Patents
Sitemap › G01 - Measuring; Testing › G01R - Measuring electric variables; Measuring magnetic variables › G01R 29 - Arrangements for measuring or indicating electric quantities not covered by groups
Patents for G01R 29 - Arrangements for measuring or indicating electric quantities not covered by groups (11,937)
07/1998
07/21/1998US5784466 Co-channel interference detector
07/21/1998US5784296 Method and apparatus for spectral analysis in a disk recording system
07/21/1998US5784285 Waveform analyzer
07/21/1998US5783951 Small current detector circuit and locator device using the same
07/16/1998DE19748859A1 Low frequency absorption method for anechoic HF test chamber
07/16/1998DE19701041A1 Method for measuring directivity pattern of vehicle radar antenna, etc.
07/16/1998CA2226092A1 Co-channel interference detector
07/15/1998EP0852729A1 Antenna pattern measurement method and device
07/15/1998EP0852728A1 Broadband tem-horn antenna
07/15/1998EP0852727A1 Dual polarization electromagnetic field simulator
07/14/1998US5781003 Electric field sensor
07/09/1998WO1998029848A1 Electromagnetic wave warning system
06/1998
06/30/1998US5773974 Portable electro-magnetic field detection and measurement apparatus for near-field test and measurements
06/30/1998US5773971 Three electrode AC detection
06/30/1998US5772445 Electrostatic meter
06/25/1998WO1998027644A1 Microwave active solid state cold/warm noise source
06/24/1998EP0849907A2 Phase measurement apparatus and method
06/24/1998EP0849798A1 Photoconductive detector
06/24/1998EP0849601A2 Device and procedure for determining the polarity sign of a phaseshift between two electrical signals
06/23/1998US5771443 Method and apparatus for measuring FM frequency deviation
06/23/1998US5771020 Lightning locating system
06/23/1998US5770855 Microscopic electromagnetic radiation transmitter or detector
06/18/1998DE19753657A1 Waveform quality measurement of signal converted to digital format
06/16/1998US5767693 Method and apparatus for measurement of mobile charges with a corona screen gun
06/16/1998US5767691 Probe-oxide-semiconductor method and apparatus for measuring oxide charge on a semiconductor wafer
06/16/1998US5767684 Method and apparatus for measuring partial discharges in cables
06/16/1998CA2051670C Conversion of delta 16-steroid to a delta 17 (20)-20-silyl ether
06/11/1998WO1998025322A1 Antenna adapter
06/11/1998WO1998025150A1 Method and apparatus for measuring the piezoelectric constant of a thin film type piezoelectric material
06/11/1998WO1998025016A1 Apparatus and method for sensing movement of fuel injector valve
06/10/1998EP0847153A2 Method and apparatus for measuring waveform quality of CDMA signal
06/10/1998EP0846954A1 Method and apparatus for measuring a piezoelectric constant of a thin film type piezoelectric material
06/04/1998CA2223539A1 Electromagnetic wave detector
06/03/1998EP0845846A1 Device for fault detection and measurement on electrical power lines
06/03/1998EP0845127A1 Apparatus for detecting presence of piezoelectric material
06/03/1998EP0845110A2 Lightning locating system
06/02/1998US5761241 Process and device for measuring the jitter of a digital signal
06/02/1998US5760735 Phase stationary test body
06/02/1998US5760544 Magnetron microwave generator with filament-life diagnostic circuit
05/1998
05/27/1998CN1182880A Method for testing and evaluating lightning strike and equipment thereof
05/26/1998US5757652 Electrical signal jitter and wander measurement system and method
05/26/1998US5757194 Automatic broadband electromagnetic generator
05/22/1998WO1998021818A1 Apparatus for tracking resonant frequency
05/22/1998CA2271479A1 Apparatus for tracking resonant frequency
05/20/1998EP0843420A2 Mobile station having drift-free pulsed power detection method and apparatus
05/20/1998EP0641444B1 Optical voltage and electric field sensor based on the pockels effect
05/20/1998DE19647830A1 Field sensor for measuring magnetic and/or electric fields
05/20/1998DE19639948C1 Optische Meßvorrichtung für elektrische Felder/Spannungen mit planarem Aufbau und optimierter Kleinsignalempfindlichkeit und insbesondere linearer Kennlinie An optical measuring device for electric fields / voltages with a planar structure and optimized small-signal sensitivity and in particular linear characteristic
05/20/1998DE19637357C1 Electronic module with electromagnetic interference protection device e.g for motor vehicle occupant protection system release/triggering circuit
05/19/1998US5754440 Apparatus for harmonic analysis of waveforms in an AC electrical system
05/19/1998US5754437 Phase measurement apparatus and method
05/19/1998US5754063 Method and apparatus to measure internal node timing
05/19/1998US5754056 Charge detector with long integration time
