Patents
Sitemap › G01 - Measuring; Testing › G01R - Measuring electric variables; Measuring magnetic variables › G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850)
12/1986
12/30/1986EP0206084A2 CMOS power-on detection circuit
12/30/1986EP0205773A1 Arrangement with at least one current transformer for the determination of the overloading of a current transformer possessing at least two windings
12/30/1986EP0205768A2 Measuring instrument housing
12/30/1986EP0086778B1 Battery voltage monitoring and indicating apparatus
12/23/1986US4631707 Memory circuit with power supply voltage detection means
12/23/1986US4630916 Circuit for detecting charged voltage of electronic flash
12/17/1986EP0205120A2 Superconducting current detecting circuit employing DC flux parametron circuit
12/16/1986US4630218 Current measuring apparatus
12/16/1986US4629976 Method and circuit for evaluating an analog voltage
12/16/1986US4629975 Coaxial probe for measuring the current density profile of intense electron beams
12/16/1986US4629889 Potential analyzer
12/10/1986CN86103901A Rms calculation circuit for digital circuit interrupters
12/10/1986CN85104522A Transcutaneous nerve stimulation device with sentinel
12/09/1986US4628303 Visual monitor for electrical signals
12/09/1986US4628277 Femtoammeter
12/09/1986US4628254 Method for digitally measuring waveforms
12/09/1986CA1215179A1 Versatile input circuit for sensing the status of a voltage input over a wide range of voltage levels and waveforms
12/04/1986WO1986007218A1 Method and apparatus for editing particle produced electrical pulses
12/04/1986WO1986007161A1 Voltage calibration in e-beam probe using optical flooding
12/02/1986US4626777 D.C. current transformer circuits
12/02/1986US4626707 Signal selection circuit
12/02/1986CA1214825A1 Current sensor for ac/dc converter
11/1986
11/26/1986CN86103646A Method and apparatus for editing particle produced electrical pulses
11/25/1986US4625283 Method and apparatus for digitally measuring alternating current
11/19/1986CN85104002A Utility method for full functional measurement of true value of alternating electric parameter
11/18/1986US4623838 Analog-digital conversion circuit apparatus connectable to a microcomputer for measuring electric voltage and current of a vibrator of an ultrasonic wave oscillator
11/18/1986CA1214229A1 Circuit arrangement for converting an input voltage into a proportional output signal
11/12/1986CN86201143U Acoustic alarm screwdriver with voltage tester
11/12/1986CN86103043A Scanning apparatus for measureing current density distribution of micro area corrosive potential
11/11/1986US4622519 For consolidating information signals
11/06/1986WO1986006528A1 Gas monitor
11/06/1986WO1986006496A1 Ac-dc transfer standard temperature sensor reversal error compensation circuit
11/05/1986CN85205006U A.c. induction test electrical equipment
11/05/1986CN85103875A Level indicator
11/05/1986CN85103529A Voltage-frequency conversion circuit
11/04/1986US4621206 Voltage level detecting circuit
10/1986
10/28/1986US4620148 Current meter
10/28/1986US4619740 Method of measuring current density in electroplating baths
10/28/1986CA1213322A1 Power-off detection circuit for an electronic apparatus
10/23/1986WO1986006191A1 Electrical warning system for malfunctions in refrigeration
10/23/1986WO1986006173A1 Battery tester and method for making the tester
10/22/1986CN85203769U Electronic voltage-detecting unit
10/21/1986US4618780 Power-off detection circuit for an electronic apparatus
10/21/1986CA1212998A1 Line voltage monitor system
10/15/1986EP0197825A1 Real-time analysis circuit of the pulse energy distribution of a pulsed signal
10/15/1986EP0197197A1 Device for controlling electrical consumers in motor vehicles
10/15/1986CN85107511A Non-contact method to obtain the voltage phase signal
10/14/1986US4617562 Multicolored liquid crystal display
10/14/1986US4617549 Monolithically integrable MOS-comparator circuit
