Patents
Patents for G01R 29 - Arrangements for measuring or indicating electric quantities not covered by groups (11,937)
03/1998
03/05/1998DE19738541A1 Electronic timer, especially for differential pressure sensors
03/04/1998EP0827246A2 Switchgear assembly
03/03/1998US5724388 Digital signal modulation analysis device
03/03/1998US5724044 Electrically scanning microwave radiometer
03/03/1998US5724043 Variable frequency microwave tropopause sensor system and method
03/03/1998US5723982 Apparatus for analyzing thin film property
03/03/1998US5723975 Apparatus and method for converting a voltage waveform into an optical signal
02/1998
02/25/1998CN1174330A Circuit for detecting phase angle of three-phase alternating current
02/17/1998US5719502 ESD monitoring circuit and device
02/11/1998EP0823057A2 Process for monitoring a three-phase mains for a change in the tuning of the arc supression coil
02/10/1998US5717388 Method for long term monitoring of magnetic fields
02/04/1998CN1172262A Device for distinguishing interference radiation
02/03/1998US5714889 Method and device for indicating the direction of rotation of a three-phase system
01/1998
01/29/1998WO1998004062A1 Method and circuit for data regeneration of a data stream
01/28/1998EP0821242A2 An electromagnetic compatibility (EMC) test cell
01/28/1998EP0682821A4 Portable antenna test apparatus.
01/22/1998DE19629024A1 Imaging device for displaying electromagnetic radiation spatial distribution
01/21/1998EP0819946A2 Appliance for detecting noise radiation
01/21/1998EP0819945A1 Means for measuring the cut off duration of an electronic system
01/21/1998CN1170876A Evaluating device for high order harmonic wave flow
01/20/1998US5710977 Apparatus for measuring multipath propagation characteristics
01/15/1998WO1998001763A1 Process for standardising the intensity of optical sensors used for measuring periodically oscillating electric or magnetic field intensities
01/15/1998CA2260055A1 Process for standardising the intensity of optical sensors used for measuring periodically oscillating electric or magnetic field intensities
01/08/1998DE19626931A1 Testing electrical and/or electronic equipment for electromagnetic compatibility
01/08/1998DE19623649A1 Powder spray electrostatic charge detection device for coating gun
01/07/1998EP0816859A2 Process and system for the diagnosis of car antennas
01/07/1998EP0815660A1 Process for monitoring the quantisation quality in digital radio or television transmission systems
01/07/1998EP0711417B1 Method and apparatus for controlling the exposure to rf transmissions
01/06/1998US5706307 Method and arrangement for the determination of the ratio for common-channel or adjacent-channel interferers in digital mobile communication networks
01/06/1998US5706204 Apparatus for triggering alarms and waveform capture in an electric power system
01/06/1998US5706202 Frequency spectrum analyzing apparatus and transmitter characteristics measuring apparatus using the same
12/1997
12/30/1997US5703787 Wave analyzing apparatus and wave analyzing method
12/24/1997CN1168473A System and method of measuring electric field strength
12/23/1997US5701601 Receive signal level detection system
12/23/1997US5701082 Probe for sensing moculated signals and method of using same
12/17/1997EP0812426A1 Method of determining the sense of rotation of a three-phase system
12/17/1997EP0812425A1 Process and machine for signal waveform analysis
12/17/1997EP0681728A4 A system and method for compression and decompression of audio signals.
