Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286) |
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12/02/1992 | CN2123773U Multi-purpose testing pen |
12/01/1992 | US5168239 Method and apparatus for adjusting the threshold for determining the thickness of or the number of sheets in a sheet material |
11/30/1992 | CA2089392A1 Method and apparatus for simultaneous differential scanning calorimetry and microdielectrometry |
11/29/1992 | WO1992021983A1 Apparatus and methods for measuring the dielectric and geometric properties of materials |
11/29/1992 | CA2088240A1 Apparatus and methods for measuring the dielectric and geometric properties of materials |
11/26/1992 | DE4217108A1 Induktiver sensor Inductive sensor |
11/26/1992 | DE4116468A1 Inductive conductivity measurement cell, esp. for liquids - has conducting loop passed through transmission and reception coils for AC signals and resistances which can be switched into loop |
11/25/1992 | EP0515291A1 Signal conditioning circuit arrangement for digital insulation controller |
11/25/1992 | EP0514839A2 Circuit for measuring capacity |
11/25/1992 | CN2123081U High-voltage megohmmeter with anti-jamming performance |
11/24/1992 | US5165292 Device for measuring characteristic of a fluid |
11/22/1992 | CA2068952A1 Isolation monitoring and measuring device for an electrical power system with isolated neutral |
11/18/1992 | CN2122393U Static electricity grounding fault alarm |
11/18/1992 | CN1019147B Method of and circuit for ohmmeter calibration |
11/17/1992 | CA1310368C Circuit element measuring apparatus |
11/17/1992 | CA1310367C Electrochemically controlled superconductivity |
11/12/1992 | WO1992019939A1 Dynamic and contactless measurement of displacement or permittivity using a capacitive sensor |
11/12/1992 | WO1992019153A1 Method and apparatus for displaying multi-frequency bio-impedance |
11/11/1992 | CN2121695U Ground resistance admeasuring apparatus |
11/11/1992 | CN2121694U High-voltage megger with delayed short-circuit protection function |
11/11/1992 | CN1066121A Dynamic and non-contact measurement of displacement or of permittivity by use of capacitive sensor |
11/10/1992 | CA1310127C Potentiometer setting detection by measuring the ratio of rc time constants |
11/10/1992 | CA1310064C On-line web internal resistivity measuring apparatus |
11/09/1992 | WO1992020194A1 Signal quality monitoring system |
11/09/1992 | CA2102404A1 Signal quality monitoring system |
11/03/1992 | US5160893 Method of measuring semiconductor lead inductance by changing the dielectric constant surrounding the lead |
10/29/1992 | WO1992018856A1 Integratable conductivity measuring device |
10/28/1992 | EP0511137A1 Procedure and apparatus for measuring and monitoring the electrical isolation of an active system |
10/28/1992 | EP0511046A1 Device for estimating electromagnetic properties of a material at elevated temperatures |
10/27/1992 | US5159276 Capacitance measuring circuit and method for liquid leak detection by measuring charging time |
10/27/1992 | US5159274 Device and methods for measuring the quality of contact between two electrical conductors |
10/27/1992 | CA1309462C Method and apparatus for determining the rotor resistance of a rotating-field machine |
10/22/1992 | DE4113033A1 Integrierbare leitfaehigkeitsmessvorrichtung Integrable conductivity |
10/21/1992 | EP0509915A1 Process and appliance for measuring a capacitor |
10/21/1992 | EP0509731A2 Electrostatic sensor apparatus |
10/21/1992 | EP0509091A1 Automated breakout box for automotive testing |
10/21/1992 | EP0508992A1 Process and device for determining amplitude and phase values according to a reflectometric measurement process. |
10/20/1992 | US5157338 Measuring a voltage standing wave ratio of a signal |
10/20/1992 | US5157337 Dielectric constant measurement probe assembly and apparatus and method |
10/20/1992 | US5157332 Three-toroid electrodeless conductivity cell |
10/20/1992 | CA2066380A1 Material high temperature electromagnetic characteristic evaluating device |
10/15/1992 | WO1992017949A1 Process for finding the transmission properties of an electric line |
10/14/1992 | EP0449967A4 Device for automatically ascertaining capacitance, dissipation factor and insulation resistance of a plurality of capacitors |
10/13/1992 | US5155445 Vernier voltage-to-digital converter with a storage capacitance selectable in magnitude |
10/13/1992 | CA1308568C Transmitter with vernier measurement |
10/07/1992 | CN2118312U Auxiliary installation for pretesting q value of h-shape ferrite |
10/06/1992 | US5153525 Vehicle detector with series resonant oscillator drive |
