| 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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| 10/23/1990 | CA1275444C Hand held device for use in both testing electrical continuity and detecting voltage sources |
| 10/18/1990 | WO1990012400A1 Multi-state eeprom read and write circuits and techniques |
| 10/18/1990 | WO1990012326A1 Contact sensing for integrated circuit testing |
| 10/18/1990 | WO1990010242A3 Aircraft battery status monitor |
| 10/17/1990 | EP0392636A2 Integrated circuit |
| 10/17/1990 | EP0392367A2 Load state decision apparatus of servomotor |
| 10/17/1990 | EP0392035A1 Method for recording and mapping of time dependent potentials in microelectronic devices |
| 10/17/1990 | EP0226887B1 Method and circuit arrangement for testing integrated circuits |
| 10/17/1990 | CN2064068U Digital display metering installation for accumulator capacity |
| 10/17/1990 | CN2064067U Discharge recording device |
| 10/16/1990 | US4964074 In-circuit emulator |
| 10/16/1990 | US4964049 Diagnosis system for a motor vehicle |
| 10/16/1990 | US4963828 Picture quality testing method and apparatus for color cathode-ray tube |
| 10/16/1990 | US4963824 Diagnostics of a board containing a plurality of hybrid electronic components |
| 10/16/1990 | US4963752 Method for detecting missing circuit board components |
| 10/16/1990 | US4963500 Determining contaminants by measuring degradation of carrier lifetime |
| 10/16/1990 | US4963225 Depositing conductive material in opening of dielectric layer, depositing second dielectric layer, removing first layer so conductive material projects beyond it |
| 10/16/1990 | US4962660 Apparatus for impact testing for electric generator stator wedge tightness |
| 10/11/1990 | DE3919845C1 Circuit for determining operational characteristic of laser diode - includes sub-circuit consisting of switching-on and switching-off network |
| 10/11/1990 | DE3910925A1 Test instrument, particularly for digital communication networks and method for using it |
| 10/10/1990 | EP0391812A1 D.C. current network insulation monitoring system |
| 10/10/1990 | EP0391580A2 A solvent responsive signal-carrying device |
| 10/10/1990 | EP0391312A2 System for and method of determining cable characteristics |
| 10/10/1990 | EP0391242A2 Inspection method of the charging state of a rechargable closed battery |
| 10/10/1990 | EP0391181A2 Arrangement for detecting short circuit contacts in the rotor windings of electric motors |
| 10/10/1990 | EP0391106A1 Method for determining the remaining capacity of a lead acid battery and device using this method |
| 10/10/1990 | EP0332652A4 Method and apparatus for locating leaks in a multiple layer geomembrane |
| 10/10/1990 | CN2063649U Sound and flash wire tester |
| 10/10/1990 | CN1046045A Portable device for detecting partial electrical discharge in live voltage distribution cables and/or equipment |
| 10/09/1990 | US4962456 Diagnosis system for a motor vehicle |
| 10/09/1990 | US4962355 Thermal test chamber device |
| 10/09/1990 | US4962350 Load condition detecting and driving system |
| 10/09/1990 | US4962347 Flashlight with battery tester |
| 10/06/1990 | CA2013145A1 Insulation monitoring system of a direct current power supply system |
| 10/04/1990 | WO1990011630A1 Plug contact arrangement |
| 10/04/1990 | WO1990011533A2 Detecting cable faults |
| 10/04/1990 | WO1990011532A1 Monitoring electric cables |
| 10/04/1990 | WO1990011530A1 Measuring device with auxiliary electrode for a gas-insulated, encased high-voltage installation |
| 10/04/1990 | DE3920495C1 IC voltage measuring device for CMOS circuit - superimposes second part of beam on reflected beam to produce interference which represents voltage to be measured |
| 10/04/1990 | DE3917706C1 Parasitic capacity measurement method for FETs - has transistors periodically switched by suitable voltage and known capacity parallelly charged and discharged for comparison |
| 10/04/1990 | DE3910643A1 Method for testing the performance of small DC motors with permanent magnets in series production |
| 10/04/1990 | DE3910610A1 Device for measuring surface resistance |
| 10/04/1990 | DE3910507A1 Method and device for testing the time response of digital (switching) circuits |
| 10/03/1990 | EP0390675A2 Method and apparatus for acquiring data from intermittently failing circuits |
| 10/03/1990 | EP0390642A1 Probe card for testing hyperfrequency semiconductor components |
| 10/03/1990 | EP0390562A2 Driver circuit for providing pulses having clean edges |
| 10/03/1990 | EP0390080A1 Method of making a cable assembly |
| 10/03/1990 | EP0390034A2 Portable detector device for detecting partial electrical discharge in live voltage distribution cables and/or equipment |
| 10/03/1990 | EP0389865A2 Multi-layer printed circuit board |