12/16/1997US5699461 Optical fiber sensors and method for making the same
12/16/1997US5699263 Testing device for warning the possibility of illegal intercept of image information from an electromagnetic emission of a computer system
12/16/1997US5698985 Cross-talk measurement instrument with source indication as a function of distance
12/16/1997US5698978 System and method for measuring electromagnetic radiation absorption
12/16/1997US5697958 Electromagnetic noise detector for implantable medical devices
12/09/1997US5696691 Self-adjusting statistical noise analyzer with interference suppression
12/09/1997US5696491 Self-excited microelectromechanical device
12/04/1997WO1997045747A1 Electro-optical and magneto-optical sensing apparatus and method for characterizing free-space electromagnetic radiation
12/03/1997EP0810445A1 Method for the screen effectiveness determination of a part of a shielded cable
12/03/1997CN1166750A Method and circuit to determine noise value that corresponds to noise in signal
12/02/1997US5694064 For receiving an input signal
12/02/1997US5694036 Direction sensor and distortion reduction control circuitry
11/1997
11/26/1997EP0809409A1 Method and circuit to determine a noise value that corresponds to the noise in a signal
11/25/1997US5692009 Jitter measuring method and apparatus
11/18/1997US5689812 Radio propagation simulation method
11/18/1997US5689539 Time interval measurement system and a method applied therein
11/18/1997US5689192 Method for simulating a controlled voltage for testing circuits for electromagnetic susceptibility
11/18/1997US5688348 Anechoic chamber absorber and method
11/13/1997WO1997037233A3 Field sensor and device and process for measuring electric and/or magnetic fields
11/06/1997WO1997041552A1 Method and apparatus for spectral analysis in a disk recording system
11/06/1997CA2225955A1 Method and apparatus for spectral analysis in a disk recording system
11/05/1997EP0805514A2 Self-phase up of array antennas with non-uniform element mutual coupling and arbitrary lattice orientation
11/05/1997EP0805510A2 Active array self calibration
11/05/1997EP0805509A2 Active phased array adjustment using transmit amplitude adjustment range measurements
11/05/1997EP0804740A1 Handheld vector network analyzer
10/1997
10/30/1997WO1997040547A1 Antennas in an rf distribution system
10/30/1997WO1997040392A1 Charge detector with long integration time
10/29/1997EP0803734A2 ESD sensor and method of use
10/28/1997US5682165 Active array self calibration
10/23/1997WO1997039360A2 Apparatus and method for measuring time intervals with very high resolution
10/22/1997EP0802425A2 Full aperture scene synthesis using rotating strip aperture image measurements
10/22/1997EP0802421A1 Microwave sensor
10/22/1997CN2265545Y Optical fibre arrangement for testing static electricity
10/21/1997US5680040 System for detecting incorrect phase rotation
10/16/1997WO1997038464A1 Apparatus and method to measure co-polarization and cross-polarization properties of an antenna
10/15/1997CN2264926Y Timing and warning watch
10/14/1997US5677637 Logic device using single electron coulomb blockade techniques
10/14/1997US5677606 Device and method for detecting unbalanced condition in a load driven by a motor
10/14/1997US5677501 Flow display type indicating method and apparatus
10/09/1997WO1997037233A2 Field sensor and device and process for measuring electric and/or magnetic fields
10/08/1997CN1161454A Probing device measuring intensity of field
10/08/1997CN1036096C Time constant detecting circuit and time constant adjusting circuit
10/02/1997WO1997036174A1 Apparatus and method for measuring static charge on toner
10/02/1997DE19612777A1 Field sensor with devices for measuring electrical and magnetic fields
10/01/1997EP0701752A4 A method and apparatus for determining signal usability
09/1997
09/30/1997US5673364 System and method for compression and decompression of audio signals
09/23/1997US5671164 Signal measurement method and signal measurement apparatus
09/23/1997US5670965 Compact antenna test range
09/23/1997US5670870 Electric field sensor capable of reliably measuring an electric field intensity of a signal
09/18/1997WO1997034159A1 A method and a device for space-charge measurement in cables using a pulsed electroacoustic method
09/18/1997WO1997034158A1 Electromagnetic compatibility testing
09/18/1997DE19651829A1 Voltage testing system for testing high voltage system parts above 1000 volt
09/17/1997CN1159586A Method of measuring delay time and random pulse train generating circuit used in such method
09/16/1997US5668562 Measurement-based method of optimizing the placement of antennas in a RF distribution system
09/10/1997CN1159278A Antenna and feeder cable tester
09/03/1997EP0793108A2 Apparatus for harmonic analysis of waveforms in an AC electrical system
09/03/1997EP0793107A2 Apparatus for triggering alarms and waveform capture in an electric power system
09/02/1997US5663991 Integrated circuit chip having built-in self measurement for PLL jitter and phase error
09/02/1997US5663731 Method and apparatus for time invariant pulse detection
08/1997
08/28/1997DE19631807C1 Determination of direction of field rotation in three-phase network
08/28/1997DE19606851A1 Protecting system equipped with electronic circuit against electromagnetic interference
08/28/1997DE19606512A1 System with coupling in unit for coupling in test signal at any position in object