10/01/1992 | DE4209761A1 Verfahren zum ermitteln der uebertragungseigenschaften eines elektrischen systems Method for determining the electric system of a uebertragungseigenschaften |
09/30/1992 | CN1064948A Multifunction insulating monitor |
09/30/1992 | CN1064947A Measurement circuit |
09/30/1992 | CN1018484B Ratimetric measurement circuit with improved noise rejection |
09/28/1992 | CA2106973A1 Process for finding the transmission properties of an electric line |
09/22/1992 | US5150063 Bridge for measuring the reflection coefficient |
09/22/1992 | US5150062 Electrostatic capacitance sensing circuit |
09/22/1992 | US5150057 Continuous monitoring system of the electrical conduction of a mains system |
09/16/1992 | EP0503272A1 Circuit arrangement for measuring the capacitance ratio of two capacitors |
09/16/1992 | CN2116224U Isolation monitoring and alarming apparatus |
09/16/1992 | CN2116223U Digital isolation resistance meter with automatically adjustable range |
09/15/1992 | US5148126 Capacitance sensor circuit and method for measuring capacitance and small changes in capacitance |
09/15/1992 | US5148125 Dielectric constant monitor |
09/15/1992 | US5148107 Inductive proximity switch means and method |
09/09/1992 | EP0502807A2 A method and a device for measuring the conductance of a fluid |
09/09/1992 | EP0354214B1 Process for determining the electrical duration of signal paths |
09/09/1992 | EP0332652B1 Method and apparatus for locating leaks in a multiple layer geomembrane |
09/08/1992 | US5146412 Method and means for sensing a change in capacitance by a computer |
09/08/1992 | US5146174 Switching arrangement method and apparatus for making parameter measurement and adjustment of coupled dual resonator crystals using both resonator ports |
09/03/1992 | WO1992015020A1 Instrument for measuring electrical resistance |
09/02/1992 | EP0501680A1 Signal conditioning circuit for trigger probe |
09/02/1992 | EP0263848B1 Capacitive chemical sensor for detecting certain analytes, including hydrocarbons in a liquid medium |
09/02/1992 | CN2114835U 电安测量仪 An electric meter |
09/02/1992 | CN2114834U Multimeter with megaohm range |
09/01/1992 | US5144252 Method and apparatus for transducer measurements on a metallic pair |
09/01/1992 | US5144250 Power amplifier time domain reflectometer |
08/26/1992 | CN1018027B Automatic dielectic-loss and capacitance measure instrument for power plants |
08/19/1992 | EP0499429A2 Superconductor quench measuring system |
08/18/1992 | US5140273 Electrode system to facilitate dielectric measurement of materials |
08/18/1992 | US5140272 Method of semiconductor surface measurment and an apparatus for realizing the same |
08/12/1992 | CA2060921A1 Superconductor quench measuring system |
08/11/1992 | US5138268 Thickness measuring system for nonconducting materials |
08/11/1992 | US5138264 Apparatus for measuring electrical conductivity |
08/06/1992 | DE4103200A1 Measurement transducer for physical parameters - has two sensors e.g. capacitive, inductive or resistor sensors, and changeover switch selecting on sensor at time for connection to evaluation circuit |
08/06/1992 | DE4102657A1 Operating inductive distance sensor |
08/06/1992 | DE4102655A1 Operating inductive distance sensor |
08/05/1992 | EP0496934A1 Method for using an inductive distance sensor |
08/05/1992 | EP0437532A4 Composition monitor and monitoring process using impedance measurements |
08/05/1992 | CN2112159U Dielectric loss angle and electric capacity meter with preventing strong electric field interference |
08/04/1992 | US5136262 Oscillator circuit and method for measuring capacitance and small changes in capacitance |
08/04/1992 | US5136252 Apparatus and methods for evaluating resistive bodies |
08/04/1992 | US5136251 Capacitance measurement |
08/04/1992 | US5136249 Probes for measurement of moisture content, solids contents, and electrical conductivity |
08/04/1992 | CA1306008C Current sensing |
07/31/1992 | CA2060345A1 Method of operating an inductive distance sensor |
07/30/1992 | DE4038160A1 Detecting mismatch on feed line between radio transmitter and aerial - using directional couplers and generating AC voltage corresp. to waves propagated in both directions |
07/29/1992 | EP0496254A1 Measuring device for electrical measuring of resistance and method therefore |
07/29/1992 | EP0496147A1 Method of precise measurement of small resistance values |
07/29/1992 | CN1017655B Inductor/capacitor quality factor and loss measurer |
07/28/1992 | US5134380 Icing detector and method |
07/28/1992 | US5134376 A solution specific conductivity meter and method for use |
07/22/1992 | CN1017553B Measurement of capacitance and parameters related thereto |
07/21/1992 | US5132631 Glass surface coating detector |