| 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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| 05/17/1977 | US4024523 Battery condition monitoring method and apparatus |
| 05/17/1977 | US4024415 Detecting device for detecting battery outlet voltage |
| 05/17/1977 | US4023931 Means and method for measuring levels of ionic contamination |
| 05/17/1977 | US4023412 Method and apparatus for detecting temperature variation utilizing the Curie point of a ferromagnetic material |
| 05/10/1977 | US4023154 Apparatus for detecting location of metal cable failure |
| 05/10/1977 | US4023153 Device for indicating any wire breaking in parallel connected plural loads |
| 05/10/1977 | US4023142 Common diagnostic bus for computer systems to enable testing concurrently with normal system operation |
| 05/10/1977 | US4023102 Test fixture |
| 05/10/1977 | US4023097 Noise and dielectric absorption compensation circuit |
| 05/10/1977 | US4023095 Circuit for measuring the sensitivity of a cardiac pacer |
| 05/10/1977 | US4023091 Apparatus for detecting axial displacements in power windings of electric induction machines |
| 05/10/1977 | US4022990 Technique and apparatus for measuring the value of a capacitance in an electrical circuit such as a telephone communication line |
| 05/03/1977 | US4021735 Method and apparatus for making a metal to semiconductor contact |
| 05/03/1977 | US4021732 Convertible electric tester for use with a flashlight and including a jack plug with tubular shunt |
| 05/03/1977 | US4021731 Waveguide fault location system |
| 05/03/1977 | US4021730 Electrical conductor and short circuit locator |
| 05/03/1977 | US4021727 Method of an device for non-destructive pressure measurement of fluorescent lamps |
| 05/03/1977 | US4021718 Battery monitoring apparatus |
| 04/26/1977 | US4020469 Programmable arrays |
| 04/26/1977 | US4020414 Plural comparator indicator of battery voltage |
| 04/26/1977 | US4020413 Emergency auto ignition kit and spark plug tester |
| 04/26/1977 | US4020243 Electrical measuring system for testing electrical components |
| 04/19/1977 | US4019128 Indicator light and testing circuit |
| 04/19/1977 | US4019112 Battery checker circuit |
| 04/12/1977 | US4017793 Printed circuit board circuit tester |
| 04/12/1977 | US4017750 Circuit arrangement for effectively making integrated impedances accurate |
| 04/12/1977 | US4017724 Apparatus for measuring battery depletion by monitoring reductions in voltage |
| 04/05/1977 | US4016492 Pulse discriminator and misprobe detector for digital logic tester probe |
| 04/05/1977 | US4016489 Ground-test circuit with minimal ground current |
| 04/05/1977 | US4016488 Pulsing ground-test circuit |
| 04/05/1977 | US4016457 Failsafe system for skid control systems and the like |
| 03/29/1977 | US4015203 Contactless LSI junction leakage testing method |
| 03/29/1977 | US4015202 Automatic measurement and display of resonance frequencies of seismic detection elements |
| 03/29/1977 | US4015201 Electrical continuity and voltage testing device |
| 03/29/1977 | US4015200 Multiconductor cable testing apparatus |
| 03/22/1977 | US4013951 Circuit testing apparatus |
| 03/22/1977 | US4013948 Discharge detection system for determining the distance to a dielectric weak point in a cable |
| 03/22/1977 | US4013947 Central coupler for a centralized monitor system for motor vehicles |
| 03/15/1977 | US4012695 Method and apparatus for quality control of semiconductor devices and integrated circuits |
| 03/15/1977 | US4012693 Printed circuit board testing |
| 03/15/1977 | US4012681 Battery control system for battery operated vehicles |
| 03/15/1977 | US4012668 Ground fault and neutral fault detection circuit |
| 03/15/1977 | US4012625 Non-logic printed wiring board test system |
| 03/15/1977 | US4012149 Measuring method and equipment for locating a break in an optical cable |
| 03/15/1977 | US4012097 Combined test clip and component extraction tool |
| 03/08/1977 | US4011507 Full cycle current detector |
| 03/08/1977 | US4011449 Apparatus for measuring the beam current of charged particle beam |
| 03/01/1977 | US4010418 Transistor circuits |
| 03/01/1977 | US4010416 Method and apparatus for testing dielectric adequacy and for indicating physical defects in a nonconducting material |
| 02/22/1977 | US4009437 Net analyzer for electronic circuits |
