| 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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| 05/15/1979 | US4155036 Apparatus for testing cooking range electrical circuitry |
| 05/15/1979 | CA1054679A1 Automatic measurement and display of resonance frequencies of seismic detection elements |
| 05/08/1979 | US4153867 Device for determining the charge condition for a secondary electric storage battery |
| 05/08/1979 | US4153740 Organo-sulfur composition for forming thermoparticulating coating |
| 05/08/1979 | US4153179 Method and apparatus for separating wires |
| 05/08/1979 | CA1054237A1 Speed detector for use with miniature dc motor |
| 05/01/1979 | USRE29983 Self-monitoring battery operated circuit |
| 05/01/1979 | US4152723 Method of inspecting circuit boards and apparatus therefor |
| 05/01/1979 | US4152644 Fixture for testing integrated circuits |
| 05/01/1979 | US4152640 Two phase high voltage insulation testing of multiphase windings |
| 05/01/1979 | US4152639 Electrical circuit voltage and continuity testing device |
| 05/01/1979 | US4152558 Hole sensing device for spike driver |
| 05/01/1979 | CA1053757A1 Ground fault detector |
| 04/24/1979 | US4151461 Tester of dry dielectric strength for insulated electric cable |
| 04/24/1979 | US4151460 High resistance ground fault detector and locator for polyphase electrical systems |
| 04/24/1979 | US4151459 Method of and apparatus for the localizing of security line faults for ski lifts and the like |
| 04/24/1979 | US4151458 Closely spaced pipe-to-soil electrical survey method and apparatus |
| 04/24/1979 | US4151454 Remaining capacity detector of a battery |
| 04/24/1979 | US4151417 Electron beam exposure apparatus |
| 04/24/1979 | CA1053298A1 Magnetic flux shifting ground fault trip indicator |
| 04/17/1979 | US4150435 Tape recorder with display function |
| 04/17/1979 | US4150331 Signature encoding for integrated circuits |
| 04/17/1979 | US4150330 Fuse tester and flashlight |
| 04/17/1979 | CA1052864A1 Dual channel dynamic line isolation monitor |
| 04/17/1979 | CA1052862A1 Battery state of charge gauge |
| 04/10/1979 | US4149162 Battery discriminator circuit for smoke detectors |
| 04/10/1979 | US4149161 Protecting electrical apparatus with gas generating compounds |
| 04/10/1979 | US4149096 Switching matrix with connection modules |
| 04/10/1979 | US4148534 Electrical resistor testing chamber |
| 04/10/1979 | CA1052444A1 Fault locator |
| 04/03/1979 | US4147982 Turbine generator ground current arcing detection apparatus and method |
| 04/03/1979 | US4147977 Motion analyzing system |
| 04/03/1979 | US4147975 Synthetic test circuit for a metal encapsulated high voltage circuit breaker |
| 04/03/1979 | US4147969 Battery pack charger and tester |
| 03/27/1979 | US4146835 Testing the differential response times of a plurality of circuits |
| 03/27/1979 | US4146085 Diagnostic system for heat pump |
| 03/27/1979 | CA1051556A1 Method of and device for testing a digital memory |
| 03/20/1979 | US4145746 Engine tester display and printing techniques |
| 03/20/1979 | US4145653 Waveform analyzer for rotating electrical circuitry |
| 03/20/1979 | US4145620 Modular dynamic burn-in apparatus |
| 03/20/1979 | US4145142 Apparatus for and method of testing direct-view image intensifiers |
| 03/13/1979 | US4144536 Inker network for probing machine |
| 03/13/1979 | US4144493 Integrated circuit test structure |
| 03/13/1979 | US4144488 Investigation of near-surface electronic properties in semiconductors by electron beam scanning |
| 03/13/1979 | US4144487 Electrical cable fault locating apparatus |
| 03/13/1979 | CA1050638A1 Conductor identification arrangement for a cable restoration system |
| 03/07/1979 | EP0000954A2 Methods of and apparatus for controlling capacitance unbalance-to-ground in cables |
| 03/06/1979 | US4143212 Sealed storage battery |
| 03/06/1979 | CA1050116A1 Technique or monitoring the operational integrity of remote analog circuits |
| 02/27/1979 | US4142239 Apparatus for generating digital streams having variable probabilities of error |
| 02/27/1979 | US4142151 Failed diode indicator |
| 02/27/1979 | US4142150 High-speed measurement of ICEO in transistors and opto-isolators |
| 02/27/1979 | US4142145 Method for determining conduction-band edge and electron affinity in semiconductors |