05/19/1998US5754054 Apparatus and method for determining the source and strength of electro-magnetic emissions
05/19/1998CA2086640C Electrical contact avoidance device
05/14/1998WO1998020369A1 Seismic activity predictor
05/14/1998WO1997039360A3 Apparatus and method for measuring time intervals with very high resolution
05/13/1998CN2281541Y Downward electric field instrument
05/12/1998US5751600 Method and apparatus for the analysis of electromagnetics
05/12/1998US5751132 Electric motor monitoring circuit
05/06/1998EP0839324A1 System and method for measuring the total electron content of the ionosphere
05/06/1998CN2280916Y Analogue thunder-lighting impaction voltage measuring instrument
05/05/1998US5749046 Signal level measuring apparatus for directing an antenna toward a satellite
05/05/1998US5748314 Correlation function measurement method and apparatus, and wave source image visualization method and apparatus based on correlation function measurement
05/05/1998US5748002 RF probe for montoring composition of substances
04/1998
04/28/1998US5745370 Electromagnetic field intensity calculating device
04/28/1998US5745016 Method for improving power measurement implemented with a directional coupler at low power levels
04/28/1998US5744969 Analog and mixed signal device tester
04/23/1998DE19745370A1 Determining incoming reception power=energy or other value of at least one signal
04/22/1998EP0837334A2 Procedure and apparatus for determining incident receiver power or energy of at least one signal
04/22/1998EP0752106A4 Method and apparatus for analyzing a waveform
04/22/1998CN2279615Y Comprehensive testing instrument for on-load tap changer of power transformer
04/21/1998US5742172 Scanning probe microscope and method for obtaining topographic image, surface potential image, and electrostatic capacitance distribution image
04/21/1998US5742166 Seismic activity predictor including a dielectric for receiving precursor seismic electromagnetic waveforms
04/16/1998WO1998016009A1 Charge measurement circuit
04/15/1998EP0835506A1 Method and apparatus for spectral analysis in a disk recording system
04/14/1998US5739695 Method for dynamically testing radio systems for the motor vehicle environment
04/14/1998US5738071 Apparatus and method for sensing movement of fuel injector valve
04/09/1998WO1998015161A1 Electromagnetic field shielding device
04/09/1998DE19639944A1 Optische Meßvorrichtung für elektrische Felder/Spannungen mit verringerter Temperaturabhängigkeit An optical measuring device for electric fields / voltages with reduced temperature dependence
04/08/1998EP0767916B1 High-impedance electro-optic transducer
04/08/1998CN1178616A Process for monitoring quantisation quality in digital data
04/07/1998US5737082 Method of electro-optical measurement for vector components of electric fields and an apparatus thereof
04/07/1998US5735254 Circuit for detecting an overvoltage on a switched inductive load
04/02/1998WO1998013698A1 Optical measuring device for electrical fields/voltages with planar structure
04/02/1998WO1998013697A1 Optical measuring device for electrical fields/voltages with reduced temperature-dependence
03/1998
03/31/1998US5734262 Matrix of switched antenna elements having a conductor pattern supported on individual insulators for measuring electromagnetic radiation
03/26/1998WO1998012567A1 Optical measuring device operating according to the pockels effect principle for electrical field strength/voltage measurement with minimum temperature-dependence
03/26/1998DE19638645A1 Nach dem Prinzip des Pockels-Effekt arbeitende optische Meßvorrichtung für elektrische Feldstärke-/Spannungsmessung mit minimaler Temperaturabhängigkeit According to the principle of the Pockels effect operating optical measuring device for electric field strength / voltage measurement with minimal temperature dependence
03/25/1998EP0830658A1 Self-excited microelectromechanical device
03/24/1998US5730165 Time domain capacitive field detector
03/18/1998EP0829014A1 A measuring system and a method for detecting static electricity and/or change thereof in a measuring object and use thereof
03/18/1998CN1176416A Time measurement device
03/17/1998US5729076 Surface acoustic wave device, equipment including the same with electric circuit connected thereto and measuring method of parameters thereof
03/17/1998US5728481 Spin interaction device
03/12/1998DE19636277A1 Electromagnetic field change detector for use by layman
03/11/1998EP0804740A4 Handheld vector network analyzer
03/10/1998US5726576 Microwave sensor for detecting a discharge occurring in an electrical apparatus
03/10/1998US5726575 Path for acquiring a voltage pulse, and a method and a system for measuring partial discharges and provided with such a path
03/10/1998US5726566 Apparatus for measuring an RF parameter
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