| 02/22/1977 | US4009436 Latch strobe generator circuit |
| 02/22/1977 | US4008755 Leak indicating apparatus for a closed cooling system of an electric machine |
| 02/15/1977 | US4008389 Apparatus for checking the operation of control circuits |
| 02/15/1977 | US4007713 Test circuit |
| 02/01/1977 | US4006410 Corona discharge detection system for detecting the presence of any corona discharge in an electrical system |
| 02/01/1977 | US4006407 Non-destructive testing systems having automatic balance and sample and hold operational modes |
| 02/01/1977 | US4006403 Engine performance analyzer |
| 02/01/1977 | US4006320 Fault locating system and method for transmission lines and repeater stations |
| 01/25/1977 | US4005365 Voltage comparator and indicating circuit |
| 01/25/1977 | US4005363 Range resolving ground line sensor |
| 01/25/1977 | US4005362 Electrical circuit continuity tester |
| 01/18/1977 | US4004227 Radio frequency interference (RFI) testing by the dual screen room technique |
| 01/18/1977 | US4004223 Audible resistance or voltage tester |
| 01/18/1977 | US4004222 Test system for semiconductor memory cell |
| 01/18/1977 | US4003815 Apparatus for measuring stray current electrolytic corrosion |
| 01/11/1977 | US4002974 Method and apparatus for testing circuits |
| 01/11/1977 | US4002973 Elevator testing system |
| 01/11/1977 | US4002972 Electric vehicle control analyzer |
| 01/11/1977 | US4002968 Ground fault detector for a two-wire power supply |
| 01/04/1977 | US4001818 Digital circuit failure detector |
| 01/04/1977 | US4001689 Device for indicating the direction of rotation of a body driven by a rotating electrical machine |
| 01/04/1977 | US4001686 Electronic circuit testing apparatus |
| 01/04/1977 | US4001675 Test set for measuring impedance and power dissipation of a crystal |
| 01/04/1977 | US4001674 Method of testing the voltage withstand ability of a high voltage d-c cable at a voltage higher than its normal operating voltage while carrying current |
| 01/04/1977 | US4001649 Temperature monitoring of semiconductors |
| 01/04/1977 | US4001553 Counter arrangement and associated test circuit for an electronic timing device |
| 12/28/1976 | US4000464 Arrangement for detecting ground leaks in the rotor circuit of a brushless synchronous machine excited by rotating rectifiers |
| 12/28/1976 | US4000453 Storage battery charging system with alternator output fault indicating circuit |
| 12/28/1976 | US3999866 Wafer test system with integrated calibration |
| 12/21/1976 | US3999127 Apparatus and method for automatically testing the generator and regulator of a motor vehicle |
| 12/21/1976 | US3999126 Test device for simultaneously displaying the level of logic signals in a plurality of circuits |
| 12/21/1976 | US3999104 Electronic safety circuits |
| 12/14/1976 | US3997888 Charge monitor for electric battery |
| 12/14/1976 | US3997834 State-of-charge indicator for zinc-mercuric oxide primary cells |
| 12/14/1976 | US3997831 Battery checker |
| 12/14/1976 | US3997798 Or pulse gaps whose duration is shorter than a given test period t(p) from a sequence of digital pulses present at the input end |
| 12/07/1976 | US3996612 Test code generator |
| 12/07/1976 | US3996517 Apparatus for wafer probing having surface level sensing |
| 12/07/1976 | US3996516 Apparatus and process for testing printed circuits |
| 12/07/1976 | US3996514 Circuit board contact resistance probe |
| 12/07/1976 | US3996512 Container for receiving an insulating or cooling medium for electrical apparatus to be tested for resistance to electrical breakdown |
| 12/07/1976 | US3996511 Electrical wire continuity testing gun |
| 11/30/1976 | US3995216 Technique for measuring surface states in metal-insulator-semiconductor structures |
| 11/30/1976 | US3995175 High impedance voltage probe |
| 11/23/1976 | US3993985 Indicator for the condition of a battery operating a timepiece |
| 11/23/1976 | US3993949 Method and apparatus for detecting non-parallel reed switch contacts |
| 11/23/1976 | US3993934 Integrated circuit structure having a plurality of separable circuits |
| 11/16/1976 | US3992663 Process and apparatus for locating short-circuits in multi-layer circuit boards |
| 11/16/1976 | US3992636 Digital input circuit with fault detection means |
| 11/16/1976 | US3991553 Low voltage battery indicator for a solid state watch |