| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 08/05/1992 | CN2112157U Dual-purpose test pencil |
| 08/05/1992 | CN1063363A Magnetooptic current angle comparison method and its installation |
| 08/04/1992 | USH1095 Cooled, temperature controlled electrometer |
| 08/04/1992 | US5136246 Apparatus with intermittent enabling means for detecting end of battery life |
| 08/04/1992 | US5136236 Arrangement for voltage measurement in a gis installation |
| 08/04/1992 | US5136184 Fast-acting current comparator |
| 08/04/1992 | CA1306046C Electromagnetic contactor with wide range overload current relay boardutilizing left shifting and method |
| 08/01/1992 | CA2054008A1 Tester for end of cell |
| 07/29/1992 | CN1017654B Voltage tester with segmental light indication and manufacturing method thereof |
| 07/28/1992 | US5134578 Digital signal processor for selectively performing cordic, division or square-rooting procedures |
| 07/28/1992 | US5134313 Peak hold circuit |
| 07/22/1992 | EP0495302A2 Integrated circuit with analog and digital portions and including thermal modeling |
| 07/22/1992 | CN1062978A Electronic voltage tester with two probes |
| 07/21/1992 | US5132609 Circuit for measuring the level of an electrical signal and including offset correction means, and application thereof to amplifiers having automatic gain control |
| 07/21/1992 | US5132608 Current measuring method and apparatus therefor |
| 07/15/1992 | EP0303633B1 Battery monitoring and condition indicator system for multi-battery pack |
| 07/15/1992 | CN2110233U Electrical eqiupment electricity leakage display siren |
| 07/14/1992 | US5130700 Electronic torque wrench and overshoot compensation circuit therefor |
| 07/14/1992 | US5130699 Digital battery capacity warning device |
| 07/14/1992 | US5130633 Circuit for detecting an excess-discharge of a battery |
| 07/14/1992 | US5130562 Integrated power-sense circuit |
| 07/08/1992 | EP0493906A1 Optical probing method and apparatus |
| 07/08/1992 | CN2109575U Test pen type motor vehicle electricity tester |
| 07/08/1992 | CN2109574U Dg-4 electronic electricity tester |
| 07/08/1992 | CN2109573U Wide measuring range small current pincerlike meter |
| 07/07/1992 | US5128616 DC voltage tester having parallel connected resistive elements in thermal contact with a thermochronic material |
| 07/07/1992 | US5128610 Current-to-frequency converter |
| 07/02/1992 | DE4030797C1 Heavy current measuring by shunt resistor - passes current over two-region resistor, with identical inductivity, but different resistance per region |
| 07/01/1992 | EP0493271A1 Measuring bridge for reference voltage for a device for monitoring and measuring the insulation of a DC electric network |
| 07/01/1992 | EP0492580A2 Fiber optic gyro |
| 07/01/1992 | EP0492453A2 Current level sensing circuit |
| 07/01/1992 | EP0492311A1 Device for sensing and identifying defects in an electrical power supply circuit |
| 07/01/1992 | CN2108986U Three-phase safety change-over switch |
| 07/01/1992 | CN2108934U Multipurpose duplex tube safety electricity tester |
| 07/01/1992 | CN2108485U Kitchen utensils with leakage of electricity alarm |
| 06/30/1992 | US5126661 Optical probing method and apparatus |
| 06/30/1992 | US5126660 Optical probing method and apparatus |
| 06/27/1992 | CA2058380A1 Reference voltage measuring bridge for a device for monitoring and measuring the insulation of a dc voltage electrical mains system |
| 06/25/1992 | DE4041845A1 Measuring circuitry for low currents esp. for automatic test system - has operational amplifier supplying analogue multiplexer connected to measuring input directly at inverting input and via relay at non-inverting input |
| 06/25/1992 | DE4041203A1 Detection and storing circuitry for extreme min. or max. value of input voltage - has transistor conducting if input voltage falls below storage capacitor voltage but blocking if its exceeds |
| 06/24/1992 | EP0491571A1 Machine for inspecting the wall thickness of glass containers |
| 06/24/1992 | CN2108307U Multipurpose measuring arrangement with screw driver |
| 06/24/1992 | CN2108306U Test pencil for lamp switching |
| 06/23/1992 | US5124635 Voltage imaging system using electro-optics |
| 06/20/1992 | CA2057950A1 Machine for inspecting the wall thickness of glass containers |
| 06/17/1992 | EP0490787A1 Protection circuit limiting overvoltages between selected limits and its monolithic integration |
| 06/17/1992 | CN2107661U Motive vehicle electric fault tester |
| 06/17/1992 | CN2107660U Trigger pulse parameter mornitoring and alarm device for silicon-controlled controlling system |
| 06/16/1992 | US5122760 Detector for automatic gain control amplifier circuit |
