of zero current condition |
| 01/09/2003 | WO2003003035A1 Accurate voltage measurement system using relay isolated circuits |
| 01/09/2003 | WO2003003028A1 Accurate battery current measurement system for a battery care unit |
| 01/09/2003 | WO2003001963A1 Method for checking electrical safety of a household appliance and corresponding household appliance |
| 01/09/2003 | WO2002046777A3 Current sensors |
| 01/09/2003 | US20030006805 Tunable circuit for detection of negative voltages |
| 01/09/2003 | US20030006786 Method and device for measuring intensity of electromagnetic field, method and device for measuring current-voltage distribution, and method for judging quality of electronic device, and electronic device therefor |
| 01/09/2003 | US20030006749 Current sensing and measurement in a pulse width modulated power amplifier |
| 01/08/2003 | EP1273922A1 Methods and devices for measuring electrical currents |
| 01/08/2003 | EP1092158B1 Current detector and current measurement apparatus including such detector |
| 01/08/2003 | CN2530271Y Cut-off waner of low voltage power line |
| 01/08/2003 | CN2530270Y 500 KV line electroscope engaged by magnetic force |
| 01/08/2003 | CN1389737A Method and apparatus for phase current of inverted amplifier control apparatus using single sensor |
| 01/08/2003 | CN1389736A AC signal measuring controller for power system |
| 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 | US20030002573 Testing method and apparatus of glitch noise and storage medium |
| 01/02/2003 | US20030001896 Measurement system graphical user interface for easily configuring measurement applications |
| 01/02/2003 | US20030001654 Area efficient waveform evaluation and DC offset cancellation circuits |
| 01/02/2003 | US20030001653 Area efficient waveform evaluation and DC offset cancellation circuits |
| 01/02/2003 | US20030001626 Detection of voltage amplitude using current |
| 01/02/2003 | US20030001593 System and method for measuring the thickness or temperature of a circuit in a printed circuit board |
| 01/02/2003 | US20030001580 Accurate battery current measurement system for a battery care unit |
| 01/01/2003 | CN2529262Y Alarm device for charging line cut-off |
| 01/01/2003 | CN1097855C Boot strap capacitance charging circuit |
| 12/31/2002 | US6501410 Signal analyzing apparatus |
| 12/31/2002 | US6501303 Semiconductor integrated circuit |
| 12/31/2002 | US6501241 Current detector used in system of controlling motor for driving vehicle |
| 12/31/2002 | US6499811 Integrated circuit having power supply voltage monitor |
| 12/26/2002 | US20020196054 Voltage comparing circuit |
| 12/26/2002 | US20020196011 Electronic device |
| 12/26/2002 | US20020196010 Method of determining a resistive current |
| 12/25/2002 | CN2528127Y Display device mounted on earth leakage protective plug or leakage breaker |
| 12/24/2002 | US6498519 Voltage control circuit network device and method of detecting voltage |
| 12/24/2002 | US6498517 Peak hold circuit |
| 12/24/2002 | US6498493 Electric potential detector, device tester and method of detecting electric potential |
| 12/24/2002 | US6498491 Battery monitoring system |
| 12/19/2002 | WO2002101397A1 Measuring devices |
| 12/19/2002 | US20020193968 Multifunction intelligent electronic device and method |
| 12/19/2002 | US20020193961 Impulsive transient hardware simulation |
| 12/19/2002 | US20020190831 Sensor for measuring a direct current and a measuring method |
| 12/19/2002 | DE10127054A1 Monitoring method for automobile control unit power supply incorporates testing of RESET line after restarting of control unit |
| 12/18/2002 | EP1267492A1 Voltage comparing circuit |
| 12/18/2002 | CN2526856Y Lightning arrestor impulse current recorder |
| 12/18/2002 | CN1386199A Sagnac interferometer type current sensor |
| 12/18/2002 | CN1385706A Multi-channel high-accuracy voltage and ringing current tester |
| 12/17/2002 | US6496378 Housing suitable for interconnection to a junction box and a duplex housing |
| 12/17/2002 | US6496024 Probe holder for testing of a test device |
| 12/17/2002 | CA2271537C Fault indicator having remote light indication of fault detection |
| 12/12/2002 | WO2002099444A1 Method for monitoring a power supply of a control unit in a motor vehicle |
| 12/12/2002 | WO2002056032A3 Device, ammeter and motor vehicle |
| 12/12/2002 | US20020186053 Detector circuit for detecting voltage spikes |
| 12/12/2002 | US20020186038 Circuit for the detection of short voltage glitches in a supply voltage |