| 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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| 03/01/1989 | EP0305187A2 A digital frequency synthesiser |
| 03/01/1989 | EP0305148A1 Determining component orientation |
| 03/01/1989 | EP0304868A2 Multiple lead probe for integrated circuits in wafer form |
| 03/01/1989 | EP0304848A2 System for diagnosing defects in electronic assemblies |
| 03/01/1989 | EP0304632A2 A contacless technique for semiconductor wafer testing |
| 02/28/1989 | US4809341 Test method and apparatus for a reticle or mask pattern used in semiconductor device fabrication |
| 02/28/1989 | US4809308 Method and apparatus for performing automated circuit board solder quality inspections |
| 02/28/1989 | US4809221 Timing signal generator |
| 02/28/1989 | US4809196 Method for designating/sorting semiconductor wafers according to predicted oxygen precipitation behavior |
| 02/28/1989 | US4809123 Ground fault detector for high-voltage DC power supplies |
| 02/28/1989 | US4808975 Arrangement for checking and indicating the malfunction of a lamp in monitoring and switching systems |
| 02/28/1989 | US4808932 Rotor fault and location detector for induction motors |
| 02/28/1989 | US4808919 Adjustable device for measuring the characteristics of a microwave component |
| 02/28/1989 | US4808916 Power supply magnetic shunt for transmission line sensor module |
| 02/28/1989 | US4808915 Assembly of electronic components testable by a reciprocal quiescent testing technique |
| 02/28/1989 | US4808867 Detecting local overheating in liquid-cooled windings of electric machines |
| 02/28/1989 | US4808821 Spectrometer objective for electron beam mensuration techniques |
| 02/28/1989 | US4808816 LED and PIN diode characterization by producing a schematic profile of relative intensities |
| 02/23/1989 | WO1989001389A1 Registration of hole centres for cutting printed board samples |
| 02/23/1989 | DE3727224A1 Measuring arrangement for locating leakage defects in cables |
| 02/22/1989 | EP0303662A1 Dynamic system for testing an equipment |
| 02/22/1989 | EP0303633A1 Battery monitoring and condition indicator system for multi-battery pack. |
| 02/22/1989 | CN2033126U Detecting instrument for electrical equipments |
| 02/22/1989 | CN1031301A Battery-powered device |
| 02/22/1989 | CN1031300A Battery-powered device |
| 02/21/1989 | US4807229 Semiconductor device tester |
| 02/21/1989 | US4807161 Automatic test equipment |
| 02/21/1989 | US4807160 Method of testing rigged distributing cable for train monitor |
| 02/21/1989 | US4807159 Apparatus and method for controlling irradiation of an electron beam at a fixed position in an electron beam tester system |
| 02/21/1989 | US4807147 Sampling wave-form digitizer for dynamic testing of high speed data conversion components |
| 02/21/1989 | US4806925 Infrared signalling system for detecting a predetermined state of a high voltage device |
| 02/21/1989 | US4806881 Multi-channel modulated numerical frequency synthesizer |
| 02/21/1989 | US4806857 Apparatus for testing semiconductor devices |
| 02/21/1989 | US4806852 Automatic test system with enhanced performance of timing generators |
| 02/21/1989 | US4805779 Device for separation of integrated circuits |
| 02/15/1989 | EP0303293A2 Laser temperature modulation and detection method |
| 02/15/1989 | EP0303059A1 Diagnostic system for the control units of a motor vehicle |
| 02/15/1989 | CN2032726U Tester for isolator of electrostatic induction type ac electric transmission lines |
| 02/14/1989 | US4805063 Fault detector for detecting faults in a DC capacitor circuit |
| 02/14/1989 | US4804909 Atto-amperemeter |
| 02/14/1989 | US4804907 Conductor tracer with improved current regulating transmitter |
| 02/09/1989 | WO1989001169A1 Battery state of charge indicator |
| 02/09/1989 | WO1989001168A1 Apparatus for automatic testing of multiconductor cables by sequential analysis |
| 02/09/1989 | DE3821241A1 Circuit arrangement for continuous monitoring of the insulation level of a functioning electric motor and for isolating the electric motor from the high-voltage mains as a function of the insulation |
| 02/09/1989 | DE3725355A1 Voltage measurement using an electron probe, by measurement in the frequency band by means of an unmodulated primary beam |
| 02/08/1989 | EP0302747A2 Method for assessing insulation conditions |
| 02/08/1989 | EP0302241A2 Voltage measurement with an electron-probe without an external trigger signal |
| 02/08/1989 | CN2032328U Fault detector for dc low voltage curcuit |