10/14/1986US4617512 Capacitance measuring device including an overrange circuit
10/07/1986US4616174 Detector circuit for current measurements
09/1986
09/30/1986US4614940 Micropower DC voltage indicator
09/30/1986CA1212148A1 Optical voltage and electric field sensor
09/25/1986WO1986005594A1 Circuit for obtaining an average value
09/23/1986US4613873 Printer with supply voltage control circuit
09/23/1986US4613813 Electrostatic system analyzer
09/23/1986US4613769 Direct current coupled peak to peak detector circuit
09/23/1986CA1211792A1 Voltage loss sensor and alarm
09/17/1986EP0194755A1 Method and apparatus for detection of AC power failure conditions
09/17/1986CN85108028A Circuit of checking abnormality for inverted amplifier
09/17/1986CN85102705A Voltage-frequency converter
09/16/1986US4612657 Device for detecting momentary cutoff of AC power source
09/16/1986US4612500 Temperature stabilized Faraday rotator current sensor by thermal mechanical means
09/16/1986US4612499 Test input demultiplexing circuit
09/12/1986WO1986005277A1 Method and circuit for detecting a fault condition
09/10/1986CN86100363A Method circuit and apparatus for the elimination of the d.c.voltage components of a capacitive a.c.voltage divider
09/09/1986US4611207 Apparatus for monitoring voltage on a high voltage overhead transmission line
09/09/1986US4611126 Power on/off reset generator
09/09/1986CA1211166A1 Offset reduction for fast comparators employing series-connected, single-ended gain stages
09/03/1986EP0193040A1 Method and arrangement for analysing electric signals
09/03/1986CN86200505U Multipurpose electrometer
09/03/1986CN85109355A Detector for detecting danger of advanced explosion in electric dynamite
09/02/1986US4609983 Apparatus for determining active and/or reactive current and/or the power thereof in an inverter with a given input d-c voltage, especially in a pulsed inverter
09/02/1986US4609914 Voltage monitor and alarm for power line
08/1986
08/27/1986EP0192500A1 Digital volt meter using a double ramp converter
08/26/1986US4608532 Multi-probe metering apparatus
08/19/1986US4607174 Voltage detection circuit using threshold as reference voltage for detecting input voltage
08/13/1986EP0190645A2 Auxiliary displaying device for a digital meter
08/13/1986EP0190471A1 Level detector
08/13/1986EP0190455A1 Method, circuit and device for eliminating the DC-voltage component of a capacitive AC-voltage divider
08/12/1986US4605895 Domestic electrical tester
08/12/1986US4605868 Peak-to-peak detection apparatus
08/12/1986US4605867 Peak detector
08/05/1986US4604613 Status-indicating current interrupter
07/1986
07/31/1986WO1986004425A1 Digital voltmeter for measuring the effective value of alternating voltage
07/31/1986WO1986004424A1 Arrangement for the contact-less testing of the presence of an electrical voltage
07/29/1986US4603299 Constant duty cycle peak detector
07/29/1986US4603294 Measuring device for the accurate adjustment of the start-of-measurement of a measuring transducer
07/29/1986US4603293 Measurement of electrical signals with subpicosecond resolution
07/23/1986EP0188058A1 Directional circuit finder
07/22/1986US4602216 Current monitoring apparatus
07/22/1986US4602167 Voltage comparator circuit
07/22/1986CA1208290A1 Magneto-optical converter
07/16/1986CN85202961U Screw-driver with voltage tester beingable to test conductor separating insulating barrier
07/15/1986CA1207836A1 Spark monitor device for current collectors
07/09/1986EP0186951A2 Device orientation test method suitable for automatic test equipment
07/09/1986EP0186740A1 Power frequency detection system
07/09/1986CN86100156A Einrichtung zur kontrolle von elektrischen verbrauchern in kraftfahrzeugen
07/08/1986US4599557 Logic probe
07/08/1986US4599554 Vertical MOSFET with current monitor utilizing common drain current mirror
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