| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 02/25/1998 | CN1174325A Light measuring device and manufacture process thereof |
| 02/24/1998 | US5721689 System and method for phasor estimation and frequency tracking in digital protection systems |
| 02/19/1998 | WO1998007165A2 Magnetic current sensor |
| 02/19/1998 | WO1998007038A1 Circuit arrangement for capturing the charging current in a power semiconductor element with source-side charge |
| 02/19/1998 | CA2261312A1 Magnetic current sensor |
| 02/17/1998 | US5719494 Sensor assembly |
| 02/17/1998 | US5719489 Apparatus for determining load currents |
| 02/11/1998 | EP0823638A2 Optical current measurement |
| 02/11/1998 | CN2274349Y Multipurpose electrical penlike detector |
| 02/10/1998 | US5717349 Wideband digital peak detector |
| 02/10/1998 | US5717326 Current measuring apparatus for measuring current in a wire |
| 02/10/1998 | US5717325 Multiprocessing transient event detector for use in a nonintrusive electrical load monitoring system |
| 02/05/1998 | DE19629588A1 Transient recording method for fast electrical signals |
| 02/04/1998 | CN1172374A Circuit breakers |
| 02/04/1998 | CN1172260A Amplitude detecting device |
| 02/04/1998 | CN1172259A Voltage analyzer and determination method using the same |
| 02/03/1998 | US5714895 Mean value detecting apparatus and mean value detecting integrated circuit having an offset voltage adjusting circuit |
| 02/03/1998 | US5714894 Current comparator arrangement |
| 02/03/1998 | US5714877 Apparatus for detecting the amplitude and phase of an A.C. signal |
| 02/03/1998 | US5714876 In-service serial digital source signal-level and cable-length measurement |
| 01/28/1998 | EP0759175A4 Microcontroller with brown-out detection |
| 01/27/1998 | CA2063522C Voltage detector for producing output signal without transient error level |
| 01/21/1998 | EP0819945A1 Means for measuring the cut off duration of an electronic system |
| 01/21/1998 | EP0819328A1 A.c. power cut-off device |
| 01/20/1998 | US5710542 Method of measuring the A.C. current in a conductor in an A.C. power transmission network |
| 01/20/1998 | US5710495 Apparatus and method for measuring average motor current |
| 01/14/1998 | EP0818878A1 Current sense circuit |
| 01/14/1998 | CN2272584Y Voltage tester |
| 01/14/1998 | CN1170250A Rechargeable battery pack |
| 01/13/1998 | US5708625 Voltage level detector |
| 01/13/1998 | US5708420 Voltage detection circuit compensated in technology and temperature |
| 01/08/1998 | WO1998000918A1 Peak detector and use thereof |
| 01/07/1998 | EP0816796A1 Amplitude detecting device |
| 01/07/1998 | EP0740860A4 High speed overvoltage detection and protection circuit |
| 01/07/1998 | EP0716748B1 Digital process for finding a measured quantity from an electric signal |
| 01/07/1998 | EP0653070B1 High speed power analyzer |
| 01/06/1998 | US5706204 Apparatus for triggering alarms and waveform capture in an electric power system |
| 01/06/1998 | US5705989 Current status circuit for a variable frequency motor |
| 01/06/1998 | US5705914 Overvoltage detecting apparatus for combination battery |
| 01/02/1998 | DE19625703A1 Low loss measuring system for heating current flow through probe heater unit |
| 12/31/1997 | CN2271755Y Plug and socket able to identify positive and negative electrode of power source |
| 12/31/1997 | CN1169213A Method for measuring phase currents in inverter |
| 12/30/1997 | US5703575 Open sensor diagnostic system for temperature transmitter in a process control system |
| 12/30/1997 | US5703518 Absolute value circuit capable of providing full-wave rectification with less distortion |
| 12/30/1997 | US5703503 Winner-take-all circuit |
| 12/30/1997 | US5703491 Voltage detection apparatus |
| 12/30/1997 | US5703490 Circuit and method for measuring current in an H-bridge drive network |
| 12/30/1997 | US5703486 Battery remaining capacity measuring device |
| 12/30/1997 | US5703481 Apparatus for detecting digital carrier signals on telephone cables |
| 12/29/1997 | EP0814395A2 Overcurrent sensing circuit for power mos field effect transistor |
| 12/29/1997 | EP0814341A2 Circuit for establishing an output signal corresponding to the amplitude of an input signal |
| 12/29/1997 | EP0585354B1 Multilayer female component for refastenable fastening device |
| 12/23/1997 | US5701253 Isolated current shunt transducer |
