| Patents for G01R 29 - Arrangements for measuring or indicating electric quantities not covered by groups (11,937) |
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| 05/24/1989 | EP0316635A1 Optical fibre voltage sensor |
| 05/24/1989 | EP0316619A1 Optical-fibre sensor |
| 05/23/1989 | US4833476 Electromagnetic field measuring technique to assess shielding effectiveness |
| 05/23/1989 | US4833403 Method and apparatus for measuring settling characteristics of a device under test by using a measurement system for measuring an input signal by sampling and digitizing said input signal |
| 05/23/1989 | US4833397 Tester for verification of pulse widths in a digital system |
| 05/23/1989 | US4833324 Nondestructive readout of a latent electrostatic image formed on an insulating material |
| 05/16/1989 | US4830020 Measurement signal interference elimination |
| 05/16/1989 | CA1254271A1 Synchronization detection circuit |
| 05/09/1989 | US4829521 Test circuit for detecting short duration pulses |
| 05/09/1989 | US4829238 Method and apparatus for monitoring electromagnetic emission levels |
| 05/09/1989 | CA1253918A1 Method and apparatus for testing electrical equipment |
| 05/03/1989 | EP0314301A2 Apparatus and method for measuring the signal-to-noise ratio |
| 05/02/1989 | US4827224 Phase shifted feedback electrometer for pulsed ion chamber |
| 04/25/1989 | US4825215 Radiometric imager having a frequency-dispersive linear array antenna |
| 04/25/1989 | US4825152 Transient field indicator |
| 04/25/1989 | US4825151 For coupling an aircraft controller to weapon system |
| 04/25/1989 | US4825149 Conformal ground referenced self-integrating electric field sensor |
| 04/19/1989 | EP0312296A2 Device and method for quantum nondemolition measurements using parametric oscillation |
| 04/18/1989 | US4823228 RF harmonic monitor for detecting potential lightning strikes by induced corona |
| 04/18/1989 | US4823132 Device for the simulation of radar targets in laboratory tests of radar seekers |
| 04/18/1989 | US4823115 Detection of lightning, storms and the like |
| 04/13/1989 | DE3832298A1 Method for measuring semiconductor surfaces |
| 04/12/1989 | EP0310762A1 Shielded cell for the generation of electromagnetic waves of the TEM type |
| 04/05/1989 | EP0310377A2 Programmable input/output circuit |
| 04/05/1989 | CN2035487U Pocket safety phase-sequence meter |
| 04/04/1989 | US4819080 Instrument for measuring the phase jitter of analog signals |
| 04/04/1989 | US4818072 Method for remotely detecting an electric field using a liquid crystal device |
| 03/29/1989 | EP0309350A1 Measuring device for the intermodulation products of a receiver system |
| 03/28/1989 | US4816666 Apparatus and methods for inspection of electrical materials and components |
| 03/28/1989 | US4816634 Method and apparatus for measuring strong microwave electric field strengths |
| 03/28/1989 | US4816285 Electrostatic field, measuring charge or current |
| 03/23/1989 | WO1989002696A1 Electrostatic charge control in vehicles |
| 03/21/1989 | US4815108 Signal detection apparatus |
| 03/21/1989 | US4814937 Defect detector circuit for inductive load driving circuit |
| 03/21/1989 | US4814772 Method and apparatus for precisely measuring relative velocity in an interferometric radiometer |
| 03/21/1989 | US4814713 Coaxial test fixture for determining shielding effectiveness of a device against interfering electromagnetic fields |
| 03/21/1989 | US4814695 Measurement method for an electrical signal, series-parallel negative-feedback measuring circuit, as well as use of the method of the measuring circuit for measuring voltage sources with very-high-ohmage internal impedances |
| 03/21/1989 | US4814694 System for detecting and processing abnormality in electromagnetic shielding of intelligent buildings |
| 03/21/1989 | US4813789 Calorimetric dosimeter |
| 03/15/1989 | EP0306552A1 Atto-amperemeter |
| 03/14/1989 | CA1251256A1 Nondestructive readout of a latent electrostatic image formed on an insulating material |
| 03/07/1989 | US4810961 Radio wave leakage diagnosing system for intelligent building |
| 03/07/1989 | US4810960 Measuring adjacent channel power |
| 03/07/1989 | US4810959 Method of improving signal-to-noise ratio of detected random pulses |
| 03/07/1989 | US4810101 Noise detection by sampling digital baseband signal at eye openings |
| 03/01/1989 | EP0181392B1 Interferometric radiometer |
| 02/28/1989 | US4809003 Almond test body |
