| Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286) |
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| 10/20/1998 | US5825669 Method of updating automatic calibration to provide a perceived perfect through connection |
| 10/20/1998 | US5825321 Digital-to-analog conversion system arranged to detect an output load |
| 10/20/1998 | US5825190 Method and apparatus for measuring a transfer impedance of shielded devices and common mode currents in shieldings |
| 10/13/1998 | US5819582 Slow wave time-domain reflectometer point level sensor |
| 10/08/1998 | WO1998043740A2 Improvements in thermal cycler for pcr |
| 10/08/1998 | DE19756100A1 Method of measuring impedance of circuit by generating test signal |
| 10/07/1998 | EP0869599A2 Method and apparatus for detecting out-of-step in electric power system |
| 10/07/1998 | CN1195260A Method for measuring standing wave ratio in mobile communication system |
| 10/06/1998 | US5818245 For measuring impedance of a power system test specimen |
| 10/06/1998 | US5818243 Meter for measuring a current |
| 10/06/1998 | US5818236 Method and apparatus for checking insulation of ungrounded power source |
| 10/06/1998 | US5817031 Impedance measuring device and a health management device using the same |
| 10/01/1998 | DE19705430C1 Verfahren zum Messen des Widerstandes einer an einem Drehübertrager angeschlossenen Last und Anordnung zur Durchführung des Verfahrens A method for measuring the resistance of a connected load at a rotary transformer and arrangement for performing the method |
| 09/30/1998 | CN1194365A Inductive current absolute position sensor by using code rail type staff and read out head |
| 09/29/1998 | US5815414 Electromagnetic field intensity calculating device |
| 09/24/1998 | DE19810551A1 Femtosecond visible light pulse method for measuring dielectric coefficient of non-linear crystal |
| 09/24/1998 | DE19724687C1 Method of determining losses in high frequency range using resonator |
| 09/24/1998 | CA2232963A1 Measuring method for detecting a short-circuit between the turns of a coil integrated on a chip, and integrated circuit structure adapted to such a measuring method |
| 09/22/1998 | US5811978 Diagnostic circuit for checking capacity of condenser |
| 09/16/1998 | EP0864873A1 Procedure for determining the grounding resistance and house wiring adapted for same |
| 09/16/1998 | EP0864096A2 Process for producing signals identifying faulty loops in a polyphase electrical power supply network |
| 09/08/1998 | US5804979 In a conductor |
| 09/03/1998 | DE19739532A1 Interface circuit for capacitance sensor e.g. pressure or acceleration sensor |
| 09/01/1998 | US5801953 Of optical and/or electrical signals |
| 09/01/1998 | US5801537 Method and apparatus for measuring in-place soil density and moisture content |
| 08/25/1998 | US5798648 Apparatus and method for inspecting an electrolytic capacitor in an inverter circuit containing transistor switching elements |
| 08/20/1998 | WO1998036285A1 Method for measuring resistance of a load connected to a rotation transformer |
| 08/20/1998 | DE19706527A1 Interference voltage error prevention method for earthing resistance measurement |
| 08/19/1998 | EP0859473A2 Method for efficient calculation of power sum cross-talk loss |
| 08/19/1998 | EP0859237A1 Method and device for monitoring at least one antenna-branch, in particular in a car |
| 08/19/1998 | CN2288453Y True effective value digital multimeter with functions of measuring inductance and capacitance |
| 08/18/1998 | US5797114 Method and apparatus for mapping of semiconductor materials |
| 08/11/1998 | US5794008 Electrical network modeling tool and analyzer |
| 08/11/1998 | US5793640 Computer-aided method |
| 08/11/1998 | US5793214 Electromagnetic inductive probe |
| 08/11/1998 | US5793213 Method and apparatus for calibrating a network analyzer |
| 08/06/1998 | WO1998034099A1 A diagnostic method and a device for its implementation |
| 08/06/1998 | WO1998024013A3 Material interface level sensing |
| 08/05/1998 | EP0856160A1 Arrangement for controlling a load connected to the secondary side of a transformer |
| 08/04/1998 | US5790479 Method for characterizing interconnect timing characteristics using reference ring oscillator circuit |
| 08/04/1998 | US5790107 Touch sensing method and apparatus |
| 08/04/1998 | US5790038 System for the remote measuring of the protection ground |
| 07/30/1998 | WO1998033044A1 Capacitative level detector with optimized electrode geometry |
| 07/30/1998 | DE19713267A1 Verfahren zur Bestimmung der Dielektrizitätskonstante und/oder der Leitfähigkeit mindestens eines Mediums sowie Vorrichtung zur Durchführung des Verfahrens A method for determining the dielectric constant and / or conductivity of at least one medium, and apparatus for carrying out the method |
| 07/29/1998 | EP0665952B1 Device and method for identifying and quantifying layered substances |
| 07/28/1998 | US5786705 Method for evaluating the effect of a barrier layer on electromigration for plug and non-plug interconnect systems |
| 07/28/1998 | CA2138184C Phase noise measurement system and method |
