Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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02/27/1996 | US5494496 Battery voltage tester for end of cell |
02/22/1996 | WO1996005565A1 Method of detecting signals by means of fuzzy-logic classification |
02/22/1996 | DE4429191A1 Algorithm for modelling status changes e.g. in electrical power transmission networks |
02/21/1996 | CN1117152A Decision circuit operable at a wide range of voltages |
02/20/1996 | US5493211 Current probe |
02/15/1996 | DE4428673A1 Magnetic proximity detector |
02/15/1996 | DE4428658A1 Verfahren zur Erkennung von Signalen mittels Fuzzy-Klassifikation Method for detecting signals by means of fuzzy classification |
02/15/1996 | DE19528501A1 Current sensor with signal compensation for polarity inversion |
02/14/1996 | EP0696741A2 Bipolar cascadable circuit for signal limiting and field strength detection |
02/14/1996 | EP0696738A1 Apparatus for digitizing AC signals of unknown or changing frequency |
02/13/1996 | US5491434 Circuit and method of differential amplitude detection |
02/10/1996 | CA2155616A1 Apparatus for digitizing ac signals of unknown or changing frequency |
02/08/1996 | WO1996003826A1 Data signal zero crossing detection process |
02/08/1996 | DE4431397C1 Output current and voltage detection system for pulsed current regulator |
02/08/1996 | DE19524931A1 Device for measuring, storing and evaluating control signals of control and signalling appts. |
02/08/1996 | DE19504271C1 Impedance measuring system for AS network |
02/07/1996 | EP0695944A1 Single-pole voltage tester, especially for electrical overhead line |
02/07/1996 | CN2219498Y Portable high-voltage AC electroscope |
02/07/1996 | CN1116464A Method and apparatus for detecting an input signal level |
02/07/1996 | CN1116309A Current measurement circuit comprising a mutally couples transformer and an integration circuit |
02/07/1996 | CN1116308A Power transmission line hot-line measuring method and device |
02/06/1996 | US5489874 Inverting amplifier having negative-resistance circuit |
02/06/1996 | US5489872 Transconductance-capacitor filter circuit with current sensor circuit |
02/06/1996 | CA2155463A1 Single-pole voltage detector, namely for overhead electric line |
02/01/1996 | DE4426712A1 Verfahren zum Erfassen der Nulldurchgänge eines Datensignals A method of detecting the zero crossings of a data signal |
02/01/1996 | DE4423763C1 Verfahren zum digitalen Bestimmen des Effektivwertes eines periodischen elektrischen Meßsignals A method for determining the digital rms value of a periodic electrical measurement signal |
01/30/1996 | US5488324 Detection circuit for detecting a state of a control system with improved accuracy |
01/30/1996 | US5488304 Method and apparatus for judging active/dead status of communication cable |
01/24/1996 | EP0693691A2 Battery charge indicators |
01/24/1996 | CN1115489A Current signal correction process and device |
01/24/1996 | CN1030800C Method and electrical measuring apparatus for analyzing impedance of source of actual alternating voltage |
01/23/1996 | US5486756 DC current sensor |
01/17/1996 | EP0692876A2 Power-out reset system |
01/17/1996 | CN2217806Y Hand-touch type test pencil |
01/16/1996 | US5485078 Method for analyzing a circuit board waveform for faults |
01/11/1996 | WO1996000906A1 Digital process for determining the effective value of a periodic electric measurement signal |
01/10/1996 | EP0691545A1 Process and appliance in digital systems for measuring alternating voltage, current and phase angle of a signal |
01/10/1996 | EP0691543A1 Device for testing and/or measuring electric variables |
01/10/1996 | CN1114749A Electric current sensor |
01/09/1996 | US5483232 Method and apparatus for predicting peak voltage of a cable conveyed tool |
01/09/1996 | US5483153 Transient event detector for use in nonintrusive load monitoring systems |
01/03/1996 | CN2216681Y Voltage indicator for battery of vehicle |
01/02/1996 | US5481468 Method and apparatus for storing an increasing number of sequential real-time samples in a fixed amount of memory |
01/02/1996 | US5481211 Automatic polarity switching output circuit |
01/02/1996 | US5481182 Up/down spectrum scaling of signals |
12/27/1995 | EP0689063A2 Electron detector with high back-scattered electron acceptance for particle beam apparatus |
12/27/1995 | EP0689058A2 Circuit for monitoring a switching point regarding a leaking resistance |
12/27/1995 | EP0689057A2 Monitoring device secured to power distribution system conductors |