| 02/23/1989 | WO1989001710A1 Microwave radiometer |
| 02/23/1989 | WO1989001633A1 Input signal determination system |
| 02/22/1989 | EP0303615A1 Measurement circuit. |
| 02/21/1989 | US4807035 Signal measurement |
| 02/21/1989 | US4806933 CW and pulse capable crystal video receiver |
| 02/21/1989 | US4806853 High accuracy frequency modulation waveform tester |
| 02/21/1989 | US4806845 System for measuring and generating electric noise |
| 02/14/1989 | US4804909 Atto-amperemeter |
| 02/09/1989 | WO1989001165A1 Logic probe |
| 02/07/1989 | US4803472 Phase signal detecting device |
| 02/07/1989 | US4803430 Magnetic/electric field measuring device by means of an electron beam |
| 02/01/1989 | CN1030732A Safety devices for elevator |
| 01/31/1989 | US4801861 Apparatus for measuring frequency modulation noise signals having a frequency response compensation circuit |
| 01/31/1989 | CA1249632A1 Polyphase electrical signal measuring apparatus |
| 01/24/1989 | US4800571 Timing jitter measurement display |
| 01/24/1989 | US4800387 Boresight chamber assembly apparatus |
| 01/24/1989 | US4800337 Method and means for determining a measure of the surface potential of a medium charged by means of a corona charging device |
| 01/17/1989 | US4799165 Level detecting waveform sampling system |
| 01/17/1989 | US4799024 Circuit arrangement to monitor the time spacing of signals |
| 01/12/1989 | WO1989000295A1 Systems and methods for sensing position and movement |
| 01/10/1989 | US4797636 Radio receiver |
| 01/10/1989 | US4797624 Method and apparatus for editing particle produced electrical pulses |
| 01/10/1989 | US4797620 High voltage electrostatic surface potential monitoring system using low voltage A.C. feedback |
| 01/10/1989 | CA1248621A1 Automatic, self-sustaining probe for measuring the work function |
| 01/03/1989 | US4795970 Electrical apparatus |
| 01/03/1989 | US4795963 Test method of A/D converter |
| 12/28/1988 | EP0296822A2 Carrier-to-noise detector for digital transmission systems |
| 12/28/1988 | EP0296595A2 Instrument for measuring the phase jitter of analog signals |
| 12/28/1988 | CN88103184A Midpoint detection technology and shortwave time-signal timing instrument |
| 12/27/1988 | US4794342 Intermediate frequency amplification circuit capable of detecting a field strength with low electric power |
| 12/19/1988 | EP0303615A4 Measurement circuit. |
| 12/13/1988 | US4791517 Detection of unsafe voltages on mobile equipment |
| 12/08/1988 | DE3807355A1 Method and arrangement for acquiring and detecting electrostatic and electrokinetic charges on textiles and other materials |
| 12/08/1988 | DE3718114A1 Verfahren zur feststellung der elektrischen laufzeit von signalstrecken Method for fixed position of the electrical signal term of stretch |
| 12/07/1988 | EP0294205A2 Electromagnetic anechoic chamber with an inner electromagnetic wave reflection surface and an electromagnetic wave absorption small ball disposed in the chamber |
| 12/06/1988 | US4789953 Circuit arrangement for averaging |
| 12/06/1988 | US4789794 Time domain reflectometer |
| 12/01/1988 | WO1988009510A1 Process for determining the electrical duration of signal sections |
| 11/23/1988 | EP0292140A2 Photoreceptor |
| 11/22/1988 | US4786858 Liquid crystal electrostatic voltmeter |
| 11/16/1988 | CN88102717A Nondestructive readout of latent electrostatic image formed on insulating material cross-reference to related applications |
| 11/16/1988 | CN87209727U Audio-optical type phase-sequence tester |
| 11/15/1988 | US4785294 Static monitoring system |
| 11/15/1988 | US4785248 Air ionization control means |
| 11/15/1988 | US4785237 Amplifier with D.C. compensation |
| 11/15/1988 | US4785233 Method and apparatus for testing electrical equipent |
| 11/15/1988 | US4785232 Contactless hall coefficient measurement apparatus and method for piezoelectric material |
| 11/09/1988 | CN87101030A Measuring system for ultra-fast changed electric field |
| 11/08/1988 | US4783640 Simultaneous-delay correlator apparatus |
| 11/03/1988 | WO1988008529A1 Device for measuring, at a plurality of points, the microwave field diffracted by an object |
| 11/03/1988 | DE3712558A1 Circuit arrangement for detecting noise pulses |
| 11/03/1988 | DE3712509A1 Method for locating electromagnetic direct-current fields and radiation measuring instrument therefor |
| 11/01/1988 | US4782281 Method of measuring the parameters of a resonator |