| 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) |
|---|
| 07/04/1978 | US4099227 Sensor circuit |
| 07/04/1978 | US4099215 Security apparatus for the protection of electric machines |
| 07/04/1978 | US4099119 Probe apparatus for in place testing of electrical circuit boards |
| 07/04/1978 | US4099117 Method and apparatus for measuring the quality of insulation on a buried pipeline and the quantity of metal oxide present at breaks in the insulation |
| 07/04/1978 | US4099103 Apparatus for controlling the rotors of synchronous motors |
| 06/27/1978 | US4097852 Fault detector for liquid immersed inductive apparatus |
| 06/27/1978 | US4097797 Apparatus for testing electrical circuit units such as printed circuit cards |
| 06/27/1978 | US4097795 Elastomer belt impregnated with carbon for testing dielectric adequacy and for indicating physical defects in a nonconducting material |
| 06/27/1978 | US4097794 Static means for detecting ground insulation failure for rotary electric machines |
| 06/27/1978 | US4097680 Spinning disk electrical isolator for a flowing seawater stream |
| 06/20/1978 | US4096348 Integrated test and assembly device |
| 06/13/1978 | US4095212 Remote electric state tester |
| 06/13/1978 | US4095175 Arc discharge lamp ballast tester |
| 06/13/1978 | US4095174 System for detecting leakage faults in a pipeline by measuring the distributed capacitance of sections of a sensing cable buried parallel to said pipeline |
| 06/13/1978 | US4095173 Method and system for corona source location by acoustic signal detection |
| 06/13/1978 | US4095172 Vehicle antenna tester |
| 06/13/1978 | US4094568 Electrical crossover and test connectors |
| 06/13/1978 | US4094320 Electrosurgical safety circuit and method of using same |
| 05/30/1978 | US4092724 Polar converter |
| 05/30/1978 | US4092589 High-speed testing circuit |
| 05/30/1978 | US4092587 Contact protection test set |
| 05/30/1978 | US4092584 Dwell measuring apparatus |
| 05/30/1978 | US4092522 5-Bit counter/shift register utilizing current mode logic |
| 05/30/1978 | US4091662 Apparatus for testing the performance of electric motors |
| 05/23/1978 | US4091325 Verification technique for checking wrapped wire electronic boards |
| 05/16/1978 | US4090225 Fail-safe circuit for tap-changing transformer regulating system |
| 05/16/1978 | US4090132 Measurement of excess carrier lifetime in semiconductor devices |
| 05/16/1978 | US4090126 Frequency marker generator |
| 05/09/1978 | US4088947 Electrical continuity test apparatus having a forward biased diode across the test terminals |
| 05/09/1978 | CA1031051A1 Electronic security circuit |
| 05/02/1978 | US4087747 Arrangement for testing electric samples with a plurality of probe contact points |
| 05/02/1978 | US4087745 Technique for contactless characterization of semiconducting material and device structures |
| 05/02/1978 | US4087046 Test apparatus |
| 04/25/1978 | US4086531 Electrical system test apparatus |
| 04/25/1978 | US4086530 Detection circuit for monitoring the failure of a system to respond in a planned manner to an inputted control signal |
| 04/25/1978 | US4086525 Circuit for preventing overdischarge of a battery |
| 04/25/1978 | US4086524 Charge monitor for electric battery |
| 04/18/1978 | US4084997 Apparatus for monitoring core charging of waterproof communication cable |
| 04/18/1978 | US4084428 Torque reaction motor performance evaluation |
| 04/11/1978 | US4084136 Eddy current nondestructive testing device for measuring variable characteristics of a sample utilizing Walsh functions |
| 04/04/1978 | US4083037 Detection circuit |
| 04/04/1978 | US4083001 Measurement of motor winding temperature |
| 04/04/1978 | US4082948 Generator monitoring apparatus |
| 04/04/1978 | US4082218 Potential failure detecting circuit having improved means for detecting transitions in short duration signals |
| 03/28/1978 | US4081801 Electronic measuring system with pulsed transducer |
| 03/28/1978 | US4081743 Cell discharge voltage monitor circuit for cell capacity grading and method for grading |
| 03/28/1978 | US4081022 Thermostat substitution circuit device |
| 03/21/1978 | US4080641 Ground fault detector |
| 03/21/1978 | US4080571 Apparatus for measuring the current-voltage characteristics of a TRAPATT diode |
| 03/21/1978 | US4080561 Method and apparatus for testing dielectric adequacy and for indicating physical defects in a nonconducting material |
