Patents for G01R 29 - Arrangements for measuring or indicating electric quantities not covered by groups (11,937) |
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02/12/1997 | EP0758089A2 Direction sensor and distortion reduction control circuitry |
02/12/1997 | EP0757797A1 Method for monitoring lightning protection equipment |
02/11/1997 | US5602387 Method of protecting an RF receiver in a hostile electromagnetic environment |
02/06/1997 | WO1997004322A1 System and method for measuring the total electron content of the ionosphere |
02/06/1997 | CA2227226A1 System and method for measuring the total electron content of the ionosphere |
02/05/1997 | EP0757440A2 A time interval measurement system and a method applied therein |
02/04/1997 | US5600252 Device for injecting current at radio frequency into electric wiring |
02/04/1997 | US5600251 Surface electric potential sensor drive and induction noise cancellation circuit |
01/30/1997 | WO1997003505A1 Satellite communications system having user rf exposure monitoring and control |
01/29/1997 | EP0467997B1 Method and means for near field antenna monitoring |
01/28/1997 | US5598439 Method and apparatus for symbol clock phase recovery |
01/16/1997 | WO1997001885A1 Improved charge rate electrometer |
01/15/1997 | EP0753943A2 Satellite communications system having user RF exposure monitoring and control |
01/15/1997 | CN1140261A Ejection space electric field detecting method and apparatus |
01/14/1997 | US5594458 Comb generator, device and process for calibrating measurement sections |
01/14/1997 | US5594218 Anechoic chamber absorber and method |
01/14/1997 | CA2179224A1 Satellite communications system having user rf exposure monitoring and control |
01/09/1997 | WO1996034293A3 Process for monitoring a three-phase mains for a change in the tuning of the arc supression coil |
01/08/1997 | EP0752106A1 Method and apparatus for analyzing a waveform |
01/08/1997 | EP0441898B1 Optical sensing apparatus and method |
01/07/1997 | US5592390 Time based method for analyzing a waveform |
01/02/1997 | DE19617977A1 Wave analysis system for data of specific finite elements of EM wave |
12/31/1996 | US5590158 Method and apparatus for estimating PSK modulated signals |
12/31/1996 | US5589788 For receiving an input signal |
12/31/1996 | US5589773 System and method for making electromagnetic measurements using a tiltable transverse electromagnetic cell and a fixed tilt sample holder |
12/27/1996 | EP0519017B1 Method and apparatus for calibration in a high speed rf measurement receiver |
12/24/1996 | US5587917 Data collection and processing for digital AC power system monitor/analyzer |
12/19/1996 | WO1996041319A1 Self-excited microelectromechanical device |
12/19/1996 | WO1996041203A1 Electromagnetic noise detector for implantable medical devices |
12/19/1996 | DE19623688A1 Electromagnetic field strength calculator for electric circuit |
12/19/1996 | CA2219310A1 Electromagnetic noise detector for implantable medical devices |
12/18/1996 | EP0749210A2 Counting circuit for measuring pulse spacing, sampling circuit, skew adjusting circuit, and logic analyzing circuit |
12/17/1996 | US5585730 Apparatus for measuring surface charge on a sheet or web |
12/12/1996 | DE19521002A1 Detection of harmful electrical and=or magnetic fields |
12/12/1996 | DE19520781A1 Wave guide detector with integrated HF antenna element feeding detector diode |
12/11/1996 | EP0747714A2 Noise measurement test system |
12/10/1996 | US5583637 Optical electric field sensor using optical component having electrooptical effect |
12/04/1996 | EP0745863A1 Electronic discharge detector for electrical apparatus |
12/04/1996 | EP0327545B1 Determination of particle size and electric charge |
12/03/1996 | US5581204 Pulse width measurement circuit |
12/03/1996 | CA2085528C Time constant detecting circuit and time constant adjusting circuit |
11/28/1996 | WO1996037786A1 A measuring system and a method for detecting static electricity and/or change thereof in a measuring object and use thereof |
11/13/1996 | EP0742649A2 Directional coupler arrangement for the measurement of power |
11/12/1996 | US5574981 Method and arrangement for measuring the condition of a receiver antenna |
11/12/1996 | US5574805 Electric field sensor |
11/12/1996 | US5573339 Active radiometer for self-calibrated furnace temperature measurements |
11/07/1996 | WO1996035103A1 A piezoelectric crystal microbalance device |
11/06/1996 | CN1135046A Partial-discharge measuring device |
11/05/1996 | US5572118 Charge rate electrometer including means for substantially eliminating leakage currents |
