| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 05/19/2004 | CN2617002Y Improved wedged indicating lamp |
| 05/19/2004 | CN2616913Y Power frequency mutual inductance type ground resistance measuring instrument |
| 05/19/2004 | CN1497068A Electrochemical covering layer removal controlled by single-loop |
| 05/18/2004 | US6737856 Circuit configuration for detecting the current in a load transistor |
| 05/18/2004 | US6737853 Photoconductive-sampling voltage measurement |
| 05/18/2004 | US6737850 Power supply voltage detection circuit and power supply voltage detection method |
| 05/12/2004 | EP1323204B1 Method for operating a fuel cell and a fuel cell arrangement |
| 05/12/2004 | CN1149901C Peak to peak signal detector for audio system |
| 05/12/2004 | CN1149400C Method and apparatus for measuring mean square value of electrical signal |
| 05/12/2004 | CN1149172C Automatic monitoring system and method of high voltage signals |
| 05/11/2004 | US6735537 Procedure for measuring the current in each phase of a three-phase device via single current sensor |
| 05/11/2004 | US6734698 Radio frequency oscillation detector |
| 05/11/2004 | US6734662 Microprocessor controlled fault indicator having led fault indication circuit with battery conservation mode |
| 05/06/2004 | US20040085696 Surge counter/detector apparatus, system and method |
| 05/06/2004 | US20040085096 Efficient digital method of and system for determining the instantaneous phase and amplitude of a vibratory accelerometer and other sensors |
| 05/06/2004 | US20040085085 Method and apparatus for on-die voltage fluctuation detection |
| 05/06/2004 | DE4341425B4 Verfahren zum Bestimmen des durch eine Last in einem Kfz fließenden Stroms A method for determining the current flowing through a load current in a motor vehicle |
| 05/06/2004 | DE10248680A1 Current detection for several current sources involves simultaneously passing current signals via resistance arrangement(s) for comparison with criterion, isolating sources in event of excessive deviation |
| 05/05/2004 | CN1493879A Weighted door integrated group weak signal related detection circuit and application |
| 05/04/2004 | US6731218 Voltage sensing hand tool |
| 05/04/2004 | US6731161 Method for measuring the frequency response of a transimpedance amplifier packaged with an integrated limiter |
| 05/04/2004 | US6731103 Peak detector circuit |
| 05/04/2004 | CA2126525C Signal processing circuit including a variable gain input stage |
| 04/29/2004 | US20040080887 Current direction detection |
| 04/29/2004 | US20040080442 Interleaving A/D conversion type waveform digitizer module and a test apparatus |
| 04/29/2004 | US20040080308 Electric current detector with hall effect sensor |
| 04/29/2004 | DE10316117B3 Device for measuring local current/heat distribution on electrochemical electrode has current flow direction to resistance element transverse to current flow direction to current conducting element |
| 04/28/2004 | CN2613765Y Live line detector for insulator of high-voltage transmission line |
| 04/28/2004 | CN2613764Y Voltage sensor for measuring bus voltage of closed composite electric appliances |
| 04/28/2004 | CN1492234A Multiphase digital synchronously sampling photoelectric current mutual inductor |
| 04/28/2004 | CN1147733C Measuring system and method for industrial frequency current in opened magnetic path |
| 04/27/2004 | US6727682 Apparatus and method for remote current sensing |
| 04/27/2004 | US6727663 Circuit arrangement for feeding a load |
| 04/22/2004 | WO2004034440A2 Current integrating sense amplifier for memory modules in rfid |
| 04/22/2004 | WO2004021021A3 Method and circuit arrangement for current measurement |
| 04/22/2004 | WO2004019477A3 Input filter for a.c. motor phase current sensing |
| 04/22/2004 | WO2002095430A3 Test circuit |
| 04/22/2004 | US20040075449 Capacitive test point voltage and phasing detector |
| 04/21/2004 | CN1491360A Current sensor and overload current protective device comprising the same |
| 04/21/2004 | CN1490628A Superconductor high-temperature strip critical current measurnig method and apparatus |
| 04/20/2004 | US6724194 Preventing voltage reversal conditions in solid polymer electrolyte cells; heating resistor and rectifier in series; sensing thermistor; detecting a low voltage in a fuel cell |
| 04/20/2004 | US6724179 Opto-electric device for measuring the root-mean-square value of an alternating current voltage |
| 04/15/2004 | WO2003103002A3 Ion implantation system having an energy probe |
| 04/15/2004 | DE10296381T5 Wellenform-Ditigalisierungsvorrichtung vom A/D-Verschachtelungsumwandlungstyp Ditigalisierungsvorrichtung waveform from the A / D-Verschachtelungsumwandlungstyp |
| 04/15/2004 | DE10239859B3 Vorrichtung und Verfahren zur Spannungsspitzen-Messung mit digitalem Speicher Apparatus and method for measuring peak voltage having a digital memory |
| 04/14/2004 | CN1489280A Current detecting device and motor drive device using same |
| 04/13/2004 | US6721151 Ground fault interrupter |
| 04/13/2004 | US6720900 Guess method and apparatus, sampling apparatus |
| 04/13/2004 | US6720758 Method and apparatus for monitoring an electrical current consuming device |
