| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 05/01/1984 | US4446413 Method for reducing the consumption of a stepping motor and device for carrying out the method |
| 05/01/1984 | US4446385 Voltage comparator with a wide common mode input voltage range |
| 04/25/1984 | EP0106029A1 Method and apparatus for measuring the amplitude of a noise-affected periodic signal without phase reference |
| 04/24/1984 | US4445084 Circuit tester |
| 04/18/1984 | EP0105440A2 Spectrometer objective for particle-beam measuring techniques |
| 04/18/1984 | EP0105439A2 Spectrometer objective with parallel objective and spectrometer fields for use in the potential measuring technique |
| 04/18/1984 | EP0105410A1 Current circuit monitoring |
| 04/10/1984 | CA1165398A1 Adjustable flux generator for a magnetically activated electronic switch |
| 04/10/1984 | CA1165397A1 Electromagnetic device utilizing a magnetically activated electronic switch |
| 04/10/1984 | CA1165396A1 Self-calibrating overcurrent detector |
| 04/10/1984 | CA1165391A1 Zero crossing phase fired controller |
| 04/04/1984 | EP0104478A1 Device and method for measuring the voltage of a hidden object |
| 04/04/1984 | EP0021340B1 Apparatus for measuring and evaluating the peak values of a pulsatory voltage signal |
| 04/03/1984 | US4441031 Power source voltage change discrimination circuit |
| 03/20/1984 | US4438403 Fault indicator with combined trip and reset winding |
| 03/20/1984 | US4438394 Capacitively-coupled inductive sensor |
| 03/20/1984 | US4438349 Hysteresis circuit having a stable output free from noise superposed on input signal |
| 03/20/1984 | CA1164067A1 Sensor fault detection by activity monitoring |
| 03/14/1984 | EP0102618A2 Memory circuit with power supply voltage detection means |
| 03/13/1984 | US4437058 Indicating means for measuring instrument |
| 03/13/1984 | CA1163692A1 Testing coins |
| 03/06/1984 | US4435683 RF Imbalance detector |
| 03/06/1984 | US4435658 Two-level threshold circuitry for large scale integrated circuit memories |
| 03/06/1984 | US4435651 Zero voltage switch |
| 03/06/1984 | CA1163331A1 Switched capacitor comparator |
| 02/28/1984 | US4434378 D.C. Power monitor |
| 02/22/1984 | EP0101060A2 Scaled analog to digital converter |
| 02/21/1984 | US4433296 Electrostatic system analyzer |
| 02/21/1984 | CA1162587A1 Apparatus and method for measuring and maintaining copy quality in an electrophotographic copier |
| 02/01/1984 | EP0099718A2 An intermediate value selection circuit |
| 02/01/1984 | EP0099539A1 Optical electric-field measuring apparatus |
| 01/31/1984 | US4429416 Multistage cascade/cascode limiting IF amplifier and meter circuit |
| 01/31/1984 | US4429271 Digital capacitance measuring test set and test circuit incorporated therein |
| 01/31/1984 | US4429236 Apparatus for generating pulses upon decreases in supply voltage |
| 01/31/1984 | US4429185 Voltage detector circuit |
| 01/24/1984 | US4428020 Power supply sensing circuitry |
| 01/24/1984 | US4428017 For monitoring the current flow in an electrical load |
| 01/17/1984 | US4426617 Audible test device |
| 01/03/1984 | US4424512 Fault indicator having increased sensitivity to fault currents |
| 01/03/1984 | US4424491 Automatic voltage imbalance detector |
| 01/03/1984 | US4424457 Voltage level detecting circuit |
| 12/27/1983 | US4423458 Signal processing system for overload relay or the like |
| 12/27/1983 | US4423372 Instrument for monitoring the radiation hazard arising from electric and/or magnetic radio-frequency fields |
| 12/27/1983 | CA1159516A1 Method of measuring backelectromotive forces of aluminum electrolysis cells |
| 12/20/1983 | US4422039 Self-powered ammeter |
| 12/13/1983 | US4420698 Peak detector |
| 12/07/1983 | EP0095671A1 Voltage comparator circuit |
| 12/07/1983 | EP0095590A1 Method of monitoring a measured quantity |
| 12/06/1983 | US4419595 Analog or gate circuit |
