| Patents for G01R 15 - Details of measuring arrangements of the types provided for in groups , or (13,411) |
|---|
| 03/04/1993 | DE4128284A1 Sensor signal detection circuit - uses sync. demodulator for suppressing noise component inserted between sensor and trans-impedance amplifier |
| 03/03/1993 | EP0529339A1 Fibre optic sensor |
| 02/18/1993 | WO1993003528A1 Sensor device for a high-voltage line |
| 02/09/1993 | US5185684 Frequency selective arc detection |
| 02/09/1993 | US5185675 Electro optic modulator systems for fiber optic information transmission |
| 02/03/1993 | CN1068659A Economic run tester for electric motor |
| 01/28/1993 | DE4124679A1 High ohmic value resistor for high voltage divider having large frequency band - has bar of resistive material coaxially positioned within tube of ceramic material having high dielectric constant |
| 01/27/1993 | CN1068429A Digital meter |
| 01/26/1993 | US5182596 Device for measuring surface potentials at photosensitive body and electrostatic recording apparatus using said device |
| 01/26/1993 | US5182547 Neutral wire current monitoring for three-phase four-wire power distribution system |
| 01/26/1993 | CA1313224C Apparatus for recovering an alternating variable in a controlled semiconductor |
| 01/26/1993 | CA1313223C Electro-optic measurements of voltage waveforms on electrical conductors |
| 01/21/1993 | WO1993001502A1 Arrangement in a current detection circuit |
| 01/20/1993 | EP0523048A1 Fibre optic arrangement for measuring the strength of an electric current. |
| 01/19/1993 | US5181078 Fiber optic measuring device, rate gyro, navigation and stabilization system, and current sensor |
| 01/19/1993 | US5181026 Power transmission line monitoring system |
| 01/19/1993 | US5180970 Mechanically adjustable current sensor and method for making same |
| 01/13/1993 | EP0522303A2 Combined voltage and current transducer for a metal-encapsulated gas-insulated high-voltage installation |
| 01/13/1993 | CN1067968A Multifunctional portable electronic working box |
| 01/12/1993 | US5179565 Low noise pulsed light source utilizing laser diode and voltage detector device utilizing same low noise pulsed light source |
| 01/12/1993 | CA1312654C Mutual inductance current transducer, method of making, and electric energy meter incorporating same |
| 01/12/1993 | CA1312652C Wide dynamic range current measuring apparatus |
| 01/07/1993 | EP0521250A2 Current measuring transducer using a magnetic field sensor |
| 01/07/1993 | EP0521147A1 Current transformer |
| 01/07/1993 | EP0521146A1 Measuring converter at high-voltage potential |
| 01/07/1993 | EP0521125A1 High tension current transformer |
| 01/05/1993 | US5177433 Current-voltage transformer for electronic house-service meter |
| 12/23/1992 | EP0519804A1 Current sensor using a directional resonance magnetometer |
| 12/23/1992 | CN2125807U Digital automatic range changeable auget resistance tester |
| 12/22/1992 | CA1311801C Voltage measurement device for three-phase installations, especially of the shielded type |
| 12/16/1992 | CN2125144U Resonant clamp type amperemeter |
| 12/16/1992 | CN2125143U Improved simple digital multimeter |
| 12/16/1992 | CN1019526B Electrastatic dynamic potential measuring device |
| 12/15/1992 | US5172052 Current sensor assembly and method |
| 12/15/1992 | US5171981 Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection |
| 12/10/1992 | WO1992021949A1 Determination of induced change of polarization state of light |
| 12/09/1992 | EP0517147A2 Zero phase voltage measuring device |
| 12/09/1992 | EP0252085B1 Signal processing device with a level adapter circuit |
| 12/02/1992 | EP0516562A1 Device for measuring current with an optical fibre |
| 12/02/1992 | EP0516130A2 Circuit for measuring battery current |
| 12/02/1992 | CN1019348B Composite admittance device |
| 11/26/1992 | DE4115370A1 Fibre=optic sensor for alternating electric fields or voltages - has piezoelectric element with attached optical fibre carrying two coherent light modes, and also fibre length variation detector |
| 11/25/1992 | EP0514738A2 Multifunctinal testing- and measuring device for electrical power installations |
| 11/24/1992 | US5166600 Measuring device having an auxiliary electrode for a gas-insulated encased high-voltage conductor |
| 11/24/1992 | US5166599 Multimeter with at least three input connections and means for preventing errors due to the selection of an incorrect input connection |
| 11/17/1992 | US5164667 Voltage detecting device |
| 11/04/1992 | CN1065961A Dual slope integrating a/d converter |