| 10/03/1990 | EP0389683A2 Apparatus and method for regulating a measurement system |
| 10/03/1990 | CN1045864A On-spot tester for leakage protector |
| 10/03/1990 | CN1045863A Tester for leakage protector |
| 10/02/1990 | US4961191 Test circuit for logic circuits |
| 10/02/1990 | US4961159 Cellular automaton for generating random data |
| 10/02/1990 | US4961157 Method and apparatus for electrostatic discharge testing of machines which repetitively execute a stored program with a plurality of program steps |
| 10/02/1990 | US4961053 Circuit arrangement for testing integrated circuit components |
| 10/02/1990 | US4961052 Probing plate for wafer testing |
| 10/02/1990 | US4961051 Non-actuating relay driver tester |
| 10/02/1990 | US4961050 Test fixture for microstrip assemblies |
| 10/02/1990 | US4961043 Battery conditioning system having communication with battery parameter memory means in conjunction with battery conditioning |
| 10/02/1990 | US4961013 Apparatus for generation of scan control signals for initialization and diagnosis of circuitry in a computer |
| 10/02/1990 | US4961012 Semiconductor integrated circuit device responsive to clock signals having different amplitudes |
| 09/28/1990 | CA2013170A1 Electronic device including a plurality of unit circuits mounted on respective printed circuit boards |
| 09/26/1990 | EP0389397A2 Apparatus for opens/shorts testing of capacitively coupled networks in substrates using electron beams |
| 09/26/1990 | EP0389383A2 Circuit and procedure for detecting an electric current flow in a MOS-transistor |
| 09/26/1990 | EP0389312A2 System to verify conductor end connections to a connector and automatic connection installation using said system |
| 09/26/1990 | EP0389306A2 Procedure and inspecting an equipped printed circuit board, especially for inspecting the bonds on the board and apparatus for performing this procedure |
| 09/26/1990 | EP0388790A2 Method and apparatus for testing high pin count integrated circuits |
| 09/26/1990 | EP0388784A2 Method and apparatus for high speed integrated circuit testing |
| 09/26/1990 | EP0388523A2 Apparatus for displaying residual capacity of battery |
| 09/26/1990 | EP0388485A1 Test fixture for microwave circuits |
| 09/26/1990 | CN2062852U Universal tester of integrated circuits |
| 09/25/1990 | US4959832 Parallel pseudorandom pattern generator with varying phase shift |
| 09/25/1990 | US4959792 Harness integrity tester (hit) |
| 09/25/1990 | US4959609 Electrical connecting apparatus for an electrical or electronic testing unit |
| 09/24/1990 | CA2012887A1 Board for testing microwave semiconductor components |
| 09/22/1990 | CA2012570A1 Measuring equipment with an auxiliary electrode for a gas-insulated, enclosed high-voltage power station |
| 09/20/1990 | DE4007187A1 Integrierte halbleiterschaltungseinrichtung und betriebsverfahren dafuer Integrated semiconductor circuit device and operating method therefor |
| 09/20/1990 | DE3908903A1 Signalling core, and an electrical or optical cable having a signalling core, as well as a cable network made of cables having a signalling core |
| 09/20/1990 | CA2012407A1 Measuring mount for microwave components |
| 09/19/1990 | EP0388099A2 Battery monitoring |
| 09/19/1990 | EP0388077A2 Method of optimizing the execution speed of an interpreted test language |
| 09/19/1990 | EP0388001A2 Testing method and apparatus for an integrated circuit |
| 09/19/1990 | EP0387732A2 Testing device for connector |
| 09/19/1990 | EP0387450A2 Process for making an IC Socket |
| 09/19/1990 | EP0387443A1 Method and apparatus for testing operation of a memory device |
| 09/19/1990 | EP0387332A1 Apparatus for testing circuit boards |
| 09/19/1990 | CN2062459U Multi-purpose testing pen for electrician |
| 09/19/1990 | CN2062458U Ultrasonic wave transducer testing device |
| 09/19/1990 | CN2062456U Electric testing pen |
| 09/18/1990 | US4958309 Apparatus and method for changing frequencies |
| 09/18/1990 | US4958129 Prealigner probe |
| 09/18/1990 | US4958127 Method and apparatus for determining the state of charge of a battery |
| 09/18/1990 | US4957828 Emergency battery monitor |
| 09/12/1990 | EP0386804A2 Arrangement for measuring a quiescent current of an integrated monolithic digital circuit, integrated monolithic digital circuit provided with such an arrangement and testing apparatus provided with such an arrangement |
| 09/12/1990 | EP0386581A2 Device for optically detecting hold position of electronic component |
| 09/12/1990 | EP0386366A2 Detecting and limiting electrical ground faults within electrical devices |
| 09/12/1990 | EP0386210A1 Method of and apparatus for testing optical sensor based control apparatus |
| 09/12/1990 | EP0386012A1 Triggering circuit for a vehicle air bag. |
| 09/12/1990 | CN2062060U Circuit connection test pen |