| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 03/09/1993 | US5191956 Electronic method and circuit for analyzing analog signals |
| 03/03/1993 | EP0529523A1 Multiple-meter driving apparatus |
| 03/03/1993 | EP0529339A1 Fibre optic sensor |
| 03/02/1993 | CA1314075C Signal distinction circuit |
| 03/02/1993 | CA1314074C Instantaneous voltage drop detector for dc power source |
| 03/02/1993 | CA1314073C Current density measurement system |
| 02/24/1993 | EP0528658A1 Load current sampling technique |
| 02/24/1993 | CN2127499Y Electronic test pencil for automobile without wire |
| 02/24/1993 | CN1069342A Pliers type electric power meter |
| 02/23/1993 | US5189362 High frequency signal measurement circuits utilizing temperature-sensitive devices |
| 02/18/1993 | WO1993003544A1 Process for compensating for quasi-periodic disturbances of measurement signals |
| 02/16/1993 | US5187389 Noise resistant low voltage brownout detector with shut off option |
| 02/16/1993 | US5187387 Overcurrent detecting apparatus |
| 02/16/1993 | CA1313692C Method and automatic apparatus for measuring a constant level in a noisy signal |
| 02/10/1993 | CN2126919Y Ac.acoustooptic detecting instrument |
| 02/10/1993 | CN1068894A 数字式电压闪变测试仪 Digital voltage flicker tester |
| 02/09/1993 | US5185570 Telecommunications signal detector |
| 02/09/1993 | US5185569 Peak value detecting circuit |
| 02/04/1993 | WO1993002353A1 Battery with integral condition tester |
| 02/03/1993 | EP0526146A1 AC-DC decoupling circuit for audio signals and used in an integrated circuit |
| 02/03/1993 | EP0525428A1 Digital protective relay apparatus |
| 02/03/1993 | EP0525421A2 Circuit arrangement for converting a voltage drop tapped from a test object from a predetermined input voltage range to a desired output voltage range |
| 02/03/1993 | EP0348416B1 Zener diode detector circuit |
| 02/03/1993 | CN2126741Y Ch-2290 shape electrostatic voltage measuring device |
| 02/03/1993 | CN1068658A Electric mornitoring instrument for machine tool |
| 01/27/1993 | CN1068429A Digital meter |
| 01/26/1993 | US5182596 Device for measuring surface potentials at photosensitive body and electrostatic recording apparatus using said device |
| 01/26/1993 | CA1313224C Apparatus for recovering an alternating variable in a controlled semiconductor |
| 01/26/1993 | CA1313223C Electro-optic measurements of voltage waveforms on electrical conductors |
| 01/20/1993 | EP0523901A1 Battery with integral condition tester |
| 01/20/1993 | EP0523048A1 Fibre optic arrangement for measuring the strength of an electric current. |
| 01/19/1993 | US5181187 Low power voltage sensing circuit |
| 01/19/1993 | US5181155 Overcurrent trip circuit |
| 01/19/1993 | US5180983 Ignition plug for an internal combustion engine provided with an ionization current detector electrode |
| 01/19/1993 | US5180929 Voltage measuring circuit |
| 01/14/1993 | DE4119894A1 Two-pole voltage measuring device with two probes - has one probe mounted on separate holder and connected to measurement circuit housing e.g. via users body |
| 01/13/1993 | EP0522734A1 Circuit and method of signal differentiation |
| 01/12/1993 | CA1312653C Apparatus and method for reducing transient exponential noise in a sinusoidal signal |
| 01/12/1993 | CA1312652C Wide dynamic range current measuring apparatus |
| 01/07/1993 | WO1993000590A1 High speed differential comparator |
| 01/07/1993 | DE4122399A1 Digitally measuring alternating voltages and currents - registering deviations of frequency from nominal value and eliminating frequency dependent errors from effective values |
| 01/05/1993 | US5177483 Multilevel configurable logic analyzer |
| 01/05/1993 | US5177376 Zero temperature coefficient comparator circuit with hysteresis |
| 12/30/1992 | EP0520660A1 Zero crossing detection circuit |
| 12/30/1992 | EP0520432A2 Signal processing circuit and system for detection of absolute value |
| 12/30/1992 | CN2126427U Multifunctional torch-type test pencil |
| 12/23/1992 | WO1992022949A1 Power fail detection circuit |
| 12/23/1992 | EP0519805A1 Detection of the voltage between phases in an alternator-regulator |
| 12/23/1992 | EP0519804A1 Current sensor using a directional resonance magnetometer |