| 04/08/2004 | WO2004029637A1 Electrical panel safety monitor |
| 04/08/2004 | WO2003025593A3 High voltage transient damage assessment in high speed power systems |
| 04/08/2004 | US20040066209 Integrated semiconductor circuit configuration |
| 04/08/2004 | US20040066201 Arrangements to detect and respond to disturbances in electrical power systems |
| 04/08/2004 | DE10245551A1 Integrierte Halbleiterschaltungsanordnung Semiconductor integrated circuit device |
| 04/08/2004 | DE10234181B3 Adaptive Spannungsüberwachung Adaptive voltage monitoring |
| 04/08/2004 | CA2499943A1 Electrical panel safety monitor |
| 04/07/2004 | EP1406095A1 Electric current detector and motor driving device using the same |
| 04/07/2004 | EP1406094A1 Current sensor with orthogonal magnetisation |
| 04/07/2004 | EP1405935A2 Control loop for use in electrochemical stripping |
| 04/07/2004 | EP1404207A1 Method for checking electrical safety of a household appliance and corresponding household appliance |
| 04/07/2004 | CN2610339Y 试电笔 Test pencil |
| 04/07/2004 | CN2610338Y Electrical equipment tester suitable for remote control and hand control used |
| 04/07/2004 | CN1145035C Cross digital peak value detector |
| 04/07/2004 | CN1145034C System for digital measurement of breakdown voltage of high-voltage samples |
| 04/06/2004 | US6717293 Electrical safety device |
| 04/06/2004 | CA2106290C Method and apparatus providing half-cycle digitization of ac signals by an analog-to-digital converter |
| 04/01/2004 | WO2002067293A9 Microelectromechanical systems (mems) device including an analog or a digital |
| 04/01/2004 | US20040064272 Arrangements to detect and respond to disturbances in electrical power systems |
| 04/01/2004 | US20040061506 Method for evaluating a measuring signal and corresponding circuit arrangement |
| 04/01/2004 | US20040061505 Differentiating between board-insertion power-on and chassis power-on |
| 04/01/2004 | US20040061489 Switchable impedance circuit for current sensing an electricity meter |
| 04/01/2004 | US20040061486 System and method of detecting an improper cable connection in a system |
| 04/01/2004 | US20040060827 Electrometer for measuring a potential between coated part and reference electrode; comparing voltage output signal to set point voltage |
| 04/01/2004 | DE20319423U1 Automotive current and voltage measurement circuit, especially an ASIC circuit, has a number of signal inputs, each with its own chopper module, connected to a common amplifier module and signal processing circuits |
| 03/31/2004 | CN1144055C Method and circuit for measuring current |
| 03/31/2004 | CN1144054C Method and apparatus for optical detecting electric current using light signals that have different wavelengths |
| 03/30/2004 | US6714888 Apparatus for testing semiconductor integrated circuit |
| 03/30/2004 | US6714054 Area efficient waveform evaluation and DC offset cancellation circuits |
| 03/30/2004 | US6714033 Probe for direct wafer potential measurements |
| 03/30/2004 | US6714026 System and method for measuring the thickness or temperature of a circuit in a printed circuit board |
| 03/30/2004 | US6713999 Current sensor working in accordance with the compensation principle |
| 03/30/2004 | US6713997 Power metering module |
| 03/25/2004 | WO2004025817A1 Voltage detecting circuit and internal voltage generating circuit comprising it |
| 03/25/2004 | WO2004025310A1 Device and method for measuring the quality of electrical signals in a three-phase network |
| 03/25/2004 | WO2003067269A3 Peak-to-peak signal detector |
| 03/25/2004 | WO2003043086A3 Method for detecting currents in a semiconductor component with a multi-cell current sensor |
| 03/25/2004 | US20040059469 Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems |
| 03/25/2004 | US20040056665 Power monitoring unit, control method therefor, and exposure apparatus |
| 03/25/2004 | US20040056627 Input filter for A.C. motor phase current sensing |
| 03/25/2004 | DE19908635B4 Anordnung zum Erfassen des Stromes durch einen Meßwiderstand eines Laststromkreises Means for sensing the current through a sense resistor of a load circuit |
| 03/25/2004 | DE10242791A1 Determining mean current through electromagnetic final control element involves measuring current in measurement resistance during PWM switching signal on period and applying correction factor |
| 03/25/2004 | DE10240914A1 Circuit with power transistor e.g. for power supply, motor drive circuit, has two current sensors comprising measuring transistors and evaluation circuit for determining load current |
| 03/24/2004 | CN2607652Y Switch controller for sterilizing cabinet |
| 03/23/2004 | US6711509 Impulsive transient hardware simulation |
| 03/23/2004 | US6710629 Impedance comparison integrator circuit |
| 03/23/2004 | US6710309 Use of the temperature gradient to determine the source voltage |
| 03/18/2004 | WO2004023151A1 Passive indicator of voltage presence |
| 03/18/2004 | US20040051534 Battery pack voltage detection apparatus |
| 03/18/2004 | US20040051515 Current measurement technique and current measurement apparatus |
| 03/17/2004 | EP1397864A2 Processing web for data processing in a digital oscilloscope or similar instrument |