| 11/04/1992 | CN1065959A 90 deg. phaseshift circuit for reactive power measurement |
| 10/29/1992 | DE4210526A1 Data transfer arrangement between measurement acquisition and processing units - has auxiliary unit mechanically joined to acquisition unit and coupled to it which passes data to processing unit |
| 10/28/1992 | EP0510427A2 Voltage transformer for a medium or high voltage installation |
| 10/28/1992 | EP0510426A2 Current transformer for medium or high tension |
| 10/28/1992 | EP0510376A1 Magnetic circuit for current sensor using compensation principle |
| 10/28/1992 | EP0510311A2 Current and voltage transformer for a metal encapsulated, gas insulated high-voltage installation |
| 10/27/1992 | US5159561 Zero-phase sequence current detector |
| 10/27/1992 | US5159319 Faulted circuit detector having an isolated indicator for an electrical transformer |
| 10/20/1992 | US5157324 Improved electro-optical crystal |
| 10/14/1992 | CN2118991U Digita universal meter |
| 10/13/1992 | US5155431 Very fast autoscale topology for digitizing oscilloscopes |
| 10/07/1992 | EP0507742A1 Optical sensor for electric current |
| 10/07/1992 | EP0507126A2 Input protecting mechanism for measuring device |
| 10/07/1992 | CN2118311U Division and composite body dual-purpose pliers shape galvanometer |
| 10/07/1992 | CN1018588B Method of updating scale factor of apparatus for measuring alternating electric current by means of faraday effect |
| 10/06/1992 | US5153667 Apparatus for detecting the change of light intensity |
| 10/06/1992 | US5153565 Fault indicator having electrostatically-actuated indicator flag |
| 10/06/1992 | US5153511 Test lead socket indicating device for a volt-ohm-milliameter |
| 10/06/1992 | US5153510 High impedance system for measuring voltage |
| 10/06/1992 | US5153427 Optical d.c. voltage transformer |
| 09/30/1992 | EP0506358A2 Sampling-type optical voltage detector |
| 09/30/1992 | EP0506357A2 Optical voltage detector |
| 09/30/1992 | EP0506223A2 Very fast autoscale topology for digitizing oscilloscopes |
| 09/30/1992 | EP0505826A1 Meter driving method |
| 09/29/1992 | US5151649 Pair of electrically shielded triaxial magnetic sensors for determination of electric currents in conductors in air with distance and angle compensation |
| 09/29/1992 | CA1308148C Circuit breaker having a direct current measuring shunt |
| 09/23/1992 | EP0505185A1 Optical sensor and method for producing the same |
| 09/23/1992 | EP0504674A2 Instrument transformer for electronic devices rapidly detecting short-circuits |
| 09/23/1992 | EP0504514A1 Multi-function, multi-mode switch for an instrument |
| 09/22/1992 | CA1307823C Electromagnetic contactor with lightweight wide range current transducer with sintered powdered metal core |
| 09/17/1992 | WO1992015895A1 Apparatus and methods for measuring magnetic fields and electric currents |
| 09/16/1992 | EP0503185A1 Multimeter having min/max time stamp |
| 09/11/1992 | EP0537144A4 Data encodement and reading method and apparatus. |
| 09/09/1992 | CN2115542U Analogue electronic technical test testboard |
| 09/08/1992 | US5146156 Current intensity transformer device for measuring a variable electric current |
| 09/03/1992 | WO1992015021A1 Voltage imaging system using electro-optics |
| 09/02/1992 | EP0501726A2 Magnetic-field measuring apparatus |
| 09/02/1992 | EP0501200A2 Compensation principle current sensor |
| 09/02/1992 | CN1064154A Test pencil with liquid crystal display of high/low voltage and manufacture thereof |
| 09/02/1992 | CN1064153A 电流测量装置 Current measuring means |
| 09/01/1992 | US5144227 Digital high-voltage meter for detecting a load to source voltage and a neutral position of a utility voltage regulator |
| 09/01/1992 | US5144154 Range changing using N and P channel FETS |
| 08/26/1992 | CN1018028B Method of and apparatus for determining ac calibration errors |
| 08/25/1992 | US5142221 Automatic function selecting multimeter |
| 08/19/1992 | EP0499589A1 Device for measuring currents |
| 08/19/1992 | CN2113494U Subminiature oscillograph |
| 08/19/1992 | CN1063608A No low-frequency distortion dc isolating tech. and circuit thereof |
| 08/18/1992 | US5140257 System for rating electric power transmission lines and equipment |
| 08/11/1992 | US5138252 Automatic scaling for display of modulation domain measurements |
| 08/06/1992 | WO1992013280A1 Methods and apparatus for measurements dependent on the faraday effect |
| 08/06/1992 | WO1992013279A1 High tension current transformer |
| 08/06/1992 | WO1992013278A1 Measuring converter at high-voltage potential |
| 08/06/1992 | WO1992013277A1 Current transformer |