| 03/21/1978 | US4080560 Method and apparatus for determining the maintenance and charge condition of lead storage batteries |
| 03/14/1978 | US4078510 Relating to the cathodic protection of structures |
| 02/21/1978 | US4075561 Programmable electrical apparatus containing a battery |
| 02/21/1978 | US4075557 Contactless facilities for determining the specific resistance of a test sample |
| 02/21/1978 | US4075556 Test fixture for miniature capacitors |
| 02/21/1978 | US4075549 Apparatus and method for testing electrical surge arresters |
| 02/21/1978 | US4074851 Method of level sensitive testing a functional logic system with embedded array |
| 02/14/1978 | US4074195 Semiconductor tester |
| 02/14/1978 | US4074189 Carrier with code |
| 02/14/1978 | US4074188 Low impedance fault detection system and method |
| 02/14/1978 | US4074187 Cable tester for multi-pair shielded cables |
| 02/14/1978 | US4074137 Heated ion chamber detector for a dynamoelectric machine |
| 02/07/1978 | US4072899 RF leak detector |
| 02/07/1978 | US4072897 Equivalent load-pull characterization of microwave transistors |
| 02/07/1978 | US4072895 Eddy current converter for non-destructive testing of electrically conducting coating in holes of printed circuit boards |
| 01/31/1978 | US4071902 Reduced overhead for clock testing in a level system scan design (LSSD) system |
| 01/31/1978 | US4071780 Transient generator |
| 01/24/1978 | US4070657 Current mode simultaneous dual-read/single-write memory device |
| 01/24/1978 | US4070646 Pulse error detector |
| 01/24/1978 | US4070624 Apparatus for testing starters and alternators |
| 01/24/1978 | US4070565 Programmable tester method and apparatus |
| 01/17/1978 | US4069453 Transistor test fixture |
| 01/03/1978 | US4067000 Remote control transmitter with an audible battery life indicator |
| 01/03/1978 | US4066953 Combination high impedance continuity and voltage indicating instrument |
| 01/03/1978 | US4066943 High speed precision chuck assembly |
| 01/03/1978 | US4066882 Digital stimulus generating and response measuring means |
| 12/27/1977 | US4065212 Inspection tool |
| 12/20/1977 | US4064454 Corona discharge detecting device |
| 12/13/1977 | US4063168 Method and apparatus for locating the source of corona discharge |
| 12/13/1977 | US4063166 Method for locating a fault on a line near to a measuring location with the aid of substitute signals |
| 12/13/1977 | US4063165 Apparatus for localization of a line fault by using traveling wave signals especially for locating faults both near and far from a measuring location |
| 12/13/1977 | US4063164 Method and apparatus for detection of short circuits by phase monitoring traveling wave signals |
| 12/13/1977 | US4063163 Apparatus for localization of a line fault through the use of predeterminably shiftable reference location |
| 12/13/1977 | US4063162 Process and apparatus for locating faults on a line through the use of travelling wave signals |
| 12/13/1977 | US4063161 Buried cable fault locator with earth potential indicator and pulse generator |
| 12/13/1977 | US4063160 Method and apparatus for locating a fault on a line by means of travelling wave signals |
| 12/13/1977 | US4063112 Induction motor load monitor and control apparatus |
| 12/13/1977 | US4063080 Method of propagation delay testing a level sensitive array logic system |
| 12/13/1977 | US4063078 Clock generation network for level sensitive logic system |
| 12/13/1977 | US4063027 Method of and apparatus for monitoring for electrode displacement in the Joule effect heating of heat softenable material |
| 12/13/1977 | US4062632 Constant modulation index technique for measuring the derivatives of device parameters |
| 12/13/1977 | US4062617 Electrical test connector apparatus |
| 12/06/1977 | US4061964 Armature operation-release testing apparatus |
| 12/06/1977 | US4061908 Method of and device for testing a digital memory |
| 12/06/1977 | US4061839 Warning device for indicating critical condition of starter batteries in vehicles |
| 11/29/1977 | US4060760 Eddy current sensor for non-destructive testing the quality of electrically conductive through-hole plating in printed circuit boards |
| 11/15/1977 | US4058804 Signal monitoring system |
| 11/15/1977 | US4058767 Apparatus and process for testing AC performance of LSI components |
| 11/15/1977 | US4058764 Combined pilot light and ground testing assembly |
| 11/15/1977 | US4058219 Method and apparatus for automatically testing reeled axial-lead electrical devices under environmental conditions |