| 06/16/1992 | US5122751 Device for detecting residual capacity of a battery both in load and no load conditions |
| 06/11/1992 | DE4139854A1 Bipolar processing circuit showing polarity of signal to be measured - uses inverter and rectifier to give positive deflection on measuring display |
| 06/10/1992 | CN2107070U Earth wire with the electric testing fanction |
| 06/10/1992 | CN2107023U Power frequency parameter measuring apparatus |
| 06/09/1992 | US5121108 Circuit arrangement for monitoring two operating voltages |
| 06/09/1992 | US5121051 Method and apparatus for measuring small electrical signals |
| 06/09/1992 | CA1303126C Polarity indicator for vehicle battery |
| 06/02/1992 | US5119426 Linear array level meter displaying multiple audio characteristics |
| 06/02/1992 | US5119073 AC ripple meter |
| 06/02/1992 | CA1302522C Level determining circuit generating output signal at first or second terminal according to level of input signal |
| 05/27/1992 | EP0487403A1 Method of nuclear detection with base potential correction and corresponding device, notably a gamma camera |
| 05/27/1992 | EP0486985A2 Comparator |
| 05/27/1992 | DE4037115A1 Monitoring circuitry for electrical resistance esp. of heating resistance wire - has measuring resistor in series with heating element and voltage comparator |
| 05/27/1992 | CN2105693U Multi functional tester for indicating lamp |
| 05/27/1992 | CN2105692U Passive electronic liquid crystal display test pen |
| 05/27/1992 | CN2105691U Electronic testing pen with two detecting heads |
| 05/27/1992 | CN2105690U Wideband pulse current measurer |
| 05/27/1992 | CN1016819B Device for diagnosing electric power apparatus and method |
| 05/27/1992 | CN1016816B Dc current sensor |
| 05/27/1992 | CN1016815B Universal test and control module and its system |
| 05/26/1992 | US5117180 Method and apparatus for measuring RMS values |
| 05/26/1992 | US5115533 Toothbrush with voltage tester |
| 05/23/1992 | CA2056047A1 Smart multi-transducer device for electrical measurements |
| 05/21/1992 | DE4037052A1 Detector registering temporary change in current - has bistable magnetic core coupled to excitation, control and sensor coils |
| 05/20/1992 | EP0485969A2 Low-voltage detecting circuit |
| 05/20/1992 | CN2105076U Multipurpose low-valtage voltage testing implement with acoustooptic display |
| 05/19/1992 | US5115371 Circuit breaker comprising an electronic trip device |
| 05/19/1992 | US5115153 Differential stage comprising mesfets |
| 05/19/1992 | US5115151 Triple comparator circuit |
| 05/19/1992 | CA1301249C Integrated poly-phase power meter |
| 05/14/1992 | DE4035803A1 Evaluating analogue voltage signals for controlling IC engine of motor vehicle - using circuit contg. A=D converter, reference voltage source and computer |
| 05/14/1992 | DE4035673A1 Failure monitor e.g. for lambda sensors in exhaust pipes of V=engine - assigns series resistor of differing values to each current sensor and senses voltage drop over parallel circuit produced |
| 05/14/1992 | DE4034698A1 Voltage-frequency converter with comparator between integrator and output - has feedback contg. digital pulse generator controlled by quartz oscillator |
| 05/12/1992 | US5113336 Temperature compensated level detector |
| 05/12/1992 | US5113092 Differential voltage comparator |
| 05/12/1992 | US5113089 Current sensing circuit |
| 05/06/1992 | EP0484166A2 Fractional load current detector |
| 05/06/1992 | EP0483744A2 Current detection circuit of power semiconductor device and power converter using the circuit |
| 05/06/1992 | EP0425528A4 A real-time signal processing circuit |
| 05/05/1992 | US5111189 Fault indicator with timing control |
| 05/05/1992 | US5111148 Battery voltage discriminator circuit |
| 05/05/1992 | US5111136 Semiconductor circuit |
| 05/05/1992 | US5111071 Threshold detection circuit |
| 05/05/1992 | CA1300281C Substrate potential detecting circuit |
| 04/29/1992 | EP0482271A1 Current-to-voltage converter with low noise, wide bandwidth and high dynamic range |
| 04/29/1992 | CN2103148U Musical test pencil |
| 04/23/1992 | DE4033400A1 Current measuring arrangement for synchronously clocked power converter - safeguards transformer prim. current proportional voltage by Zener diode shorting switch closed in synchronism with clock |
| 04/22/1992 | EP0481328A2 Bidirectional current sensing for power MOSFETS |
| 04/22/1992 | CN2102564U Voltage indication cover board of thermal relay |
| 04/22/1992 | CN2102515U Multi-purpose dc low voltage test pen |
| 04/16/1992 | DE4037860C1 Method for monitor three insulation of three electrical supply lines - involves comparing individual assembles and parts of electrical installation lying opposed on each potential |