| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
|---|
| 04/22/1980 | CA1076234A1 Amplitude responsive speed-switch control |
| 04/22/1980 | CA1076208A1 Electrical output peak detecting apparatus |
| 04/16/1980 | EP0009735A1 Apparatus for detecting opposite phase and open phase |
| 04/16/1980 | EP0009649A1 Circuit for controlling command conditions |
| 04/15/1980 | US4198683 Multiple waveform storage system |
| 04/15/1980 | US4198607 Input circuit for a measuring amplifier device |
| 04/15/1980 | US4198606 Tuning apparatus |
| 04/15/1980 | US4198581 Temperature compensating comparator |
| 04/08/1980 | US4197472 Voltage comparator having capacitively cascade-connected inverting amplifiers |
| 04/08/1980 | CA1075327A1 Window comparator |
| 04/01/1980 | US4196428 Device for monitoring operational readiness of a gas-measuring instrument |
| 04/01/1980 | US4196388 Apparatus for monitoring high alternating voltages |
| 04/01/1980 | US4196387 Apparatus for measuring output DC current of rectifier devices |
| 03/25/1980 | US4195266 Commutating signal level translator |
| 03/25/1980 | US4195264 Noise detection circuit |
| 03/25/1980 | US4195240 Voltage comparator circuit having dead zone |
| 03/25/1980 | CA1074400A1 Apparatus for testing the shaft/bearing insulation of a turbo-machine |
| 03/19/1980 | EP0008872A1 A circuit for indicating the reverse connection of connection leads with the terminals of an electromotive force source |
| 03/18/1980 | US4194240 Precision envelope detector and linear rectifier circuitry |
| 03/11/1980 | CA1073552A1 Constant modulation index technique for measuring the derivatives of device parameters |
| 03/05/1980 | EP0008371A1 Circuit with a rectifier and a logarithmic amplifier |
| 03/04/1980 | US4191925 Power line protection circuit |
| 03/04/1980 | US4191900 Precision plural input voltage amplifier and comparator |
| 02/26/1980 | US4190827 Multichannel salinity meter |
| 02/26/1980 | CA1072644A1 High accuracy mos comparator |
| 02/26/1980 | CA1072630A1 Battery charge detector and charging system including such detector |
| 02/19/1980 | US4189673 Pen-shaped precision multi-level current mode logic test probe |
| 02/19/1980 | CA1072198A1 Automatic transfer control device and voltage sensor |
| 02/12/1980 | US4188586 Demodulator circuit for chopper amplifier |
| 02/06/1980 | EP0007907A1 Audible voltage-impedance tester |
| 02/05/1980 | US4187537 Full-wave rectifier |
| 02/05/1980 | US4187523 Detecting a short circuit fault in a dynamo electric machine |
| 02/05/1980 | US4187460 Capacitance measuring by comparison to reference capacitance |
| 02/05/1980 | US4187459 Digital measurement of impedance ratios |
| 01/29/1980 | US4186338 Phase change detection method of and apparatus for current-tracing the location of faults on printed circuit boards and similar systems |
| 01/15/1980 | US4184151 Circuit for digitally processing exposure information |
| 01/15/1980 | US4184113 Method of counting electrical load current pulsations |
| 01/09/1980 | EP0006717A1 Analog to digital converter |
| 01/08/1980 | US4183025 Level indicating system |
| 01/08/1980 | US4183021 Circuit arrangement |
| 01/08/1980 | US4183016 Parallel analog-to-digital converter with increased resolution |
| 01/08/1980 | CA1069586A1 Transducer for the measurement of polyphase current independently of frequency |
| 01/01/1980 | US4181842 D.C. monitoring circuit |
| 01/01/1980 | CA1069223A Data derandomizer and method of operation for radiation imaging detection systems |
| 01/01/1980 | CA1069218A Totalizer |
| 12/25/1979 | US4180775 Magnetic thin-film split-domain current sensor-recorder |
| 12/25/1979 | US4180773 Voltage phase testing and indicating device |
| 12/25/1979 | CA1068824A Root mean square detector |
| 12/25/1979 | CA1068820A Low power detector circuit |
| 12/18/1979 | US4179666 Method and circuit for controlling the output signal of a variable control circuit |
| 12/18/1979 | US4179625 Noise pulse presence detection circuit |
