| Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286) |
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| 04/08/1999 | DE19743712A1 Vector network analyzer calibration |
| 04/07/1999 | CN2313230Y Insulation discharging detecting instrument |
| 03/31/1999 | CN2312462Y Loop type resistance testing instrument |
| 03/30/1999 | US5889406 Inductance-change detection apparatus |
| 03/25/1999 | WO1999014922A1 Fast and noise-insensitive load status detection |
| 03/25/1999 | WO1998052135A3 Capacitive fingerprint sensor with adjustable gain |
| 03/24/1999 | EP0902895A1 Interferometric signal processing apparatus |
| 03/24/1999 | CN1211892A Apparatus and method for measuring voltage standing wave radio in antenna of base station |
| 03/23/1999 | US5886530 Test contact connection checking method and circuit |
| 03/23/1999 | US5886529 Impedance measuring device |
| 03/18/1999 | WO1999013348A1 Method and device for determining a capacitor ageing condition |
| 03/18/1999 | WO1999013347A1 Antenna tester |
| 03/18/1999 | WO1998054584A3 Two port handheld vector network analyzer with frequency monitor mode |
| 03/17/1999 | EP0646248B1 Method and device for supervising the condition of an antenna |
| 03/16/1999 | US5882938 Apparatus and method for evaluating contamination caused by organic substances deposited on substrate surface |
| 03/11/1999 | WO1999012024A1 Water content metering apparatus |
| 03/10/1999 | EP0901013A1 Water content metering apparatus |
| 03/10/1999 | CN1210388A Method for fabricating rotor and apparatus for testing coil of such rotor used therein |
| 03/09/1999 | US5881130 Fast and noise-insensitive load status detection |
| 03/09/1999 | US5880718 Capacitive touch detection |
| 03/04/1999 | DE19738050A1 Circuit to generate and evaluate measurement signal from position sensor in form of potentiometer |
| 03/03/1999 | EP0737412B1 Defective earth testing for an electric fence energizer |
| 02/25/1999 | WO1999009405A1 Pipe testing apparatus and method |
| 02/24/1999 | EP0898350A1 Circuit for detecting an earthed metallic element |
| 02/23/1999 | US5874832 Of a test specimen |
| 02/23/1999 | CA2174900C Method and apparatus for measuring the change in capacitance values in dual capacitors |
| 02/18/1999 | WO1999008121A1 Method for determining very low capacities and sensor designed therefor |
| 02/18/1999 | WO1998052286A3 Swept frequency device test |
| 02/18/1999 | DE19733352A1 Circuit for measuring equivalent derived currents, especially for test appliance connectable to earth |
| 02/17/1999 | CN1208468A Method and device for measuring the return loss of a radiofrequent signal |
| 02/16/1999 | US5872456 Apparatus for directly measuring component values within an RF circuit |
| 02/16/1999 | CA2041231C Dynamic monitoring without mobile or permittivity contact, using a capacitive sensor |
| 02/10/1999 | EP0811169A4 Continuous on-board analysis of diesel engine lubrication systems |
| 02/09/1999 | US5869973 Time-domain dielectric spectroscopy method and apparatus |
| 02/09/1999 | US5869958 Method of and apparatus for determining a response characteristic |
| 02/04/1999 | WO1999005533A2 System for measuring the alternating current equivalent series resistance of a conductor |
| 02/03/1999 | EP0894270A1 Method for measuring resistance of a load connected to a rotation transformer |
| 02/02/1999 | US5867030 Transmission path structure for measuring propagation delay time thereof |
| 02/02/1999 | US5867018 High accuracy four-terminal standard resistor for use in electrical metrology |
| 01/28/1999 | WO1999004275A1 Microwave reflectometer and method, and microwave oven equipped therewith |
| 01/28/1999 | DE19725611A1 Überwachungsverfahren und Überwachungsgerät für ein Kabel Monitoring method and monitoring device for a cable |
| 01/26/1999 | US5864259 Measuring line for a coaxial conductor for determining energy throughflow and standing wave ratios |
| 01/21/1999 | WO1999002999A1 Spreading resistance profiling system |
| 01/21/1999 | DE19831381A1 Electrical drive |
| 01/20/1999 | EP0892266A1 Transient electromagnetic inspection method and apparatus with moving sensors |
| 01/19/1999 | US5862144 Method for correcting a high frequency measurement error |
| 01/19/1999 | CA2164620C Method of predicting voltages in telephone line measurement |
| 01/13/1999 | CN2304130Y D. C. resistance detecting instrument |
| 01/13/1999 | CN2304129Y Universal photoelectric meter |
| 01/13/1999 | CN1204773A Method and apparatus for detecting out-of-step in electric power system |
| 01/12/1999 | US5859536 Moisture sensor having low sensitivity to conductance changes |