| 07/22/1998 | EP0756711B1 System for the remote measuring of the protection ground |
| 07/22/1998 | EP0587646B1 Method and apparatus for displaying multi-frequency bio-impedance |
| 07/22/1998 | EP0552275B1 Moisture and salinity sensor and method of use |
| 07/22/1998 | CN2286525Y Improved digital capacitance meter |
| 07/22/1998 | CN1188237A Method for live measuring medium loss of capacitive electric equipment and its device |
| 07/21/1998 | US5784299 Method for measuring electronic devices under test with a network analyzer |
| 07/16/1998 | WO1998030916A1 A diagnostic method and apparatus for detecting high electrical harness resistance |
| 07/16/1998 | DE19707511C1 Contact resistance measurement method e.g. for electrical and electronic modules conductor path and screen |
| 07/15/1998 | CN2286316Y Arrangement for charged measuring dielectric loss of capacitive electric appliances |
| 07/14/1998 | US5781018 Near-field resistivity microscope |
| 07/14/1998 | CA2124757C Aircraft communication headset tester |
| 07/08/1998 | EP0589974B1 A method and a system for testing capacitive acoustic transducers |
| 07/08/1998 | CN1186953A Method of and apparatus for ascertaining at least one characteristic of substance |
| 07/07/1998 | US5777482 Circuit arrangement and method for measuring a difference in capacitance between a first capacitance C1 and a second capacitance C2 |
| 07/02/1998 | WO1998028628A1 Process for testing the purity of the constituent material of an electrically conducting item |
| 07/02/1998 | DE19654740A1 Four pole analysis method with high bandwidth for frequencies to 50 GHz |
| 07/01/1998 | EP0850419A1 Near-field resistivity microscope |
| 07/01/1998 | CN1186411A Manufacture of printed circuit board with contacting area, and connecting method and use |
| 06/30/1998 | US5773985 One port complex transmission and group delay measurements |
| 06/24/1998 | CN1185585A Medium consumption automatic measuring instrument |
| 06/23/1998 | US5771147 Defective earth testing for an electric fence energizer |
| 06/18/1998 | WO1998026262A1 Method and apparatus for electronic compensation of erroneous readings caused by resonance in a capacitive pressure transducer |
| 06/16/1998 | US5767682 Electric conductivity measurement circuit and probe |
| 06/16/1998 | US5767672 Inductive proximity sensor for detecting magnetic and non-magnetic metallic objects |
| 06/10/1998 | EP0847138A2 Capacitive sensing device |
| 06/09/1998 | CA2145336C Electrical conductivity tester for ropes |
| 06/04/1998 | WO1998024013A2 Material interface level sensing |
| 06/04/1998 | WO1998023947A1 Grid sensor for determining the conductivity distribution in flow media and process for generating measurement signals |
| 06/03/1998 | EP0844946A2 System for checking the resistance of a load connected to a transformer |
| 06/03/1998 | EP0844945A2 System for controlling the resistance of a load connected to a transformer |
| 06/03/1998 | EP0844944A1 System for controlling the resistance of a load connected to a transformer |
| 06/03/1998 | CN2283263Y Multipurpose testing instrument for communication cable |
| 06/03/1998 | CN1183562A Palm-top digital capacitance/dielectric loss and inductance/quality factor parameter measurer |
| 06/02/1998 | US5760688 Body sensing device |
| 06/02/1998 | US5760589 Sheet thickness measuring system for measuring a thickness of various sheets fed into an image forming apparatus |
| 05/28/1998 | DE19750349A1 Electrical mains supply analyser for components or equipment |
| 05/28/1998 | DE19649011A1 Gittersensor zur Bestimmung der Leitfähigkeitsverteilung in strömenden Medien sowie Verfahren zur Gewinnung der Meßsignale Grating sensor for determining the conductivity distribution in flowing media, and methods for obtaining the measured signals |
| 05/28/1998 | DE19648643A1 Metal encapsulated gas insulated switchgear enclosure with earthing |
| 05/27/1998 | EP0844485A2 Arrangement for measuring condition of antenna in mobile telephone system |
| 05/27/1998 | CN2282689Y Transformer measurer |
| 05/27/1998 | CN2282676Y Primer meter |
| 05/26/1998 | US5757196 Capacitive switch actuated by changes in a sensor capacitance |
| 05/22/1998 | WO1998021598A1 Apparatus for measuring impedance of a resonant structure |
| 05/22/1998 | CA2272079A1 Apparatus for measuring impedance of a resonant structure |
| 05/13/1998 | EP0620920B1 Method for determining the short-circuit inductance of an asynchronous machine |
| 05/12/1998 | US5751154 capacitive sensor interface circuit |
| 05/12/1998 | US5751149 Method and apparatus for high frequency time domain reflectometry |
| 05/06/1998 | CN2280917Y Digital insulation resistance meter |
| 05/05/1998 | US5748000 Error correction method for transmission measurements in vector network analyzers |
| 05/05/1998 | US5747892 Galvanic isolator fault monitor |
| 04/28/1998 | US5744971 Device and apparatus for measuring dielectric properties of materials |
| 04/28/1998 | US5744970 Measuring apparatus and method of a permittivity of a dielectric material |
| 04/28/1998 | US5744964 Method and apparatus for electrical test of wiring patterns formed on a printed circuit board |