| 12/18/1979 | CA1068408A1 Circuit and method for digitally measuring signal levels, of pcm encoded signals |
| 12/18/1979 | CA1068343A1 Inductive load current measuring circuit |
| 12/12/1979 | EP0006023A1 Analogue-to-digital signal conversion and storage system |
| 12/11/1979 | US4178560 Phase comparator arrangement for controlling an electrical member |
| 12/04/1979 | US4177424 Methods of and a circuit for monitoring the amplitude of sine wave-shaped signals |
| 12/04/1979 | US4177394 Comparator circuit having multi-functions |
| 12/04/1979 | CA1067581A1 Power brown-out detector |
| 11/29/1979 | WO1979000996A1 Method and apparatus for simultaneously recording voltage and voltage derivative in potentiometric stripping analysis |
| 11/27/1979 | US4176393 A.C. to D.C. voltage converter |
| 11/27/1979 | US4176337 Apparatus for measuring the time between received pulses |
| 11/27/1979 | US4176315 Miniature electrical voltage and continuity tester with circuit compartment and test lead compartment casing |
| 11/27/1979 | US4176314 Double integration method for measuring deviation of standard and reference analog quantities |
| 11/27/1979 | US4176312 Electrical circuitry for measuring low level signals |
| 11/20/1979 | US4175252 Meter drive circuit |
| 11/14/1979 | EP0005289A1 Multi-channel analyzer |
| 11/06/1979 | US4173756 Abnormal voltage detection circuit |
| 11/06/1979 | CA1065984A1 Apparatus for calculating amplitude values of sinusoidal waves |
| 10/23/1979 | CA1065018A1 Battery voltage detection and warning means |
| 10/17/1979 | EP0004734A1 Comparator |
| 10/16/1979 | US4171512 Circuit for preventing breakdown of a load resulting from wrong connection of a power source |
| 10/16/1979 | CA1064562A1 Current transformer assembly for dynamoelectric machines |
| 10/04/1979 | WO1979000747A1 Transducers |
| 10/02/1979 | US4169969 Apparatus for detecting in-band signalling signals |
| 09/19/1979 | EP0004037A2 Method and apparatus for measuring electric currents or tensions in a plurality of current or voltage circuits |
| 09/18/1979 | CA1062812A1 Continuously monitoring ratiometer |
| 09/11/1979 | US4167706 Two-wire frequency to DC converter |
| 09/04/1979 | US4166974 Apparatus and method for measuring capacitive energy |
| 09/04/1979 | CA1061863A1 Rectifying circuit |
| 08/28/1979 | US4166242 Tractor cable light circuit checker |
| 08/28/1979 | US4166218 P-i-n diode detector of ionizing radiation with electric field straightening |
| 08/21/1979 | US4165528 Fault indicator and means for resetting same |
| 08/21/1979 | CA1060953A1 Digital volt-ohmmeter |
| 08/14/1979 | US4164702 Apparatus to test proper wiring of electrical wall receptacles especially if the ground and neutral wires are reversed with respect to the hot wire |
| 08/07/1979 | US4163940 Electrical measurement and noise suppression |
| 08/07/1979 | US4163935 Apparatus for checking a battery voltage |
| 08/07/1979 | US4163909 Peak detecting circuitry and dual threshold circuitry therefor |
| 08/07/1979 | CA1060100A1 Pulse discriminator and misprobe detector for digital logic tester probe |
| 07/24/1979 | US4162453 Duration range determination of incursions by a variable signal |
| 07/24/1979 | US4162444 Peak level detector |
| 07/24/1979 | US4162440 Limit controller |
| 07/24/1979 | US4161962 Circuit for determining the response current of magnetic valves |
| 07/24/1979 | CA1059214A1 Method and apparatus for measuring the polarizing potential of insulated metal structures |
| 07/17/1979 | US4161700 Analog comparator |
| 07/17/1979 | US4161691 Multi-purpose digital measuring apparatus |
| 07/17/1979 | CA1058708A1 Device for measuring extra high voltage line current |
| 07/12/1979 | WO1979000389A1 Audible voltage-impedance tester |
| 07/11/1979 | EP0002790A2 Measuring device for frequency analysis of signal levels within a large dynamic range |
| 07/10/1979 | US4160922 Method of generating a direct current control signal from a noisy alternating current signal |
| 07/03/1979 | US4160206 Audible voltage-impedance tester |