| Patents for G01R 31 - Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere (152,264) |
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| 11/13/1979 | US4174236 Methods of and apparatus for controlling capacitance unbalance-to-ground in cables |
| 11/13/1979 | CA1066361A1 Probe for measurement of magnetic flux of alternating current polyphase electric machine |
| 11/13/1979 | CA1066358A1 Safety circuit for detecting an electrical insulation defect in an electrical machine |
| 11/06/1979 | US4173736 Capacitance detecting system and method for testing wire connections |
| 11/06/1979 | US4173735 Contact fault detector |
| 11/06/1979 | US4173221 EKG cable monitoring system |
| 10/31/1979 | EP0004969A1 Device for automatically monitoring the state of charge of line-independent current sources |
| 10/30/1979 | US4172993 Environmental hood for testing printed circuit cards |
| 10/30/1979 | CA1065406A1 Method of protecting power transmission lines and apparatus for realizing same |
| 10/30/1979 | CA1065404A1 Battery condition monitoring method and apparatus |
| 10/23/1979 | US4172228 Method for analyzing radiation sensitivity of integrated circuits |
| 10/23/1979 | CA1065062A1 Non-logic printed wiring board test system |
| 10/23/1979 | CA1065016A2 Sensing electrical parameters inside conductors |
| 10/09/1979 | US4170290 Lift and feed mechanism for high speed integrated circuit handler |
| 10/09/1979 | US4170190 Method for detecting and a detector for indicating excessive temperature at electrical wiring devices |
| 10/09/1979 | US4170140 Amplitude detection circuit |
| 10/09/1979 | CA1064140A1 Temperature sensing transmission line with ferromagnetic material |
| 10/09/1979 | CA1064109A1 Method and apparatus for measuring the filling effectiveness of a cable during filling |
| 10/03/1979 | EP0004382A1 Method and apparatus for continuously showing the quality of a battery |
| 10/02/1979 | US4170003 Device for examination of distances in a picture |
| 10/02/1979 | CA1063674A1 Battery condition monitoring method and apparatus |
| 09/25/1979 | US4169244 Electron probe testing, analysis and fault diagnosis in electronic circuits |
| 09/25/1979 | US4168796 Tester with driver/sensor circuit having programmable termination devices |
| 09/25/1979 | CA1063253A1 Integrated circuit substitution device |
| 09/25/1979 | CA1063177A1 Supervisory circuit for monitoring speaker coils |
| 09/25/1979 | CA1063176A1 Sensing electrical parameters inside conductors |
| 09/25/1979 | CA1063174A1 Method and apparatus for locating a fault on a line |
| 09/19/1979 | EP0004153A1 Method and apparatus for comparing logic functions |
| 09/18/1979 | US4168527 Analog and digital circuit tester |
| 09/18/1979 | US4168467 Measurement of pulse duration |
| 09/18/1979 | US4168463 Arrangement for the synthetic testing of tripolar high-voltage circuit breakers |
| 09/18/1979 | US4168432 Method of testing radiation hardness of a semiconductor device |
| 09/11/1979 | US4167780 Data processing unit having scan-in and scan-out means |
| 09/11/1979 | CA1062335A1 General purpose digital logic monitor |
| 09/11/1979 | CA1062334A1 Digital input circuit with fault detection means |
| 09/05/1979 | EP0003933A1 Apparatus for establishing temporary test-contact connexions to electric circuits and its use. |
| 09/05/1979 | EP0003917A1 A method of and apparatus for determining the capacity of a storage battery |
| 08/28/1979 | US4166243 Thermocouple failure detector |
| 08/28/1979 | US4166242 Tractor cable light circuit checker |
| 08/28/1979 | CA1061409A1 Method and apparatus for testing transmission lines |
| 08/21/1979 | US4165482 Cable fault location |
| 08/21/1979 | US4165481 Versatile ignition defeat and signal conditioning |
| 08/21/1979 | US4165270 Circuit integrity tester |
| 08/21/1979 | CA1061016A1 Smoke sensing fire alarm |
| 08/21/1979 | CA1060952A1 Method and apparatus for detecting faults in buried insulated conductors |
| 08/14/1979 | US4164771 Wireless emergency power interrupting system for multibranch circuits |
| 08/14/1979 | US4164705 Brushless exciter fault indicator system |
| 08/14/1979 | US4164703 Methods of and apparatus for detecting openings in cable jackets |
| 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 |
| 08/14/1979 | US4164701 Portable device for testing electrical wiring circuits and power tools and equipment |
| 08/09/1979 | WO1979000543A1 Method and device for electrically connecting a removable article,in particular a portable electronic card |
