| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 07/03/1979 | US4160176 Electronic watch |
| 07/03/1979 | US4160175 Differential threshold detector |
| 07/03/1979 | US4160171 Method and apparatus for determining the reference voltage in an impressed current corrosion protection system |
| 06/19/1979 | US4158809 Signal measuring and display control method and apparatus |
| 06/13/1979 | EP0002387A1 Electric power system fault warning arrangements |
| 06/12/1979 | CA1056464A1 Voltage memory device |
| 06/05/1979 | US4157510 Electronic instrument amplifier |
| 06/05/1979 | US4157507 Electronic system for detecting direction of motion |
| 06/05/1979 | US4157502 Arrangement for determining the effective value and/or the power of electrical signals |
| 06/05/1979 | US4157501 Digital panel meter |
| 06/05/1979 | US4157087 Peripheral nerve stimulator |
| 05/22/1979 | US4156280 Utility monitor for detecting and storing power line disturbances |
| 05/22/1979 | US4156276 Effective value converting circuit |
| 05/22/1979 | US4156185 Direct current measuring system for rectifiers |
| 05/22/1979 | US4156183 Method of and means for measuring the level of test signals over selected wide band frequency ranges |
| 05/22/1979 | US4156181 Ratio circuit |
| 05/22/1979 | CA1055104A1 Apparatus for measuring the beam current of charged particle beam |
| 05/15/1979 | US4155082 Electrical connectors including power failure warning means |
| 05/15/1979 | US4155038 Automatic comparison calibration device with ratio determination |
| 05/15/1979 | CA1054676A1 Comparator/bistable circuit |
| 05/08/1979 | US4153873 Transducer for converting a varying analog current signal to a binary digital signal |
| 05/08/1979 | CA1053924A1 Calibrating a measurement system including bridge circuit |
| 05/02/1979 | EP0001707A1 A thermally isolated monolithic semiconductor die and a process for producing such a die |
| 05/01/1979 | US4152716 Voltage dividing circuit in IC structure |
| 05/01/1979 | US4152656 Apparatus for monitoring an AC variable |
| 05/01/1979 | US4152643 Voltage indicating test point cap |
| 05/01/1979 | US4152639 Electrical circuit voltage and continuity testing device |
| 04/24/1979 | US4151464 Integrating voltage to frequency converter and memory decoder |
| 04/24/1979 | US4151374 Bus connection detector circuit for bus connection matrix circuit |
| 04/19/1979 | WO1979000194A1 Transducer for converting a varying analog current signal to a binary digital signal |
| 04/17/1979 | US4150435 Tape recorder with display function |
| 04/17/1979 | US4150339 Temperature insensitive DC voltage detection and protection circuit |
| 04/17/1979 | US4150332 Voltage detector with spring biased sensor |
| 04/17/1979 | US4150310 Track and hold circuit |
| 04/10/1979 | US4149160 Multi-input signal comparator and indicator circuit |
| 04/10/1979 | CA1052445A1 Single knob rotary control of meter damping and push control damping override |
| 04/03/1979 | US4147978 System for monitoring electrical energy consumption |
| 04/03/1979 | US4147943 Sensitive high speed clocked comparator |
| 03/20/1979 | US4145661 Precision measuring amplifier |
| 03/20/1979 | US4145651 Hand-held logic circuit probe |
| 03/20/1979 | US4144704 Safety device for battery-operated watches |
| 03/13/1979 | US4144492 Method for measuring a voltage with the aid of an analogue-digital converter |
| 03/07/1979 | EP0001003A2 Apparatus and method for operating a dynamo-eletric machine |
| 03/06/1979 | US4143365 Device for the acquisition and storage of an electrical signal |
| 03/06/1979 | US4143318 Wide range digital meter |
| 03/06/1979 | US4143317 Multiple range peak reading voltmeter |
| 03/06/1979 | US4143315 Rms transducer and voltage regulating system employing the same |
| 03/06/1979 | CA1050118A1 Peak detector |
| 02/27/1979 | US4142151 Failed diode indicator |
| 02/27/1979 | US4142149 Control meter usable as a potentiometric or photoelectric device |
| 02/27/1979 | US4142118 Integrated circuit with power supply voltage level detection |