| 02/27/1979 | US4142143 Lightning ground system attachable admittance testing instrument |
| 02/27/1979 | US4142142 High voltage A.C. test set for measuring true leakage current |
| 02/27/1979 | US4141244 Load indicating metering devices for motor driven loads |
| 02/27/1979 | CA1049614A1 Method and apparatus for measuring the state of charge of a battery by monitoring reductions in voltage |
| 02/20/1979 | USRE29918 Contactless LSI junction leakage testing method |
| 02/20/1979 | US4140965 Isolation voltage test apparatus |
| 02/20/1979 | US4140964 High voltage breakdown test circuit for insulation testing utilizing a predetermined fixed amount of energy |
| 02/20/1979 | US4140933 Arrangement for slipring-free measurement of rotor current of an electrical machine |
| 02/20/1979 | CA1049155A1 Integrated circuit test structure |
| 02/20/1979 | CA1049098A1 Latch strobe generator circuit |
| 02/13/1979 | US4139903 Logic state analyzer |
| 02/13/1979 | US4139846 Method and apparatus for supervising battery energy level |
| 02/13/1979 | US4139147 Asynchronous digital circuit testing and diagnosing system |
| 02/13/1979 | CA1048646A1 Testing embedded arrays |
| 02/13/1979 | CA1048605A1 System for localizing a spot along a conductor in which an impedance change such as a break or short circuit occurs |
| 02/07/1979 | EP0000585A1 Automatic control system for processing signals from an overheat monitor of a dynamoelectric machine |
| 02/07/1979 | EP0000489A1 Method for the non-destructive testing of semiconductor substrates |
| 02/06/1979 | US4138670 A.C. powered detecting device with battery backup |
| 02/06/1979 | US4138643 Programmable probe fixture and method of connecting units under test with test equipment |
| 02/06/1979 | US4138186 Test apparatus |
| 02/06/1979 | US4137780 Apparatus for monitoring phase currents and torsional vibrations of a turbine-generator |
| 01/30/1979 | US4137548 Method and apparatus for optimizing color purity in a color kinescope |
| 01/30/1979 | US4137493 Battery charge detector and charging system including such detector |
| 01/23/1979 | US4136312 Method and apparatus for detection of rotor faults in dynamoelectric machines |
| 01/23/1979 | US4135399 Use of an expansion chamber for the production of representative particulate effluent from polymers |
| 01/23/1979 | CA1047112A1 Battery alarm |
| 01/16/1979 | US4135153 Circuit for testing high frequency current amplifying capability of bipolar transistors |
| 01/16/1979 | US4135130 Method of testing gas insulated systems for the presence of conducting particles utilizing a gas mixture of nitrogen and sulfur hexafluoride |
| 01/16/1979 | US4135129 Ground fault circuit interruptor test apparatus |
| 01/16/1979 | US4135118 System for determining the relative angular positions of the rotors of two synchronously driven synchronous motors |
| 01/16/1979 | CA1046646A1 Temperature monitor for semiconductor junction |
| 01/16/1979 | CA1046583A1 Power outlet circuit tester with ground fault testing capability |
| 01/16/1979 | CA1046581A1 Cable terminating and testing unit |
| 01/09/1979 | US4134061 Pipe current detector with plural magnetic flux detectors |
| 01/09/1979 | US4134060 Battery deterioration monitoring apparatus employing voltage comparison means for activation of a battery alarm |
| 01/02/1979 | US4133018 Thyristor fault-detecting apparatus |
| 01/02/1979 | US4132949 Method and apparatus for the continuous, contactless testing of an elongated conductor which consists at least partially of superconductive material |
| 01/02/1979 | US4132948 Test fixture using stock printed circuit board having test pins mounted thereon |
| 01/02/1979 | US4132946 Digital readout test probe |
| 01/02/1979 | CA1045674A1 Gas tube tester |
| 12/19/1978 | US4130795 Versatile LDV burst simulator |
| 12/19/1978 | US4130794 Methods and means for identifying and testing circuit connections |
| 12/19/1978 | CA1044760A1 Methods and equipment for testing reflection points of transmission lines |
| 12/12/1978 | US4129826 Circuit test apparatus |
| 12/12/1978 | US4129825 Electrical conductor and short circuit locator |
| 12/12/1978 | US4129823 System for determining the current-voltage characteristics of a photovoltaic array |
| 12/12/1978 | CA1044322A1 Arrangement for detecting ground leaks in the rotor circuit of a brushless synchronous machine excited by rotating rectifiers |