Patents
Patents for G01R 29 - Arrangements for measuring or indicating electric quantities not covered by groups (11,937)
07/1992
07/21/1992US5132627 Motionless scanner
07/21/1992US5132607 Electrical field strength sensing probe
07/07/1992US5128622 Multi-channel electrostatic sensor apparatus
07/07/1992US5128621 Device for measuring, at a plurality of points, the microwave field diffracted by an object
07/07/1992CA1304781C Apparatus for measuring, at several positions, the microwave field diffracted by an object
07/01/1992EP0492798A2 Method and circuit for eliminating time jitter
06/1992
06/25/1992WO1992010764A1 Apparatus and method for measuring lateral charge distribution on a moving web
06/23/1992US5125008 Method and apparatus for autoranging, quadrature signal generation, digital phase reference, and calibration in a high speed rf measurement receiver
06/23/1992US5123733 Method for measuring the spatial distribution of electromagnetic radiation intensity
06/17/1992CN2107660U Trigger pulse parameter mornitoring and alarm device for silicon-controlled controlling system
06/17/1992CN1017091B Detetor for electronically detecting defect of cause loss for electric-energy in d.c. transmission lines
06/16/1992US5122996 Real-time, uninterrupted time-interval to voltage converter
06/16/1992US5122978 Pulse width measurement technique
06/16/1992US5122694 Method and electrical circuit for eliminating time jitter caused by metastable conditions in asynchronous logic circuits
06/10/1992CN1016998B Method and device for measuring electric field distribution of semiconductor laser in working order
06/09/1992US5121413 Digital pulse processor for determining leading and trailing time-of-arrival
06/09/1992US5121346 Difference comparison between two asynchronous pointers and a programmable value
06/09/1992US5121124 Microwave camera
06/09/1992US5121012 Circuit for measuring elapsed time between two events
06/09/1992CA1303231C Programmable input/output circuit
06/09/1992CA1303224C Simultaneous-delay correlator apparatus
06/03/1992CN2106375U Coil turn number testing device
06/02/1992US5119131 Method of creating tri-level images
06/02/1992US5119105 M&A for performing near field measurements on a dish antenna and for utilizing said measurements to realign dish panels
06/02/1992US5119030 Apparatus for electrically inspecting the surface of a drum
06/02/1992US5119018 Spectrum analyzer having functions for simultaneously executing plural kinds of detections and displaying resultants thereof
06/02/1992US5118966 Detection voltage output circuit of charge generation type sensing device
06/02/1992CA1302569C Method and apparatus for precisely measuring relative velocity in an iterferometric radiometer
06/02/1992CA1302522C Level determining circuit generating output signal at first or second terminal according to level of input signal
06/02/1992CA1302500C Instrument to measure the errors of apparent power meters
05/1992
05/26/1992US5117192 Control circuitry for quartz crystal deposition monitor
05/19/1992US5113864 Electric field and temperature probe
05/05/1992US5111135 Method for optically measuring electric field and optical voltage/electric-field sensor
05/05/1992US5110216 Fiberoptic techniques for measuring the magnitude of local microwave fields and power
05/05/1992US5109595 Method of making a fiberoptic sensor of a microwave field
04/1992
04/29/1992EP0482271A1 Current-to-voltage converter with low noise, wide bandwidth and high dynamic range
04/28/1992US5109189 Single crystal electro-optic sensor with three-axis measurement capability
04/28/1992CA1299774C Phase shifted feedback electrometer for pulsed ion chamber
04/28/1992CA1299661C Apparatus for measuring the intermodulation products in a receiver system
04/25/1992WO1992008143A1 Electric arc and radio frequency spectrum detection
04/22/1992EP0481751A2 Pipeline circuitry for allowing the comparison of the relative difference between two asynchronous pointers and a programmable value
04/15/1992EP0480726A2 Pulse analysis system and method
04/15/1992EP0480596A2 Circuit and method for determining the duration of the time interval between two signals
04/15/1992CN1016287B Method for rapid measurement of phase resistance of delta winding
04/13/1992CA2050500A1 Pulse analysis system and method
04/09/1992DE4030574A1 Load current monitoring circuitry - uses keying ratio monitoring circuit registering actual current supplied by voltage via control or regulating circuit