| 01/12/1999 | US5857379 Hair-care appliance with hair-moistness measurement by measuring the resistance of the hair, and circuit for converting the resistance value of a resistor into a measurement signal |
| 01/07/1999 | EP0889514A1 Method for determination of resistivity of N-type silicon epitaxial layer |
| 01/05/1999 | CA2106019C Method and apparatus for determining a difference in electrical conductivity of at least two fluids |
| 12/30/1998 | CN1203666A Process for producing signals identifying faulty loops in polyphase electrical power supply network |
| 12/29/1998 | US5854564 Direct sensor interface (DSI) module |
| 12/24/1998 | DE19726394A1 Method for detecting insulation weak points and faults in coils and coil systems |
| 12/23/1998 | WO1998058269A1 Method and device for monitoring a cable |
| 12/23/1998 | CN2301732Y Double measuring-double regulating bridge |
| 12/23/1998 | CN1202624A Method for measuring micro static capacity variation by using delay accumulation mode and its circuit |
| 12/23/1998 | CN1041373C Near-end communications line characteristic measuring systems |
| 12/22/1998 | US5852369 Thermal printer and resistance data measuring device for thermal head of the same |
| 12/17/1998 | WO1998043740A3 Improvements in thermal cycler for pcr |
| 12/16/1998 | EP0884596A2 Circuit board misalignment detection apparatus and method |
| 12/15/1998 | CA2137191C Instrument and method for testing local area network cables |
| 12/09/1998 | EP0882240A1 Microscopic imaging of properties of room-temperature objects |
| 12/09/1998 | EP0642672B1 Arrangement for measuring the condition of a receiver antenna |
| 12/08/1998 | US5848265 Circuit and method for measuring the difference frequency between two clocks |
| 12/03/1998 | WO1998054585A1 Miniature sensor for lubricant analysis |
| 12/03/1998 | WO1998054584A2 Two port handheld vector network analyzer with frequency monitor mode |
| 12/03/1998 | DE19719478A1 Method for detecting resistance increases in terminals in plug and socket assemblies |
| 12/02/1998 | EP0881500A1 Procedure for measuring the loop-impedance of an electric distribution network comprising a neutral conductor |
| 12/02/1998 | CN2299325Y Safety grounding resistence tester |
| 12/01/1998 | CA2068214C Biosensor electrode excitation circuit |
| 11/24/1998 | US5841274 Induced current absolute position transducer using a code-track-type scale and read head |
| 11/24/1998 | US5841164 Test structure for dielectric film evaluation |
| 11/24/1998 | US5841031 Method and apparatus for evaluation and inspection of composite-repaired structures |
| 11/24/1998 | CA2137982C Lan cable identifier for testing local area network cables |
| 11/24/1998 | CA2136403C Cable crosstalk measurement system |
| 11/19/1998 | WO1998052286A2 Swept frequency device test |
| 11/19/1998 | WO1998052283A1 Direct sensor interface (dsi) module |
| 11/19/1998 | WO1998052135A2 Capacitive fingerprint sensor with adjustable gain |
| 11/19/1998 | DE19753682A1 Interface circuit for capacitive sensor |
| 11/18/1998 | EP0878717A2 Circuit for measuring in-circuit resistance and current |
| 11/18/1998 | EP0877947A1 Method of calculating a resistance |
| 11/18/1998 | CN1199173A Circuit for measuring in-circuit resistance and current |
| 11/11/1998 | EP0877159A2 Process for checking the operability of the heater of a lambda sensor in the exhaust pipe of an internal combustion engine |
| 11/10/1998 | US5835327 ESD protection continuous monitoring device |
| 11/05/1998 | WO1998049520A1 Path/angle sensor |
| 11/05/1998 | WO1998048693A1 Method for measuring the electrical conduction of organic tissues |
| 11/05/1998 | DE19718024A1 Weg-/Winkelsensor Displacement / angle sensor |
| 11/05/1998 | DE19717136A1 Measuring ohmic armature resistances of coil windings of DC motor with commutator |
| 11/03/1998 | US5831440 SWR bridge configuration enabling extended precision and measurement range when measuring through a precision coax airline |
| 10/29/1998 | WO1998047948A1 Multifunctional polymeric tissue coatings |
| 10/29/1998 | DE19750648A1 Inductance alteration detection system for determining inductance alteration in coils |
| 10/28/1998 | EP0873813A1 Laser cutting machine and process for laser cutting |
| 10/28/1998 | EP0873522A1 Apparatus and method for electrical system measurement |
| 10/28/1998 | EP0873512A1 Method and apparatus for measuring an electrical parameter of a fluid |
| 10/27/1998 | US5826458 To measure moisture content of a water/fiber mixture in a stock |
| 10/21/1998 | EP0774125B1 Method of and apparatus for determining a response characteristic |