| 12/06/1983 | CA1158315A1 Fault indicator with flux concentrating means |
| 11/29/1983 | US4418341 Noise detection apparatus |
| 11/29/1983 | US4418314 High impedance fast voltage probe |
| 11/29/1983 | US4418290 Voltage comparator |
| 11/22/1983 | US4417205 Detection apparatus utilizing a hall effect device |
| 11/22/1983 | US4417198 Average responding RMS indicating type transducer |
| 11/16/1983 | EP0093803A2 Indicating system |
| 11/15/1983 | CA1157099A1 Noise detection apparatus |
| 11/15/1983 | CA1157095A1 Zero-current detector for high voltage dc transmission line |
| 11/09/1983 | EP0093606A1 Voltage level detecting circuitry |
| 11/09/1983 | EP0093285A1 Interconnection of several voltage or current sources to a common measuring device |
| 11/08/1983 | US4414543 Ground fault indicator |
| 11/01/1983 | US4413181 Arrangement for stroboscopic potential measurements with an electron beam testing device |
| 10/27/1983 | WO1983003533A1 Improved inductance to frequency converter circuit |
| 10/26/1983 | EP0092151A1 Device for optically indicating the working condition of a power supply network |
| 10/26/1983 | EP0091996A1 An electric circuit for detecting the maximum value of a plurality of input currents and a signal processing circuit employing it. |
| 10/25/1983 | US4412191 Method and arrangement for quantitative potential measurements on surface-wave filters |
| 10/25/1983 | US4412177 Eddy current inspection tool which is selectively operable in a discontinuity detection mode and a discontinuity magnitude mode |
| 10/18/1983 | US4410812 Voltage-frequency converter |
| 10/18/1983 | US4410762 Dual mode tone detector circuit |
| 10/18/1983 | CA1155497A1 Electromagnetic device utilizing a pair of magnetically activated electronic switches |
| 10/18/1983 | CA1155496A1 Electronic-magnetic current isolator circuit |
| 10/12/1983 | EP0091397A1 Measuring arrangement for the exact positioning of the begin of the measuring range of a measuring converter |
| 10/11/1983 | US4409497 Window comparator circuit |
| 10/11/1983 | CA1155183A1 Signal detecting circuit |
| 10/05/1983 | EP0090349A1 Voltage comparator circuit |
| 10/04/1983 | US4408133 Comparator circuit with improved reliability and/or speed |
| 09/21/1983 | EP0089048A2 Circuit for detecting and memorising defects in power supply systems |
| 09/20/1983 | CA1154094A1 Digital read-out meter circuit with variable meter update rate |
| 09/14/1983 | EP0088477A1 Current-discrimination arangement |
| 09/13/1983 | US4404520 Differential absolute equalization measurement circuit |
| 09/07/1983 | EP0087893A1 Peak amplitude detector |
| 09/07/1983 | EP0087608A1 Logic timing analyzer |
| 09/06/1983 | US4403183 Active voltage probe |
| 09/06/1983 | US4403159 Circuit for evaluating signals |
| 08/31/1983 | EP0087152A2 Secondary electron spectrometer and method of using the same |
| 08/31/1983 | EP0086778A1 Battery voltage monitoring and indicating apparatus. |
| 08/30/1983 | US4401899 Current comparator circuit |
| 08/30/1983 | US4401104 Thermal gain sensor |
| 08/24/1983 | EP0086671A1 Source voltage build-up detecting circuit |
| 08/24/1983 | EP0086373A1 Magneto-optical converter |
| 08/23/1983 | US4400633 Level detection circuit |
| 08/18/1983 | WO1983002829A1 Measurement of electrical signals with picosecond resolution |
| 08/16/1983 | US4399414 Low-noise pulse conditioner |
| 08/16/1983 | CA1152157A1 Power line fault detector circuit |
| 08/09/1983 | US4398261 Device for measuring the level of a variable signal with logarithmic conversion |
| 08/09/1983 | US4398188 Ground circuit voltage detector |
| 08/09/1983 | CA1151771A1 Method and apparatus for enhancing the output of an rms converter |
| 08/03/1983 | EP0084722A1 Differential circuit |
| 07/26/1983 | CA1150842A1 Slide-back waveform analyzer |
| 07/20/1983 | EP0083804A1 An AC current detection circuit for a rotor driving supply source of a rotating anode X-ray tube |