| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 03/13/2001 | US6201479 Switching arrangement for monitoring leakage current |
| 03/13/2001 | US6201419 Peak detection circuit |
| 03/13/2001 | US6201385 Voltage and continuity tester |
| 03/13/2001 | US6201320 Automatic power turn-on circuit for a battery-powered voltage measurement apparatus |
| 03/13/2001 | US6201235 Electro-optic sampling oscilloscope |
| 03/06/2001 | US6198403 Power line meter/monitor with LED display |
| 03/06/2001 | US6198315 Current detection circuit |
| 03/01/2001 | WO2001014898A1 Measuring cell voltages of a fuel cell stack |
| 02/28/2001 | CN1285516A According to load current compensation type voltage sampling measurement circuit |
| 02/27/2001 | US6195617 Digital storage oscilloscope with simultaneous primary measurement and derived parameter display on common time axis and method therefor |
| 02/27/2001 | US6195429 Arrangement in a subscriber line interface circuit |
| 02/27/2001 | US6195274 Method for defining instantaneous value of current of pulse-controlled inductive load |
| 02/27/2001 | US6194877 Fault detection in a motor vehicle charging system |
| 02/27/2001 | US6194868 Voltage indicator for indicating that the voltage of a battery passes a given value |
| 02/22/2001 | WO2001013133A1 Method and apparatus for detecting a failed thyristor |
| 02/22/2001 | WO2001013131A1 Circuit and method for determining the offset error of a measurement of the coil current of an electromagnetic actuator that is subject to such an offset error |
| 02/22/2001 | CA2380172A1 Method and apparatus for detecting a failed thyristor |
| 02/21/2001 | EP1076829A1 Method and circuit for measuring a current |
| 02/21/2001 | EP1076828A2 Ac current sensor having high accuracy and large bandwidth |
| 02/21/2001 | CN1285133A Peak to peak signal detector for audio system |
| 02/21/2001 | CN1284775A Automatic pole exchanging circuit with current detecting feedback function |
| 02/21/2001 | CN1062354C Apparatus and method for measuring quasi-valve |
| 02/20/2001 | US6191623 Multi-input comparator |
| 02/20/2001 | US6191621 Peak detector |
| 02/20/2001 | US6191555 Capacity leveling circuit for a battery group |
| 02/14/2001 | CN2419698Y Multiple paired sockets |
| 02/14/2001 | CN2419603Y Voltage tester |
| 02/14/2001 | CN1283796A Circuit and method for detecting voltage state of power supply |
| 02/13/2001 | US6188966 Reconstruction of multi-phase signals from repetitive samples |
| 02/13/2001 | US6188321 Monitoring circuit for a supply voltage |
| 02/13/2001 | US6188250 Peak detection apparatus |
| 02/13/2001 | US6188226 Electric potential sensor |
| 02/08/2001 | WO2000072028B1 Voltage monitor circuit with adjustable hysteresis using a single comparator |
| 02/08/2001 | DE19934055A1 Verfahren zum Ermitteln von Amplitude und Phasenwinkel eines einem Strom oder einer Spannung eines elektrischen Energieversorgungsnetzes entsprechenden Meßsignals Method for determining amplitude and phase angle of a current or a voltage of an electrical power supply system corresponding measurement signal |
| 02/08/2001 | DE19931123A1 Electric potential measurement method e.g. for electrical installation in building or industrial plant |
| 02/07/2001 | EP1075071A2 Fault detection in a motor vehicle charging system |
| 02/07/2001 | EP1074848A1 Electrical current sensor |
| 02/07/2001 | EP1073984A1 Apparatus and method for improved dynamic range and response time in a logarithmic amplifier |
| 02/07/2001 | CN2418488Y Automatic monitoring device for stray current of subway |
| 02/07/2001 | CN1282875A Plasma body display screen over current detection device |
| 02/07/2001 | CN1282874A Current sensor |
| 02/06/2001 | US6185508 Power meter for determining parameters of multi-phase power lines |
| 02/06/2001 | US6184724 Voltage detection circuit |
| 02/06/2001 | US6184673 Active reset current sensor with measurement feedback |
| 02/06/2001 | CA2139575C High speed power analyzer |
| 01/31/2001 | EP1072894A2 Capacitive probe for in situ measurement of wafer DC bias voltage |
| 01/31/2001 | CN2417477Y Earthing test pencil |
| 01/31/2001 | CN2417476Y Test pencil with strong light sign |
| 01/31/2001 | CN1281988A Signal sampling method and signal detection display system |
| 01/30/2001 | US6181587 Analog signal detecting circuit, and AC side current detector of semiconductor power conversion device |
| 01/30/2001 | US6181267 Internally triggered equivalent-time sampling system for signals having a predetermined data rate |
| 01/26/2001 | CA2288288A1 Combination current sensor and relay |
| 01/25/2001 | WO2001006268A1 Electron density measurement and control system using plasma-induced changes in the frequency of a microwave oscillator |
