| Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286) |
|---|
| 06/14/1983 | US4387963 Temperature compensation for a liquid crystal display via capacitance compensation of the liquid crystal material |
| 06/14/1983 | CA1148246A1 Earth leakage current breaker |
| 06/09/1983 | WO1983002024A1 Technique of reconstructing and displaying an analog waveform from a small number of magnitude samples |
| 06/08/1983 | EP0080755A1 Sensor circuit for detecting the water content in fuel and use of such a sensor circuit |
| 06/08/1983 | EP0080632A1 Oil deterioration detector |
| 06/01/1983 | EP0080410A1 Device for determining and following the instantaneous coordinates of the extreme of a function y = f(x) characteristic of a system with an input x and an output y |
| 06/01/1983 | EP0080140A1 A method of and measuring instrument for measuring the overall phase and amplitude distortion of a transmission channel |
| 05/31/1983 | US4386312 Linear capacitive sensor system |
| 05/31/1983 | CA1147390A1 Dielectric constant detector |
| 05/25/1983 | EP0079504A1 Protective relaying methods and apparatus |
| 05/18/1983 | EP0078898A1 Bridge circuit for measuring purposes |
| 05/10/1983 | US4383217 Collinear four-point probe head and mount for resistivity measurements |
| 05/03/1983 | US4381677 Reactance measurement circuit |
| 04/27/1983 | EP0015253B1 A transducer for sensing a variable parameter and for converting a so-obtained analog signal to a digital signal |
| 04/26/1983 | US4381485 Microwave test apparatus and method |
| 03/30/1983 | EP0075466A1 Conductivity detector and method |
| 03/22/1983 | US4377783 Moisture detector |
| 03/16/1983 | EP0074204A1 Determination of system response |
| 03/15/1983 | CA1143008A1 Impedance-measuring device for impedance protection |
| 03/15/1983 | CA1143007A1 Process and system for the determination of a longitudinal equivalent reactance in an electric power supply line |
| 03/08/1983 | CA1142593A1 Method and apparatus for detecting ground faults in isolated power systems |
| 03/01/1983 | CA1142228A1 Identification of materials using their complex dielectric response |
| 02/03/1983 | WO1983000390A1 Liquid contamination detection method and device |
| 01/26/1983 | EP0070301A1 Reactance measurement circuit. |
| 01/25/1983 | US4370611 Identification of materials using their complex dielectric response |
| 01/11/1983 | CA1139369A1 Method and apparatus for measuring the resistivity of fluids in a borehole |
| 01/05/1983 | EP0068568A1 Measuring system for measuring the variation of the capacitive impedance of a bearing installed in a housing |
| 01/04/1983 | US4367438 Electronic measuring apparatus |
| 01/04/1983 | CA1138932A1 Device for measuring and indicating changes in resistance of a living body |
| 12/28/1982 | US4366474 Identification of electric power network phases experiencing disturbances |
| 12/22/1982 | EP0067432A1 Arrangement for measuring the electric resistance and the temperature of thin metallic conducting films deposited by vapour deposition or sputtering on substrates during the manufacture of the films |
| 12/21/1982 | US4365191 Method and apparatus for electrical surveys of offshore metal structures with correction for distance |
| 12/14/1982 | US4364008 Focusing probe for moisture measurement device |
| 12/14/1982 | US4364007 Unintentional impedance detection system |
| 12/14/1982 | CA1137611A1 Method and apparatus for fault direction determination |
| 12/14/1982 | CA1137554A1 Reflection coefficient measurements |
| 12/01/1982 | EP0065675A1 Method and arrangement for measuring the impedance of a sensor |
| 11/23/1982 | US4360774 Apparatus for measuring the surface insulation characteristics of coatings on magnetic materials |
| 11/23/1982 | CA1136241A1 Detector for locating the interfacial boundary level between two liquids |
| 11/16/1982 | US4359682 Method and apparatus for testing the output reflection coefficient of an automatic level controlled source |
| 11/11/1982 | WO1982003921A1 Microwave impedance measurement apparatus |
| 11/10/1982 | EP0064413A1 Microwave impedance measurement apparatus |
| 11/10/1982 | EP0064198A1 Apparatus for measuring noise factor and available gain |
| 11/02/1982 | CA1134913A1 Finish measuring method and apparatus |
| 10/28/1982 | WO1982003694A1 Linear capacitive sensor system |
| 10/27/1982 | EP0063520A1 Electrical measuring switch for reactive impedances, and measuring bridge using such a switch |
| 10/26/1982 | US4356444 Test system for cathodic protection circuit of an underground pipeline |