| 12/23/1997 | CA2023173C Battery voltmeter |
| 12/18/1997 | DE19717913A1 Operation method for hysteresis comparators for data reading |
| 12/17/1997 | EP0813069A2 Device for determining the current flowing through an inductor |
| 12/17/1997 | EP0813067A2 Electronic measuring circuit, especially for measuring currents with an integrated measuring resistance |
| 12/17/1997 | EP0754303B1 Reliable voltage monitoring system |
| 12/17/1997 | EP0411106B1 Thermo-optical current sensor and thermo-optical current sensing systems |
| 12/17/1997 | CN2270975Y Two phase ac electroprobe |
| 12/17/1997 | CN1036751C Modulated dither signal |
| 12/16/1997 | US5698984 Adaptive digital filter for improved measurement accuracy in an electronic instrument |
| 12/16/1997 | CA2068155C Electric current measurement apparatus for a solid state motor controller |
| 12/16/1997 | CA2012691C Circuit arrangement for generating a control signal in dependence upon the occurrence of an extreme value of a sinusoidal oscillation and use ofsuch a circuit arrangement |
| 12/04/1997 | DE19722471A1 Wide bandwidth current and impedance meter |
| 12/04/1997 | DE19632248C1 Display device with signal sampling |
| 12/03/1997 | EP0810724A2 Acousto-electronic component operating with surface acoustic waves |
| 12/03/1997 | EP0810443A1 Voltage monitoring circuit in an integrated circuit device |
| 12/03/1997 | EP0809891A2 A logarithmic level detector and a radio receiver |
| 12/03/1997 | EP0809808A1 Method of determining an earth-fault current |
| 12/03/1997 | CN1166639A Clamp circuit for remotely sensed voltage |
| 12/02/1997 | US5694073 Temperature and supply-voltage sensing circuit |
| 11/27/1997 | WO1997043892A2 System and method for estimating a load to optimize a backup energy system response |
| 11/26/1997 | EP0809398A2 Cathode current detecting circuit |
| 11/26/1997 | EP0809370A1 Digital signal receiver circuit |
| 11/26/1997 | EP0809115A2 Voltage measuring instrument and voltage measuring method using the same |
| 11/25/1997 | US5691869 Low cost apparatus for detecting arcing faults and circuit breaker incorporating same |
| 11/25/1997 | US5691624 Method and apparatus for detecting a full-charge condition while charging a battery |
| 11/20/1997 | WO1997043609A1 An environmentally insensitive optical sensor with improved noise cancellation |
| 11/20/1997 | DE19628366C1 Voltage monitoring circuit for monitoring connection of battery to electronic equipment contg. microcontroller supplied from voltage supply via buffer capacitor |
| 11/13/1997 | WO1997042510A1 Current sensor, in particular for low currents |
| 11/12/1997 | EP0806678A2 Laser voltage probe methods and apparatus |
| 11/12/1997 | EP0806675A1 Electrooptical current sensor with an optical fibre |
| 11/12/1997 | EP0806674A2 Current compensated current sensor |
| 11/12/1997 | CN2267466Y Structure for alarming current overload |
| 11/12/1997 | CN2267465Y Multi-function electrician test pencil |
| 11/12/1997 | CN2267464Y Current sensing device used for current measuring sampling |
| 11/11/1997 | US5687018 Receiving system with signal transmitting systems for transmitting an input signal as a modulated beam with an adjusted beam intensity |
| 11/05/1997 | CN2266741Y Multifunction electronic test pencil |
| 11/04/1997 | US5684466 Electrical strike system control for subsurface boring equipment |
| 11/04/1997 | CA2100135C Dc current sensor |
| 10/30/1997 | WO1997040437A1 Method and apparatus for sensing current in power supplies |
| 10/29/1997 | EP0803959A2 Battery monitoring |
| 10/29/1997 | EP0803048A1 Method and device for electronic compensation of electrical disturbance signals and use thereof |
| 10/29/1997 | CN1163664A Voltage detecting circuit, power on/off resetting circuit and semiconductor device |
| 10/29/1997 | CN1163405A Multifunctional digital high voltage measurer |
| 10/28/1997 | US5682104 Electron beam tester and testing method using the same |
| 10/23/1997 | WO1997039313A1 Device for determining the phase component of a conductive medium in a duct |
| 10/23/1997 | WO1997032218A3 Circuit for detecting a level or a level variation of an input direct voltage |
| 10/23/1997 | DE19615140A1 Vorrichtung zur Bestimmung des Phasenanteils eines leitfähigen Mediums in einer Leitung Device for determining the phase portion of a conductive medium in a conduit |