04/08/1992EP0478966A2 Digital phase match discriminator for three-phase power
04/08/1992CN2101251U Portable transformer ratio bridge
04/08/1992CN1016217B Generator circuit
04/03/1992CA2033375A1 Near field antenna measurement systems and methods
04/01/1992EP0478424A1 Method and device to measure the integrity of a transmission
04/01/1992CN2100634U Extra-corporal testing instrument for implanted pacemaker
04/01/1992CN2100631U Multi-functional current or voltage measuring instrument
03/1992
03/31/1992US5101506 Frequency calibration standard using a wide band phase modulator
03/31/1992US5101190 Polytetrafluoroethylene
03/31/1992US5101159 Electrostatic pin hole detector
03/27/1992CA2051881A1 Method and device for measuring the integrity of a transmission
03/25/1992EP0477087A1 Device for processing a signal originating from a sensor having a differentiating response
03/25/1992EP0441898A4 Optical sensing apparatus and method
03/22/1992CA2051882A1 Device for processing the output signal of a derivative type response sensor
03/18/1992CN1059602A Chopper test table for underground railways
03/17/1992US5097208 Apparatus and method for measuring gate delays in integrated circuit wafers
03/10/1992CA1296923C Measurement circuit
03/05/1992WO1992003744A1 Method and device for supervising the condition of a receiving antenna
03/04/1992EP0473282A2 Method for measuring modulation accuracy
02/1992
02/25/1992US5091917 Method and apparatus for pulse sorting
02/19/1992EP0471476A1 Radio receiver
02/19/1992EP0471431A2 Electrostatic discharge detector
02/19/1992EP0471119A1 Waveform measurement
02/11/1992US5087808 Combined optical power and noise meter
02/11/1992CA1295655C Nondestructive readout of a latent electrostatic image formed on an insulating material
01/1992
01/29/1992EP0467997A1 Method and means for near field antenna monitoring.
01/29/1992CN1058275A Trap charge relaxation spectra method and its measuring system
01/22/1992CN2094068U Combined phase-sequence indicator
01/21/1992US5083282 Transition state detecting device and measuring device using the same
01/14/1992US5081460 Method and apparatus for testing phase shifter modules of a phased array antenna
01/09/1992DE4013861A1 Correcting method for level indicator of antenna measurement device - by measuring signal of known level at defined frequencies and using linear interpolation
01/08/1992EP0464911A2 Radio receiver with acoustic signal
01/08/1992EP0464445A1 Apparatus for measuring the multipactor effect via phase noise
01/08/1992EP0464391A1 Measuring device and method for putting it into operation
01/07/1992US5079037 Resistive films comprising resistive short fibers in insulating film forming binder
01/07/1992CA1294011C Programmable comparator outlet filter
01/02/1992EP0463907A1 Electromagnetic wave detector
01/02/1992EP0371101A4 Electric field and temperature probe
01/02/1992DE4113431A1 Locating extreme value in level of antenna output signal - by shifting window smaller than region in which level changes and displaying level on LED indicator
12/1991
12/26/1991WO1991019990A1 Device for measuring, at a plurality of points on a surface, a microwave field radiated by a source
12/24/1991US5075542 Photoelectric switch using pulse width discrimination
12/23/1991CA2045046A1 Device using phase noise to measure the multipactor effect
12/12/1991WO1991019204A1 Method for measuring the characteristics of a strip material and device for implementing same
12/12/1991DE4018378A1 Measuring interference level of received signals e.g. TV - deriving measurement signal dependent on interference by subtracting function of useful signal from function of faulty signal
12/11/1991CN1056966A Circuit and method for monitoring voltage pulse widths
12/04/1991EP0459888A1 Method of automatic signal analysis by segmenting and classifying
12/04/1991EP0459694A2 Circuit and method for monitoring voltage pulse widths
12/03/1991CA1292804C Radiometric imager having a frenquency-dispersive linear array antenna
11/1991
11/30/1991CA2041325A1 Circuit and method for monitoring voltage pulse widths
11/28/1991WO1991018287A1 Pin hole detector
11/27/1991EP0458515A2 Method and apparatus for testing delta-sigma modulators
11/27/1991EP0458255A2 Polarimetric directional field sensor
11/27/1991EP0457788A1 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.
11/26/1991US5068657 Method and apparatus for testing delta-sigma modulators