| 08/08/1979 | EP0003433A1 Improvements in or relating to the location of contact faults on electrically conductive cables |
| 08/07/1979 | US4163937 Multi-function test apparatus to test, selectively and as desired, electrical circuits, circuit components and transistors |
| 08/07/1979 | US4163936 Audible tester for alarm circuits |
| 08/07/1979 | US4163935 Apparatus for checking a battery voltage |
| 08/07/1979 | CA1060108A1 Test code generator |
| 08/07/1979 | CA1060100A1 Pulse discriminator and misprobe detector for digital logic tester probe |
| 07/31/1979 | US4163268 Circuit arrangement for monitoring readiness for operation of actuating devices of a safety apparatus for vehicles |
| 07/31/1979 | US4163227 Apparatus for monitoring arcing of brushes in a dynamoelectric machine |
| 07/31/1979 | US4163210 Arrangement for checking a contact inserted between a transmitter circuit and a receiver circuit to allow electrical signals to be transmitted |
| 07/31/1979 | US4163194 Voltage-current-power meter for photovoltaic solar arrays |
| 07/31/1979 | US4163186 Battery state-of-charge indicator |
| 07/24/1979 | US4162531 Method and apparatus for programmable and remote numeric control and calibration of electronic instrumentation |
| 07/24/1979 | US4161962 Circuit for determining the response current of magnetic valves |
| 07/17/1979 | US4161688 Cable fault locating apparatus having an earth current canceller |
| 07/17/1979 | US4161661 System for automatically switching transformer coupled lines |
| 07/17/1979 | US4161276 Complex logical fault detection apparatus and method |
| 07/10/1979 | US4160947 Apparatus and method for electrically testing multi-core cable |
| 07/10/1979 | CA1058329A1 Automated integrated circuit manufacturing system |
| 07/03/1979 | US4160207 Printed circuit board tester with removable head |
| 07/03/1979 | US4160176 Electronic watch |
| 06/27/1979 | EP0002451A1 Method and apparatus for the touch-free measuring of impurities in semiconductors |
| 06/26/1979 | US4159446 Acoustic diagnostic system for contacts in power distribution systems |
| 06/26/1979 | CA1057404A1 Failure detect circuit |
| 06/19/1979 | CA1056910A1 Method and apparatus for detection of short-circuits |
| 06/19/1979 | CA1056909A1 Apparatus for localization of a line fault |
| 06/19/1979 | CA1056908A1 Method and apparatus for locating a fault on a line |
| 06/19/1979 | CA1056907A1 Process and apparatus for locating faults on a line |
| 06/12/1979 | US4158171 Wafer edge detection system |
| 06/12/1979 | US4158169 Corona testing apparatus including acoustic waveguides for transmitting acoustic emissions from electrical apparatus |
| 06/12/1979 | US4158168 Acoustic waveguides for sensing and locating corona discharges |
| 06/12/1979 | US4158167 Apparatus and method for electrically testing multi-core cables and automatically indicating the presence of a defective core |
| 06/12/1979 | CA1056458A1 Common diagnostic bus for computer systems to enable testing concurrently with normal system operation |
| 06/05/1979 | US4157541 Device for detecting cable insulation faults |
| 06/05/1979 | US4157526 Multi-stage heat sensing cable and emergency communication system |
| 06/05/1979 | US4157520 Magnetic flux shifting ground fault trip indicator |
| 06/05/1979 | US4157497 Qualification test of gallium arsenide |
| 06/05/1979 | US4157496 Circuit for testing protection devices |
| 06/05/1979 | US4157040 Apparatus for collecting pyrolysates from a gas-cooled dynamoelectric machine |
| 06/05/1979 | CA1056015A1 Method for locating a fault on a line |
| 06/05/1979 | CA1056011A1 Apparatus for localization of a line fault |
| 05/29/1979 | US4156864 Pressure switch checking device for locomotives |
| 05/29/1979 | US4156846 Detection of arcing faults in generator windings |
| 05/29/1979 | US4156845 Apparatus for identifying faulty diodes in automotive alternators |
| 05/29/1979 | US4156841 Contact fingers for a testing apparatus for surface insulation resistivity |
| 05/29/1979 | US4156430 Instrumentation for pacemaker diagnostic analysis |
| 05/22/1979 | US4156189 Power supply fault analyzer |
| 05/22/1979 | US4156188 Method and apparatus for testing the magnetic properties of rotors for hysteresis motors |
| 05/22/1979 | US4156186 Method and apparatus for determining negative sequence current in a multi-phase dynamoelectric machine |
| 05/22/1979 | CA1055104A1 Apparatus for measuring the beam current of charged particle beam |