| 12/23/1992 | EP0519658A2 Overvoltage sensor with hysteresis |
| 12/23/1992 | CN2125832U Test pencil for motordriven vehicle |
| 12/23/1992 | CN2125829U Multitester bar with test pencil |
| 12/18/1992 | CA2069168A1 Zero crossing detection circuit |
| 12/17/1992 | DE4117505A1 Measuring output current of clocked half bridge circuit, e.g. for driving motor - adding sum of AC output current and semiconductor switch currents in one state to AC current is second state |
| 12/16/1992 | EP0518244A2 Electric current measurement apparatus for a solid state motor controller |
| 12/16/1992 | EP0518116A1 Method for measuring the peak-value of an alternating voltage |
| 12/16/1992 | CN2125146U High voltage shockproof sound alarm |
| 12/16/1992 | CN2125145U Safety voltage test pencil |
| 12/16/1992 | CN2125144U Resonant clamp type amperemeter |
| 12/16/1992 | CN1066968A Multi-layer female component for refastenable fastening device and method of making same |
| 12/15/1992 | US5171961 Monitoring weld voltage |
| 12/10/1992 | WO1992021984A1 Apparatus for measuring average value of impulsive signal |
| 12/09/1992 | EP0517549A2 Method and apparatus for measuring RMS values |
| 12/09/1992 | CN1066939A Multifunciton single phase ac motor |
| 12/08/1992 | US5170335 Precision rectifier system with differential input and differential output |
| 12/08/1992 | US5170309 Four-pole circuit breaker |
| 12/08/1992 | US5170129 Charge detecting circuit with variable capacitor and method for same |
| 12/08/1992 | US5170077 Voltage level detecting circuit |
| 12/08/1992 | US5170076 Threshold comparator immunized against noise |
| 12/08/1992 | CA1311262C Device for indicating the short-circuiting of a lightning arrester |
| 12/03/1992 | DE4124099C1 Instantaneous detection circuitry ascertaining zero crossover point of current converter - uses rectifying bridge on sec. side with voltage at load branch used as measure for actual value of current |
| 12/02/1992 | EP0516562A1 Device for measuring current with an optical fibre |
| 12/02/1992 | EP0516130A2 Circuit for measuring battery current |
| 12/02/1992 | EP0515712A1 Phase-current measuring circuit in multiphase network systems |
| 12/02/1992 | CN2123772U Electricity testing pen |
| 12/02/1992 | CN1066738A Open phase timer |
| 12/02/1992 | CN1019332B On-line overvoltage monitor for electric power system |
| 12/02/1992 | CN1019289B Controlling apparatus of elevator |
| 12/01/1992 | CA1311014C Circuit for measuring the voltage drop between the welding electrodes of a resistance welding machine |
| 11/26/1992 | WO1992021037A1 Multi-mode measuring system |
| 11/25/1992 | EP0514755A1 Peak detection circuit |
| 11/25/1992 | CN2123080U Machine tool electric monitor |
| 11/25/1992 | CN2123079U Induction electric tester |
| 11/24/1992 | US5166750 Fiber optic gyro |
| 11/24/1992 | US5166549 Zero-voltage crossing detector for soft-switching devices |
| 11/21/1992 | WO1992020250A1 Multilayer female component for refastenable fastening device and method of making the same |
| 11/19/1992 | EP0513955A2 Device for intermittently measuring a quantity over a long period of time |
| 11/19/1992 | DE4115761A1 Load current determining system esp. for scope of voltage regulator - has measurement resistance through which load current flows and voltage lying at terminals of measurement resistance is supplied to differential amplifier |
| 11/18/1992 | CN2122392U 电子验电器 Electronic electroscope |
| 11/17/1992 | US5165058 Analog-to-digital converter |
| 11/17/1992 | US5164864 Circuit for comparing high frequency amplitude modulated signals |
| 11/17/1992 | US5164667 Voltage detecting device |
| 11/17/1992 | US5164664 Method for the optical measurement of electrical potentials |
| 11/17/1992 | US5164660 True, power, RMS current, and RMS voltage measuring devices |
| 11/11/1992 | EP0512920A2 Detection circuit for detecting a state of a control system with improved accuracy |
| 11/11/1992 | EP0512711A2 Device for measuring the quantity of electricity stored in a battery |
| 11/11/1992 | CN2121692U No-touch test electricity device |
| 11/11/1992 | CN2121305U Multi-functional combined screwdriver |
| 11/11/1992 | CN1066127A Multi-function test pencil |
| 11/09/1992 | CA2042090A1 Indicator for block heater |