| 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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| 04/03/1991 | CN1012286B Method and apparatus for detecting short-circuit between sheets of pile sheet cores |
| 04/03/1991 | CN1012285B Electric generator inspection system and motor controller |
| 04/03/1991 | CN1012284B System and method for identifying phase conductor |
| 04/03/1991 | CA2020323A1 Firing circuit with three crash sensors |
| 04/02/1991 | US5005173 Parallel module testing |
| 04/02/1991 | US5005129 Diagnosis system for a motor vehicle |
| 04/02/1991 | US5005007 Alarm device for marine tank |
| 04/02/1991 | US5004985 Method and apparatus for testing the response of a stress wave sensor |
| 04/02/1991 | US5004978 Method for regenerating in-circuit test sequences for circuit board components |
| 04/02/1991 | US5004973 Method and apparatus for maintaining electrically operating device temperatures |
| 04/02/1991 | US5004970 Device and a process for detecting current flow in a MOS transistor |
| 04/02/1991 | US5004934 Semiconductor integrated circuit and test method for characteristics |
| 04/02/1991 | CA1282461C Method and apparatus for detection of ac power failure conditions |
| 03/28/1991 | DE3930836A1 Locating faults in domestic electrical appliances - applying working voltages to functioning parts and modules and signals to diagnostic points for optical indication |
| 03/27/1991 | EP0419232A2 Field programmable printed circuit board |
| 03/27/1991 | EP0419105A2 Integrated circuit having an embedded digital signal processor |
| 03/27/1991 | EP0418790A1 Perfect coupling confirming mechanism for an electric connector |
| 03/27/1991 | EP0418678A2 Synthetic equivalent test circuit of circuit breaker |
| 03/27/1991 | EP0418665A1 Device for the detection and discrimination of functional faults in an electrical power supply circuit |
| 03/27/1991 | EP0418614A2 Method and apparatus for calibrating linear delay lines |
| 03/27/1991 | EP0418525A2 Device under test interface board and test electronic card interconnection in semiconductor test system |
| 03/27/1991 | EP0418521A2 Testable latch self checker |
| 03/27/1991 | EP0418477A2 Fine classification process for capacity diodes |
| 03/27/1991 | EP0418454A2 Sliding contact test apparatus |
| 03/27/1991 | EP0418321A1 Methods, systems and apparatus for detecting changes in variables. |
| 03/27/1991 | EP0250495B1 Process for automatically monitoring control devices |
| 03/27/1991 | CN1012218B Load state detecting apparatus of an induction motor |
| 03/26/1991 | US5003554 Apparatus for the automatic in-circuit testing of coder/decoder telecommunications circuits and method therefor |
| 03/26/1991 | US5003479 Diagnosis system for a motor vehicle |
| 03/26/1991 | US5003478 Diagnosis system for a motor vehicle |
| 03/26/1991 | US5003477 Diagnosis system for a motor vehicle |
| 03/26/1991 | US5003476 Diagnostic system for a motor vehicle |
| 03/26/1991 | US5003256 Clock skew measurement technique |
| 03/26/1991 | US5003253 Millimeter-wave active probe system |
| 03/26/1991 | US5003252 Apparatus and method for measuring power factor and torque on the output of variable frequency drives |
| 03/26/1991 | US5003251 Bar code reader for printed circuit board |
| 03/26/1991 | US5003249 Electrical power detection and indication device |
| 03/26/1991 | US5003194 Formatter circuit for generating short and variable pulse width |
| 03/26/1991 | US5003156 Dual configuration connector port for burn-in systems |
| 03/26/1991 | CA1282115C Battery package with battery condition indicator means |
| 03/21/1991 | DE4027049A1 Defining current paths through electric-electronic components - using soft magnetic layer located near component surface and contrast forming microscope to monitor magnetisation in component surface |
| 03/21/1991 | DE3930006A1 Measuring transistor parameters taking account of self heating effect - measuring temp. rise caused by effect and current and voltage for corresponding reduced ambient temp. |
| 03/21/1991 | CA2025757A1 Synthetic equivalent test circuit of circuit breaker |
| 03/21/1991 | CA2010532A1 Sliding contact test apparatus |
| 03/21/1991 | CA2005019A1 Bed of nails circuit board tester |
| 03/20/1991 | EP0418018A2 Compact specimen processing station |
| 03/20/1991 | EP0417905A2 System scan path architecture |
| 03/20/1991 | EP0417736A2 System for optically inspecting conditions of parts packaged on substrate |
| 03/20/1991 | EP0417575A2 Automatic battery tester with motor-driven carbon pile loading |
| 03/20/1991 | EP0417392A1 Output circuit for a potentiometer |
| 03/20/1991 | EP0258214B1 Device to control electrical consumers in powered vehicles |