| 01/25/2001 | WO2001006267A1 Method and apparatus for detecting slow and small changes of electrical signals including the sign of the changes, and circuit arrangement for the exact detection of the peak value of an alternating voltage |
| 01/25/2001 | WO2001006266A1 Ac current detection device |
| 01/25/2001 | WO2001006265A2 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 |
| 01/25/2001 | DE19935973A1 Electrical signal component amplitude and/or frequency measuring method e.g. for surveillance alarm system, uses elimination of detected maxima and minima points in sampled signal waveform caused by noise |
| 01/25/2001 | DE19930149A1 Verfahren zum Messen einer elektrischen Spannung und Anordnung zur Durchführung des Verfahrens A method for measuring an electrical voltage and arrangement for performing the method |
| 01/24/2001 | EP1070965A2 Method for measuring an electric voltage and arrangement for implementing the method |
| 01/24/2001 | EP0859961B1 Current sensor assemblies |
| 01/23/2001 | US6178362 Energy management system and method |
| 01/23/2001 | US6178105 Circuit arrangement for accurately detecting a direct current derived from clocked electric input values |
| 01/23/2001 | US6177875 Simple voltage window sensing circuit |
| 01/23/2001 | US6177815 High bandwidth mean absolute value signal detector with hysteresis and tunability |
| 01/23/2001 | US6177814 Semiconductor integrated circuit device |
| 01/23/2001 | US6177791 Current sensor according to the compensation principle |
| 01/18/2001 | DE19931725A1 Multi-function tool has a handle with a forward assembly in which sensors or tools can be fitted including sensors for measurement and testing purposes to reduce the amount of instruments needing to be carried |
| 01/17/2001 | EP1068541A1 Magnetic digital signal coupler |
| 01/17/2001 | CN2415527Y Three phase AC unbalance and phase interruption detecting apparatus |
| 01/17/2001 | CN2415365Y Electric power equipment theftproof alarm device |
| 01/11/2001 | WO2001003299A1 Improvements in and relating to triangle wave generators and power amplifiers |
| 01/11/2001 | WO2001002870A1 Method and apparatus for real time measurement of three phase electrical parameters |
| 01/11/2001 | DE19927063A1 Calibratable measurement system for determining electrical properties of high frequency stimulated gas discharges has single calibration before measurement to adapt probes to system |
| 01/10/2001 | EP1066536A1 Voltage indicator for indicating that the voltage of a battery passes a given value |
| 01/10/2001 | CN2414421Y Universal electricity test pencil |
| 01/10/2001 | CN2414420Y Broken line unfolding type voltage measuer |
| 01/10/2001 | CN1279400A DC power supply monitor |
| 01/09/2001 | US6173216 Protective relay with improved, sub-window cosine filter |
| 01/09/2001 | US6172536 Hysteresis comparator circuit |
| 01/09/2001 | US6172485 Power supply monitoring integrated circuit device and battery pack |
| 01/04/2001 | DE19930835A1 Signaling module for detecting and measuring source voltage or voltage state has electrochromic element whose degree of colouring varies with source voltage or voltage state |
| 01/02/2001 | US6169491 Multiport power monitor |
| 01/02/2001 | US6169428 Single supply voltage to frequency converter optimized for low voltage sensing above and below ground |
| 01/02/2001 | US6169426 Back bias voltage level detector |
| 01/02/2001 | US6169425 Voltage sensing current foldback switch circuit |
| 01/02/2001 | CA2076579C Fiber-optic sensor with first and second bimode fibers |
| 12/28/2000 | WO2000079310A1 Transient monitoring system and method |
| 12/28/2000 | WO2000079292A1 Method and device for measuring an electrical equipment discharge |
| 12/27/2000 | EP1062521A1 Simultaneous display of primary measurement values and derived parameters |
| 12/26/2000 | US6166771 Peak hold method and apparatus for detecting a peak value from a plurality of input sections |
| 12/26/2000 | US6166565 Circuit for comparing two electrical quantities |
| 12/26/2000 | US6166547 Line card loss of battery detector |
| 12/20/2000 | CN1277675A Device having processor means and having undervoltage detection means |
| 12/19/2000 | US6163204 Fast AC sensor for detecting power outages |
| 12/19/2000 | US6163190 Hysteresis comparator circuit consuming a small current |
| 12/19/2000 | US6163144 Electrical circuit tracing apparatus using modulated tracing signal |
| 12/19/2000 | US6163133 Process for determining the state of charge and the peak current loadability of batteries |
| 12/19/2000 | CA2086331C Faulted circuit detector having isolated indicator |
| 12/14/2000 | WO2000076047A1 Method and apparatus for deriving power system data from configurable source points |
| 12/13/2000 | EP1059536A1 Alternating current sensor |