10/31/1996 | WO1996034293A2 Process for monitoring a three-phase mains for a change in the tuning of the arc supression coil |
10/31/1996 | DE19616772A1 Electromagnetic field strength calculation device |
10/30/1996 | EP0740073A1 Circuit for detecting an overvoltage on an electric load |
10/30/1996 | EP0740072A1 Method and circuit for detecting the presence of a spark in internal combustion engine |
10/29/1996 | US5570326 Device for measuring the duration of a time interval |
10/29/1996 | US5570031 Substrate surface potential measuring apparatus and plasma equipment |
10/29/1996 | US5570029 Cable crosstalk measurement system |
10/24/1996 | DE19529161C1 Measuring device for Ac voltages in human body |
10/22/1996 | US5568394 Interferometry with multipath nulling |
10/17/1996 | DE19513872A1 Motor vehicle multi-antenna testing method |
10/16/1996 | CN1133439A Monitoring and measuring system for transient parameter of multiplex high power discharge pulse |
10/15/1996 | US5565822 TEM waveguide arrangement |
10/09/1996 | EP0736776A2 Searching electromagnetic disturbing source |
10/08/1996 | US5563921 Jitter detection apparatus using double-PLL structure |
10/08/1996 | US5563517 Dual channel d.c. low noise measurement system and test methodology |
10/08/1996 | US5563409 Crosstalk measurement system and technique |
10/03/1996 | WO1996030774A1 Noise detecting and recording device |
10/02/1996 | EP0735374A2 Time counting circuit and counter circuit |
10/02/1996 | EP0679261B1 Method and apparatus for measuring partial discharges in cables |
10/02/1996 | CN1132577A Measurement of gain error in a base station receiver, and improvement in field strength measurement |
09/26/1996 | WO1996029789A1 Process for monitoring the quantisation quality in digital radio or television transmission systems |
09/19/1996 | WO1991008493A3 Method and device for comparing two variable analog signals |
09/19/1996 | DE19509117A1 Verfahren zur Überwachung der Übertragungsqualität digitalisierter Signale Method for monitoring the transmission quality of digitized signals |
09/18/1996 | CN1131278A Local discharge pulse sensor for coupled high voltage alive equipment |
09/17/1996 | US5557633 Integrated multi-port repeater having shared resources |
09/17/1996 | US5557215 Self-bias measuring method, apparatus thereof and electrostatic chucking apparatus |
09/17/1996 | US5557196 Jitter analyzer |
09/12/1996 | DE19512787A1 Location detector using synthetic aperture, for locating e.g. microwave interference source |
09/12/1996 | DE19507809A1 Safe determination of electromagnetic compatibility and interference |
09/10/1996 | US5555278 Semiconductor circuit having phase lock function |
09/10/1996 | US5555207 Electromagnetic field frequency and image magnetic forms quantum analyzer apparatus |
09/10/1996 | US5554173 Defibrillator charge tester |
09/06/1996 | WO1996027137A1 Method of determining the sense of rotation of a three-phase system |
09/04/1996 | EP0730160A2 Partial discharge measuring arrangement |
09/04/1996 | EP0730159A2 Electromagnetic radiation measuring apparatus |
09/03/1996 | US5552715 Apparatus for low cost electromagnetic field susceptibility testing |
09/02/1996 | CA2167260A1 Partial-discharge measuring device |
08/29/1996 | WO1996026448A1 Process and machine for signal waveform analysis |
08/29/1996 | DE19508769C1 Verfahren zur Bestimmung des Drehsinnes eines Drehstromnetzes und Schaltungsanordnung zur Durchführung des Verfahrens A method for determining the direction of rotation of a three-phase network and circuit arrangement for performing the method |
08/29/1996 | DE19506504A1 Open transverse electromagnetic waveguide with electrode and counter electrode arranged at angle, for EMC testing |
08/28/1996 | EP0728322A1 Microscopic electromagnetic radiation transmitter or detector |
08/20/1996 | US5548820 Antenna and feeder cable tester |
08/07/1996 | CN1128354A Electric field sensor capable of reliably measuring an electric field intensity of signal |
08/06/1996 | US5543779 EMI source detector |
08/06/1996 | US5543721 Method and device for extending the dynamic range in measurements c arried out with a directional coupler |
07/31/1996 | CN1128082A Electrical charge transfer apparatus |
07/31/1996 | CN1127889A A partial discharge sensing device, in particular for use in a gas-insulated apparatus, and partial discharge measuring system using such a sensing device |
07/30/1996 | US5541520 Filtering for electronic module test |
07/30/1996 | US5541501 Lightning and storm warning method and apparatus |
07/24/1996 | CN1127552A Method and apparatus for controlling the exposure to RF transmissions |
07/23/1996 | US5539321 Apparatus for measuring the crosstalk in a cable |