| 10/26/1982 | US4356150 Multilayer porous oxide and nitride layers deposited over metallic conductive thin films |
| 10/12/1982 | US4354219 Capacitance sensing device |
| 10/06/1982 | EP0061704A1 Method and arrangement for determining the total leakage impedance in an unearthed AC network |
| 10/05/1982 | US4353029 Self inverting gauging system |
| 10/05/1982 | US4353027 Contactless resistivity measurement method and apparatus |
| 10/05/1982 | US4352288 Measurement of fluid conductivity and density |
| 10/05/1982 | CA1133061A1 Front-end circuit apparatus for impedance measurements and the like |
| 09/28/1982 | US4352182 Method of and device for testing the quality of digital speech-transmission equipment |
| 09/28/1982 | US4352137 Methods and apparatus for fault detection |
| 09/28/1982 | US4352136 Impedance-measuring device for impedance protection |
| 09/28/1982 | US4352060 Apparatus for measuring the interior dimensions of a cast iron mold |
| 09/28/1982 | US4352059 Determination of moisture level in materials |
| 09/28/1982 | US4352058 Method and apparatus for measuring leakage to ground |
| 09/22/1982 | EP0060588A1 Device for measuring the variation of a capacitive impedance, the dielectric of which consists of a lubricant |
| 09/22/1982 | EP0060319A1 Process and device for measuring the capacitances of a capacitive fence |
| 09/21/1982 | CA1132199A1 Apparatus and method for monitoring web conductivity |
| 09/14/1982 | US4349707 System for measuring the attenuation on a transmission path |
| 09/08/1982 | EP0059416A1 Ground fault detecting device for use with a DC circuit |
| 09/07/1982 | US4347740 Capacitive level sensing device |
| 09/01/1982 | EP0058960A1 Housing structure with leakage current detecting means |
| 09/01/1982 | EP0058879A1 Test method for the manufacturing of electric windings, for example for transformers, and apparatus for the use of the method |
| 08/31/1982 | US4347478 Capacitive gauge |
| 08/24/1982 | CA1130381A1 Electronic selector switch, particularly for telemetrical use in radio sondes |
| 08/17/1982 | US4345204 Bridgeless dielectric measurement |
| 08/17/1982 | US4345203 Device for measuring the lubrication of surfaces rolling or sliding relative to each other and lubricated with a lubricant |
| 08/17/1982 | US4345202 Method of detecting soot in engine oil using microwaves |
| 08/10/1982 | US4344029 Automatic IM distortion test selector |
| 08/10/1982 | US4344028 Testing device for low-frequency amplifiers |
| 08/05/1982 | WO1982002595A1 Reactance measurement circuit |
| 07/28/1982 | EP0056768A2 Method for ground illumination and calculation of E and O of the ground using an electromagnetic pulse, and antenna to carry out this method |
| 07/27/1982 | US4342089 Method of and apparatus for automatic measurement of circuit parameters with microprocessor calculation techniques |
| 07/20/1982 | CA1128145A1 Procedure for shared-time processing of digital signals and application to a multiplexed self-adapting echo canceler |
| 07/20/1982 | CA1128129A1 Method for measuring low capacities |
| 07/14/1982 | EP0055810A2 A dielectric moisture monitor |
| 07/13/1982 | US4339719 Conductivity sensor for monitoring corrodents being deposited in a steam turbine |
| 07/07/1982 | EP0055331A2 Method of trimming thin metal resistors |
| 07/06/1982 | US4338648 Gapless discharge counter for lightning arresters |
| 07/06/1982 | US4338595 Microwave leakage detector |
| 06/30/1982 | EP0054940A1 Non-grounding checking system |
| 06/30/1982 | EP0054813A2 A capacitance humidity sensor and a method for preparation thereof |
| 06/22/1982 | US4336496 Electrical contact test apparatus to test contact resistance of a sample terminal |
| 06/22/1982 | US4336494 Insulation resistance tester |
| 06/22/1982 | CA1126340A1 Measuring radio-frequency impedance |
| 06/16/1982 | EP0053786A1 Resistance measuring circuit |
| 06/16/1982 | EP0053628A1 Determination of moisture level in materials |
| 06/15/1982 | US4335350 Apparatus for probing semiconductor wafers |
| 06/15/1982 | US4335349 Simulated ohms generation method and apparatus for calibrating resistance type measuring instruments |
| 06/15/1982 | CA1125885A1 Apparatus and method for detecting wet and icy conditions on the surface of a pathway |
| 06/08/1982 | US4334187 Phase sensor for R.F. transmission lines |
| 05/25/1982 | US4331923 Salts monitoring device |
| 05/25/1982 | CA1124326A1 Microwave moisture-profile gauge |
| 05/11/1982 | CA1123225A1 Compensated capacitive transducer demodulator circuit |
| 05/04/1982 | US4328460 Instrument indicator of the proliferation magnitude in a tank |