| 02/08/1989 | CN2032327U Breakdown voltage test system for insulating oil |
| 02/08/1989 | CN2032326U Dc voltage-resist tester |
| 02/08/1989 | CN2032325U Automatic tour detector with dc earthing |
| 02/07/1989 | US4803594 Wave-shaped electrostatic discharge |
| 02/07/1989 | US4803563 Rotor-in-stator examination magnetic carriage and positioning apparatus |
| 02/07/1989 | US4803472 Phase signal detecting device |
| 02/07/1989 | US4803436 Method and apparatus for evaluating the condition of a gapless metal-oxide varistor lightning arrester used for protecting a distribution transformer |
| 02/07/1989 | US4803434 Test device for circuit breakers having electronic trip units |
| 02/07/1989 | US4803424 Short-wire bed-of-nails test fixture |
| 02/07/1989 | US4803423 Input circuit for a probe of a logic analyser and probe and logic analyser provided with such a circuit |
| 02/07/1989 | US4803422 Electrical monitoring of flip-chip hybridization |
| 02/07/1989 | US4803417 Vehicle battery discharging indicator |
| 02/07/1989 | US4803416 Storage battery control device |
| 02/07/1989 | US4803357 Method and arrangement for detecting secondary particles triggered on a specimen by a primary particle beam |
| 02/07/1989 | US4802414 Multiple-contact plug connection for electrically actuatable triggering media |
| 02/02/1989 | DE3724144A1 Arrangement for testing circuits which are integrated on a chip |
| 02/01/1989 | EP0301953A1 Apparatus for detecting overheating in an electric cable and process for using such an apparatus |
| 02/01/1989 | EP0301528A1 Monitoring and warning system for series fed runway visual aids |
| 02/01/1989 | EP0301442A2 Circuit for checking the leads to a switch or a sensor |
| 02/01/1989 | EP0301358A1 Process for measuring the resistance of winding in an ac- or polyphase machine |
| 02/01/1989 | EP0301256A2 Equipment for modulating the intensity of a corpuscular ray |
| 02/01/1989 | EP0301254A2 Measuring voltage with an electron probe by measuring in the frequency region with a modulated primary beam |
| 02/01/1989 | CN2031930U Digital type conductor-pairing device for electric cable |
| 01/31/1989 | US4802168 Test signal generating circuit |
| 01/31/1989 | US4802163 Test-facilitating circuit and testing method |
| 01/31/1989 | US4802162 Automatic protocol synthesizing system |
| 01/31/1989 | US4802133 Logic circuit |
| 01/31/1989 | US4801879 Electron beam testing of integrated circuits |
| 01/31/1989 | US4801878 In-circuit transistor beta test and method |
| 01/31/1989 | US4801877 Method and apparatus for testing dynamoelectric machine rotors |
| 01/31/1989 | US4801875 Integrated circuit with frequency dividing test function |
| 01/31/1989 | US4801871 Testing apparatus for semiconductor device |
| 01/31/1989 | US4801870 Weighted random pattern testing apparatus and method |
| 01/31/1989 | US4801869 Semiconductor defect monitor for diagnosing processing-induced defects |
| 01/31/1989 | US4801868 Circuit tracing apparatus and method |
| 01/31/1989 | US4801866 Electric circuit testing equipment |
| 01/31/1989 | US4801864 Tester for terminal post resistance for an energy storage element connected in an electrical circuit |
| 01/26/1989 | WO1989000767A1 Light detector and signal processing circuit |
| 01/26/1989 | WO1989000728A1 Integrated circuits |
| 01/26/1989 | DE3823928A1 Method and arrangement for the determination of geometric data in the electrical testing of printed circuit boards |
| 01/26/1989 | DE3723087A1 Polarity and continuity tester for four-wire data lines of a communication device |
| 01/26/1989 | DE3722715A1 Method for checking the fitting of capacitors to circuit boards |
| 01/25/1989 | EP0300864A2 Apparatus for the detection of integrated-circuit de-passivation |
| 01/25/1989 | EP0300856A1 Apparatus and arrangement for test and diagnostic assistance of a function fulfilled by an electronic system on board a motor vehicle, and process for carrying it out |
| 01/25/1989 | EP0300537A1 Battery-powered device |
| 01/25/1989 | EP0300516A2 Digital data processing system |
| 01/25/1989 | EP0300455A2 Programmable device and method of testing programmable device |
| 01/25/1989 | EP0300352A1 Test apparatus for digital echo cancellers |
| 01/25/1989 | CN2031533U Frequency-changing series resonant breakdown voltage testing device |
| 01/24/1989 | US4800564 High performance clock system error detection and fault isolation |
| 01/24/1989 | US4800509 Detection of high resistance faults in electrical power supply network |
| 01/24/1989 | US4800418 Integrated circuit with improved monitoring function by use of built-in elements |