12/27/1995 | EP0688434A1 Power meter |
12/27/1995 | EP0688433A1 Improved power meter |
12/26/1995 | US5479120 High speed sampler and demultiplexer |
12/26/1995 | US5479119 High speed active overvoltage detection and protection for overvoltage sensitive circuits |
12/26/1995 | US5479103 For measuring the value of an unknown voltage |
12/19/1995 | US5477171 Full wave rectifier using current mirror bridge |
12/19/1995 | US5477135 Current probe |
12/13/1995 | EP0686850A1 DC current measuring circuit with voltage isolation between current path and measuring circuit |
12/13/1995 | CN2215119Y Signal-driven digital current meter |
12/12/1995 | US5475371 For detecting the presence of faults on an electrical conductor |
12/12/1995 | US5475301 DC current sensor using a continuous annularly shaped detection core |
12/07/1995 | DE4419200A1 Testprobe for monitoring condition of 3 pole lighting circuit |
12/07/1995 | DE19517373A1 Voltage generating circuit for testing large scale integrated circuit |
12/06/1995 | EP0685743A1 Current measurement circuit comprising a mutually coupled transformer and an integration circuit |
12/06/1995 | CN1030478C Low impedance, high voltage protection circuit |
12/05/1995 | US5473529 Circuit arrangement for rectifying an AC voltage signal with a plurality of differential amplifier stages |
12/05/1995 | US5473241 Method and apparatus for RMS measurements in induction motor without sampling |
11/30/1995 | DE4432963C1 Detection of current distribution in conductor of electric machine |
11/29/1995 | EP0683856A1 Device and method for digitally measuring a voltage varying within a given range, and uses thereof. |
11/29/1995 | CN1112676A Continuous detection apparatus for thermoelectric potential homogeneity of thermocouple wire material and its detection method |
11/28/1995 | US5471396 Estimator of amplitude and frequency of a noisy-biased sinusoid from short bursts of samples |
11/28/1995 | US5471169 Circuit for sinking current with near-ground voltage compliance |
11/28/1995 | US5471162 High speed transient sampler |
11/28/1995 | US5471161 Circuit for calculating the minimum value |
11/28/1995 | US5471134 Measuring apparatus with adjustable indicator for measuring the real load factor on an electricity source |
11/28/1995 | US5470417 Method of making multi-layer female component for refastenable fastening device |
11/22/1995 | EP0683567A1 Precision analog-to-digital converter with low-resolution and high-resolution conversion paths |
11/21/1995 | US5469365 Power monitor unit |
11/21/1995 | US5469090 Transistor circuit for holding peak/bottom level of signal |
11/21/1995 | US5469063 Method and apparatus for testing for a high voltage on the chassis of an electronic apparatus |
11/21/1995 | US5468966 System for tomographic determination of the power distribution in electron beams |
11/15/1995 | EP0682258A1 Obstruction detection circuit for sample probe |
11/15/1995 | CN1111753A DC current sensor |
11/14/1995 | US5467286 Metering unit with downloadable firmware |
11/14/1995 | US5467141 Modulator circuit for use with a plurality of operating standards |
11/14/1995 | US5467030 Circuit for calculating a maximum value |
11/14/1995 | US5466940 Electron detector with high backscattered electron acceptance for particle beam apparatus |
11/10/1995 | CA2138857A1 Obstruction detection circuit for sample probe |
11/09/1995 | WO1995030277A1 Reverse current prevention circuits |
11/08/1995 | CN2212209Y Circuit fault detector of motor vehicle |
11/08/1995 | CN2212207Y Improved two-channel voltage monitor |
11/07/1995 | US5465044 Analog multiplying-averaging circuit and wattmeter circuit using the circuit |
11/07/1995 | US5465043 Non-contact type probe and non-contact type voltage measuring apparatus, wherein the probe's irradiation surface is coated with a conductive film having a pinhole |
11/02/1995 | WO1995029553A1 Self-powered powerline sensor |
11/02/1995 | WO1995029525A1 A window discriminator controlled current breaker |
11/02/1995 | WO1995029407A1 Device for displaying the voltage of a conductor of a high-voltage power supply system |
11/02/1995 | WO1995029405A1 Device for connecting a voltage display apparatus to a sensor |
11/02/1995 | EP0679128A1 Junction box having integrally formed shunt |
11/02/1995 | DE19514806A1 Stromdetektor Current detector |
10/31/1995 | US5463379 Electrostatic discharge detector |
10/31/1995 | US5463350 Biasing circuit of an amplifier |
10/31/1995 | US5463345 Circuit for converting unipolar input to bipolar output |