Patents
Patents for G01R 29 - Arrangements for measuring or indicating electric quantities not covered by groups (11,937)
12/1994
12/13/1994US5372898 Universal inexpensive battery state-of-charge indicator
12/08/1994WO1994028637A1 A method and apparatus for determining signal usability
12/06/1994US5371508 Portable antenna test apparatus
12/06/1994US5370841 Microwave leakage detector
12/01/1994DE4417591A1 Method and arrangement for determining absorption rate
11/1994
11/22/1994US5367200 Method and apparatus for measuring the duty cycle of a digital signal
11/17/1994EP0597027A4 Apparatus and method for controlling transmitted power of a modem.
11/16/1994CN1026616C 发送器 Transmitter
11/15/1994US5365241 Method and apparatus for performing planar near-field antenna measurement using bi-polar geometry
11/15/1994US5365238 Precision time measurements
11/15/1994US5365237 Microwave camera
11/08/1994US5363045 Hand-held non-contacting electric field detection tool
11/08/1994CA2004863C Method and device for excess modulation detection for signal analysis
11/02/1994EP0621952A1 Broadband antennas and electromagnetic field simulators
10/1994
10/26/1994CN1094165A Synchronous signals detecting sensor
10/25/1994US5359319 Electrostatic discharge detector and display
10/20/1994DE4413068A1 Device for recognising insulation deterioration
10/19/1994EP0620546A2 Energy detection procedure for noisy signals
10/19/1994EP0620443A1 Wide power range electromagnetic radiation detector
10/18/1994CA2014681C Electrooptic apparatus for the measurement of ultrashort electrical signals
10/11/1994US5355197 Method and apparatus for predicting the cycle-down behavior of a photoreceptor
10/11/1994US5355000 Assymetric quantum well infrared detector
10/11/1994CA1332450C Carrier-to-noise detector for digital transmission systems
09/1994
09/29/1994DE4409448A1 Integrierte Elektromotor-Hydropumpeneinheit mit Motordrehrichtungserkennung Integrated electric motor hydraulic pump unit with motor rotation direction detection
09/29/1994DE4406829A1 Pulse signal detector circuit
09/28/1994EP0617291A1 A method and an apparatus for detecting a frequency of a power system
09/27/1994US5350999 Measurement system and method for determining the amount of electromagnetic radiation energy being absorbed by living beings
09/21/1994EP0615659A1 Method for field monitoring of a phased array microwave landing system far field antenna pattern employing a near field correction technique.
09/21/1994EP0371990B1 Systems and methods for sensing position and movement
09/20/1994US5349303 Electrical charge transfer apparatus
09/14/1994EP0505391B1 Comb generator, device and process for the calibration of radiated-emission test sites
09/14/1994CN2177246Y Circuit type insulation monitoring device
09/14/1994CN1025930C Automatic electrooptic detector for field distribution
09/07/1994EP0335942B1 Microwave radiometer
09/07/1994CN1025891C Multifunction test pencil with simulated pointer liquid crystal display
09/01/1994DE4305703A1 Device for testing EMI (electromagnetic interference)
08/1994
08/30/1994US5341814 Method for measuring the temperature of a material by using microwave radiation
08/25/1994DE4305011A1 Pulse transit time measurement method
08/18/1994WO1994018718A1 Portable antenna test apparatus
08/17/1994EP0610918A2 Device for measuring the time of flight of electromagnetic waves
08/16/1994US5339135 Charged area (CAD) image loss control in a tri-level imaging apparatus
08/16/1994US5339026 Fiber-optic sensor with first and second bimode fibers
08/16/1994CA2028521C Electric field detector for a heatable windshield
08/09/1994US5337059 Apparatus and method for determining the aperture illumination of a phased-array antenna
08/09/1994US5337014 Phase noise measurements utilizing a frequency down conversion/multiplier, direct spectrum measurement technique
08/04/1994WO1994017423A1 System and method for maintaining uniform spacing of an electrode over the surface of an x-ray plate
08/04/1994CA2152798A1 System and method for maintaining uniform spacing of an electrode over the surface of an x-ray plate
08/03/1994CN2173407Y Multiple meter for automobile
07/1994
07/28/1994DE4301849A1 Producing coaxial electrical lines with equal signal transition times
07/27/1994EP0607305A1 Exposure meter for use with induction heat sealing of containers.
