| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
|---|
| 01/26/1988 | US4721865 Analog signal level detector |
| 01/20/1988 | EP0253545A2 Signal measurement |
| 01/20/1988 | EP0253477A1 Arrangement for the detection of high voltages |
| 01/20/1988 | EP0253098A1 Measuring arrangement for the evaluation of a sequence of signals generated by corpuscular radiation |
| 01/19/1988 | US4720841 Developing a digital signal that is integrated measure of an analog voltage |
| 01/19/1988 | US4720671 Semiconductor device testing device |
| 01/13/1988 | EP0252609A2 Comparator having an offset voltage cancellation circuit |
| 01/13/1988 | EP0252222A1 Circuit for the voltage supply of an electric unit |
| 01/13/1988 | EP0157789B1 Improvements in or relating to rectifier circuits |
| 01/13/1988 | CN87105625A Automatic electrical load timingly peak-limiting controller |
| 01/12/1988 | US4719414 Current detection device having an extended frequency range of response |
| 01/12/1988 | US4719408 Apparatus for indicating proper compensation of an adjustable frequency compensation network |
| 01/07/1988 | EP0251532A2 A static monitoring system |
| 01/07/1988 | EP0251528A2 Digital peak-hold circuit |
| 01/07/1988 | EP0250479A1 Current metering apparatus. |
| 01/07/1988 | DE3718839A1 Circuit for supplying an electrical chip with voltage |
| 01/07/1988 | DE3621589A1 Circuit for supplying voltage to an electrical module |
| 01/06/1988 | CN87203783U Dangerous voltage distinguishable test pencil |
| 01/05/1988 | US4717997 Abnormal condition detective circuit for a switching regulator |
| 01/05/1988 | US4716759 Method of detecting cylinder pressure and cylinder pressure detection device in internal combustion engine |
| 12/31/1987 | CN87206341U 4.5 digits digital panel meter |
| 12/31/1987 | CN87200670U Double-probe test pencil with the function of determining power phase sequence |
| 12/31/1987 | CN87200177U Low voltage voltmeter for motor vehicles |
| 12/29/1987 | US4716580 Charge transfer analog comparator and devices using such a comparator |
| 12/29/1987 | US4716372 Circuit arrangement for monitoring the current supply of an electric consumer |
| 12/29/1987 | US4716323 Power voltage drop detecting circuit |
| 12/26/1987 | CN87203672U Pocket-size ac circuit measuring meter |
| 12/26/1987 | CN87200482U Double sampling a/d converter |
| 12/23/1987 | EP0250292A1 Interference current probe comprising a resonant loop |
| 12/23/1987 | DE3704565A1 Method and circuit for the automatic zero-point correction of clock-controlled measuring systems |
| 12/23/1987 | CN87104878A Technique for measuring bioelectricity of a group floating place |
| 12/23/1987 | CN86209880U Liquid crystal display test pen capable of distinquishing voltage of different levels |
| 12/22/1987 | US4714916 Voltage loss detector |
| 12/22/1987 | US4714877 Three-voltage level detector for indicating a high level, mid-level or low level voltage |
| 12/22/1987 | US4714866 Rate-of-change signal generator using sampling techniques |
| 12/22/1987 | US4714826 Apparatus and method for testing outputs of logic circuits by modulating optical sequals |
| 12/22/1987 | CA1230646A1 Clamp mechanism for power line mounted monitoring device |
| 12/16/1987 | CN86209795U Electric plug with on/off display |
| 12/15/1987 | US4713653 For warning that an exposed member carrying high voltage is live |
| 12/15/1987 | US4713608 Apparatus for providing cost efficient power measurement |
| 12/15/1987 | US4713607 Current sensing circuit |
| 12/15/1987 | US4713553 Fast power-fail detector for power supplies with energy hysteresis |
| 12/12/1987 | CN86210931U Multi-functional non-contact electricity tester |
| 12/12/1987 | CN86209793U Simulated electricity signal detector |
| 12/09/1987 | EP0248589A2 Temperature-compensated oscillator circuit |
| 12/08/1987 | US4712058 Active load network |
| 12/08/1987 | US4712057 Method of examining and testing an electric device such as an integrated or printed circuit |
| 12/08/1987 | US4712056 Signalling circuit |
| 12/05/1987 | CN86209694U Megohm/voltage meter |