| 03/20/1991 | CN2073591U Automatic relay protection measuring instrument by using single-slice microcomputer |
| 03/19/1991 | US5001714 Unpredictable fault detection using adaptive inference testing techniques |
| 03/19/1991 | US5001713 Event qualified testing architecture for integrated circuits |
| 03/19/1991 | US5001604 Embedded testing circuit and method for fabricating same |
| 03/19/1991 | US5001432 Ignition test probe |
| 03/19/1991 | US5001423 Dry interface thermal chuck temperature control system for semiconductor wafer testing |
| 03/19/1991 | US5001422 VLSI tester backplane |
| 03/19/1991 | CA1281775C Failure information processing in automatic memory tester |
| 03/13/1991 | EP0416569A2 Method and apparatus for line power monitoring for uninterruptible power supplies |
| 03/13/1991 | EP0416532A2 Semiconductor memory device associated with peripheral logic gates having a scan-path diagnostic mode of operation |
| 03/13/1991 | EP0416307A1 Coupling confirming mechanism for an electric connector |
| 03/13/1991 | EP0416171A2 Monitor display method in electric vehicle |
| 03/13/1991 | EP0416047A1 Testing of analogue circuits in semiconductor devices |
| 03/13/1991 | CN2073117U Voltage testing key sign |
| 03/13/1991 | CN1049914A Method and apparatus for radio frequency signal detection |
| 03/13/1991 | CN1049913A Electric power installation, electric power transmission / distribution unit and trip method thereof |
| 03/12/1991 | US4999775 Power apparatus for diagnosing air bag equipment |
| 03/12/1991 | US4999578 Function inspecting system |
| 03/12/1991 | US4999577 Method for contactless testing of conducting paths in a substrate using photon-assisted tunneling |
| 03/12/1991 | US4999576 A TOU watt-hour meter |
| 03/12/1991 | US4999574 Switchable automotive circuit test light |
| 03/12/1991 | CA1281395C Automatic circuit adjusting system and circuit adjusting tool therefor |
| 03/12/1991 | CA1281385C Timing generator |
| 03/11/1991 | CA2018447A1 Automatic battery tester with motor-driven carbon pile loading |
| 03/07/1991 | WO1991002986A1 Device for the operational electrical testing of wired areas, especially printed circuit boards |
| 03/07/1991 | DE3928645A1 Plug-in rapid tester for light bulb etc. - has mains plug at one end and exchangeable sleeves at other end to check continuity and provide illumination |
| 03/07/1991 | DE3928551A1 Short circuit detecting circuitry for three=phase machine - uses relays with resistors and filters to detect displacement voltages of third harmonic and fundamental frequency |
| 03/06/1991 | EP0415709A2 Hydraulic sensor for quench detection and location in superconductors |
| 03/06/1991 | EP0415621A2 Communication system for single point emergency lighting |
| 03/06/1991 | EP0415614A2 Method and apparatus for generating control signals |
| 03/06/1991 | EP0415439A2 Composite semiconductor device having function for overcurrent detection |
| 03/06/1991 | EP0415370A1 Power apparatus, power transmission/distribution unit, and tripping method therefor |
| 03/06/1991 | EP0415319A2 Improved method and apparatus for circuit board testing with controlled backdrive stress |
| 03/06/1991 | EP0415039A2 Electronic circuit for monitoring a final amplifier and its load |
| 03/06/1991 | EP0414795A1 Voltage controlling and indicating device. |
| 03/06/1991 | EP0223824B1 Voltage calibration in e-beam probe using optical flooding |
| 03/06/1991 | CN1049761A Method and apparatus for determining deterioration of electric power line |
| 03/05/1991 | US4998250 Method and apparatus for determining an internal state of an electronic component |
| 03/05/1991 | US4998070 Method and apparatus for testing a dielectric coating |
| 03/05/1991 | US4998067 Portable test apparatus for low current circuit breakers |
| 03/05/1991 | US4998059 Dual demodulating circuit tracer |
| 03/05/1991 | US4998026 Driver circuit for in-circuit overdrive/functional tester |
| 03/05/1991 | US4998025 Device for generating strobe pulses with a desired timing |
| 03/02/1991 | WO1991003741A1 System for detecting melt-adhesion of relay |
| 03/02/1991 | CA2039163A1 Fusion detecting system for relays |
| 03/01/1991 | WO1991003827A1 Microcomputer based electronic trip system for circuit breakers |
| 03/01/1991 | CA2024323A1 Hydraulic sensor for quench detection and location in superconductors |
| 03/01/1991 | CA2020090A1 Communication system for single point emergency lighting |
| 02/28/1991 | DE4026428A1 Arrangement for determining deteriorating properties of HV cable - uses sensors along cable enabling detection of maximum pulse amplitudes in null voltage signals |