07/26/1994US5333162 High resolution time interval counter
07/21/1994WO1994016336A1 Method and arrangement for measuring the condition of a receiver antenna
07/21/1994WO1994016335A1 Arrangement for measuring the condition of a receiver antenna
07/21/1994DE4300778A1 Transverse em or TEM cell, esp. for investigating electromagnetic compatibility
07/20/1994CN2172479Y Speaking alarming safety helmet when one being close to electricity
07/20/1994CN1089726A Tester for transformer
07/12/1994US5329236 Apparatus for estimating charged and polarized states of functional groups in a solution
07/05/1994US5327091 For a device under test positioned in a reverberation chamber
06/1994
06/29/1994EP0301084B1 Apparatus and method for testing contact interruptions of circuit interconnection devices
06/29/1994CN2170619Y Diversion type dc electrostatic eliminator
06/29/1994CN2170530Y Electrostatic testing alarm for oil
06/28/1994US5325067 Apparatus for matching impedance in an electrostatic sensor
06/22/1994EP0602884A1 A device and method for measuring the jitter of a recovered clock signal
06/22/1994CN2169859Y High and low voltage phase measurer
06/22/1994CN2169858Y Anti-electroshock safety helmet
06/21/1994US5323337 Signal detector employing mean energy and variance of energy content comparison for noise detection
06/21/1994US5323115 Electrostatic voltmeter producing a low voltage output
06/16/1994CA2111452A1 Device and method for measuring the jitter of a recovered clock signal
06/14/1994CA1330227C Harmonimeter, and methods of utilizing and constructing same
06/08/1994EP0600143A1 Electromagnetic radiation monitor
06/07/1994US5319375 Segmented planar near-field antenna testing
06/01/1994EP0599763A1 Dual channel D.C. low noise measurement system and test methodology
06/01/1994EP0599648A1 Three-phase power analyzer
06/01/1994DE4239741A1 Electrical equipment stray radio field strength measuring method - measuring field strengths at critical frequencies previously determined by power measurements
05/1994
05/25/1994EP0598647A1 Semi-active electromagnetic sensors with distributed transfer function
05/25/1994CN2166462Y Multi-function digital coulometer
05/24/1994US5315255 Non-contact, electrostatic, discharge detector
05/24/1994US5315254 Method and apparatus for non-contact charge measurement
05/24/1994US5315233 Electromagnetic field analyzer for devices in which an electromagnetic field is present near a conductor and an electric charge moves in the electromagnetic field, and method of analyzing an electromagnetic field
05/24/1994US5315232 Electric field measuring system
05/24/1994US5314353 Test lead adapter
05/20/1994CA2103403A1 Distributed transfer function semi-active electromagnetic sensors
05/18/1994EP0597040A1 Method for detecting transient signals, particularly in acoustic signals
05/18/1994EP0597027A1 Apparatus and method for controlling transmitted power of a modem
05/18/1994CN2165453Y Integrated digital electrostatic potentiometer
05/17/1994US5313651 Satellite broadcast receiver
05/17/1994CA1329643C Instrument for measuring the phase jitter of analog signals
05/11/1994WO1994010579A1 Method and apparatus for measuring partial discharges in cables
05/11/1994CA2146991A1 Method and apparatus for measuring partial discharges in cables
05/10/1994US5311440 Methods and apparatus for correction of cable variations
05/10/1994US5311116 Multi-channel electromagnetically transparent voltage waveform monitor link
05/10/1994US5311066 Universal phase match path generator for three-phase power
05/10/1994CA2048049C Nonintrusive electro-optic field sensor
05/04/1994EP0595735A1 Sensor for a directional physical value
05/04/1994EP0457788B1 Process and device for monitoring the occurrence or spreading of fractures or cracks in materials, workpieces, component parts, structures or flying objects, in particular in earthquake-prone regions or movement of strata during tunnelling
05/03/1994US5309428 Token ring local area network testing apparatus for phase jitter testing
04/1994
04/28/1994DE4237140A1 Video camera for detection of electric fields, power, heat and press. distributions - contains CCD with pyroelectric film causing electric field distribution corresp. to local distribution of heat or heat generating radiation
04/26/1994US5307120 Method for measuring electrostatic potential
04/20/1994EP0592485A1 Method and device for extending the dynamic range in measurements carried out with a directional coupler
04/20/1994EP0360519B1 Timing measurement for jitter display