| 12/05/1987 | CN86207238U Power socket with current and voltage indicator |
| 12/05/1987 | CN86206580U Pocket multi-purpose electric tester |
| 12/03/1987 | WO1987007388A1 Process for checking load resistor circuits |
| 12/03/1987 | DE3617936A1 Arrangement for digital voltage measurement |
| 12/02/1987 | EP0247994A2 Method and device for establishing the standstill of an electric motor |
| 12/02/1987 | EP0247544A1 A monitoring device for overhead power transmission system |
| 12/02/1987 | CN87202682U Warning device for testing electricity |
| 12/02/1987 | CN87200862U Indicator lamp for displaying electric source polarity |
| 12/01/1987 | US4710704 Connected to receive a reference voltage |
| 11/26/1987 | DE3616975A1 Verfahren zur ueberpruefung von lastwiederstandskreisen Process for Review of load again stood circuits |
| 11/25/1987 | EP0246433A1 Current attenuator useful in a very low leakage current measuring device |
| 11/25/1987 | CN87202551U Running state indicating socket of electric refrigerator |
| 11/24/1987 | US4709165 Voltage supply level detecting circuit |
| 11/24/1987 | US4709163 Current-discrimination arrangement |
| 11/17/1987 | US4707621 Multiplex control apparatus having middle value selection circuit |
| 11/11/1987 | EP0244980A2 Rate-of-change signal generator and method using sampling techniques |
| 11/11/1987 | EP0244537A2 Equivalent time pseudorandom sampling system |
| 11/11/1987 | CN86210870U Dc electroscope mounded in screw assemblage |
| 11/10/1987 | US4706289 Level indicating methods and means |
| 11/10/1987 | US4706157 Semiconductor intergrated circuit |
| 11/10/1987 | US4706154 Circuit arrangement for protecting a CRT and associated circuitry from damage due to arcing |
| 11/07/1987 | CN86207392U Multipurpose tester capable of extending the application range of a universal meter |
| 11/04/1987 | EP0244248A2 Electro-optic sampler |
| 11/04/1987 | EP0243835A1 Measuring arrangement in systems with digital subsystems for registering voltage, current and phase angle |
| 11/04/1987 | CN87202243U Safe universal meter |
| 11/04/1987 | CN87200381U Multifunction test pencil |
| 11/03/1987 | US4704546 Auctioneering circuit |
| 10/31/1987 | CN86210714U Seven-functional test pencil |
| 10/28/1987 | EP0242640A1 Circuit for monitoring electric voltages and/or currents |
| 10/27/1987 | US4702564 Electroconductive pattern and liquid crystal on substrate |
| 10/27/1987 | US4702563 Battery tester including textile substrate |
| 10/22/1987 | DE3705468A1 Circuit arrangement for detecting and measuring the output current of an isolating transformer (flyback converter) |
| 10/22/1987 | DE3631476A1 Device for determining the ion current density in electrolytic baths |
| 10/21/1987 | EP0241903A2 Ground fault detector for high-voltage DC power supplies |
| 10/21/1987 | EP0241835A2 Circuit for driving a multiple-element display |
| 10/20/1987 | US4701697 Arrangement for measuring potential differences |
| 10/20/1987 | US4701596 Device for supervising condition of electric consumers in a motor vehicle |
| 10/20/1987 | CA1228400A1 Electrostatic system analyzer |
| 10/15/1987 | DE3612234A1 Method and arrangement for data acquisition and data reduction in disturbance value detection systems |
| 10/15/1987 | DE3611683A1 Digital measurement method for displaying measurements on a display |
| 10/15/1987 | DE3611682A1 Measurement arrangement having an active filter |
| 10/14/1987 | EP0240830A2 Voltage comparator circuit |
| 10/14/1987 | EP0240783A1 Event counter for an overvoltage arrester |
| 10/14/1987 | CN87200463U Practical range-expanding dc voltage meter |
| 10/13/1987 | US4700131 In a three phase ac line |
| 10/13/1987 | US4700126 Vehicular lamp circuit tester |
| 10/13/1987 | CA1228116A1 Half wave demodulation circuit |
| 10/08/1987 | DE3611657A1 Method for detecting and storing measurements |
| 10/08/1987 | DE3610742A1 Supporting insulator |
| 10/07/1987 | CN86208729U Electric test pencil with music indication |
| 10/03/1987 | CN86206526U Test pencil with writing function |