| 02/27/1979 | US4142110 Circuit to eliminate DC bias |
| 02/27/1979 | US4141247 Optical warning indicator means on bimetal measuring element |
| 02/20/1979 | US4140930 Voltage detection circuit composed of at least two MOS transistors |
| 02/13/1979 | US4139820 A.C. and D.C. voltage polarity indicator utilizing electrochromic cells |
| 02/13/1979 | US4139816 Copy paper test apparatus |
| 02/13/1979 | US4139813 Adaptor for an electrometer probe to permit contact potential measurements and method for using same |
| 02/13/1979 | US4139788 Test circuit for indication of deviation of source voltages from their set points |
| 02/06/1979 | US4138641 Instrument amplifier and load driver having offset elimination and common mode rejection |
| 02/06/1979 | US4138640 Measuring arrangements for electrical currents |
| 01/30/1979 | US4137493 Battery charge detector and charging system including such detector |
| 01/23/1979 | CA1047112A1 Battery alarm |
| 01/23/1979 | CA1046943A1 Luminescent solid state status indicator |
| 01/16/1979 | US4135128 Apparatus for sensing the reactive or real components of current |
| 01/16/1979 | CA1046643A1 Moving time base mean value integrator |
| 01/16/1979 | CA1046584A1 Variable gain electronic current transformer |
| 01/16/1979 | CA1046583A1 Power outlet circuit tester with ground fault testing capability |
| 01/09/1979 | US4134060 Battery deterioration monitoring apparatus employing voltage comparison means for activation of a battery alarm |
| 01/09/1979 | US4134059 Method and apparatus for measuring the corrosion current of an immersed structure provided with a cathodic protection device |
| 01/09/1979 | CA1046143A1 Electronic circuit using field effect transistor with compensation means |
| 01/02/1979 | US4132947 Waveshape detector |
| 01/02/1979 | US4132909 Zero axis crossing detector |
| 01/02/1979 | US4132907 Full wave rectifier circuit |
| 12/26/1978 | US4131847 Device for measuring active and/or reactive component of AC current or AC power |
| 12/26/1978 | CA1045208A1 Anode adjustment |
| 12/12/1978 | US4129827 Amplitude probability detector |
| 11/28/1978 | US4127813 Method for balancing the sensitivity of two channels in a differential detection apparatus |
| 11/28/1978 | US4127811 Auto-calibrating voltmeter |
| 11/28/1978 | US4127810 Digital voltmeter |
| 11/28/1978 | US4127807 Hand-held circuit tester with lens arrangement for viewing indicator lamps housed within the tester |
| 11/28/1978 | US4127780 Periodic sampling concentration indicator |
| 11/21/1978 | US4126826 Measurement system signal isolation |
| 11/07/1978 | US4124821 Analog to frequency convertor |
| 10/31/1978 | CA1041627A1 Bi-level condition monitor using reverse-biased control diodes |
| 10/31/1978 | CA1041606A1 Electronic overload detecting device |
| 10/24/1978 | US4122389 Moisture sensor |
| 10/24/1978 | US4122388 Apparatus for testing the shaft/bearing insulation of a turbo-machine |
| 10/17/1978 | US4121153 Tapered resistor meter |
| 10/17/1978 | US4121152 Method and apparatus for tracing electrical cables |
| 10/17/1978 | US4121120 Clock driven voltage comparator employing master-slave configuration |
| 10/17/1978 | US4121119 Pulse peak detector |
| 10/17/1978 | US4121111 Apparatus for detection of synchronism by means of vector difference measurement |
| 10/17/1978 | CA1040705A1 Direct current measuring system for rectifiers |
| 10/10/1978 | US4119964 Systems and methods for determining radio frequency interference |
| 10/03/1978 | US4118667 Method for making a heat sensitive fault detecting and indicating device for watthour meter |
| 10/03/1978 | US4118664 Electrical trouble finding apparatus |
| 10/03/1978 | CA1039809A1 Digital apparatus for rapidly detecting the growth of and identifying micro-biological organisms |
| 09/26/1978 | CA1039367A2 Peak-to-peak value detector |
| 09/19/1978 | US4115764 Diagnostic system employing a magnetic field responsive apparatus |
| 09/12/1978 | US4114106 Arrangement to indicate signals having a length exceeding a limit value |