| Patents for G01R 29 - Arrangements for measuring or indicating electric quantities not covered by groups (11,937) |
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| 01/22/1985 | US4495621 Glitch detecting and measuring apparatus |
| 01/22/1985 | US4495461 Waveform crossing detector |
| 01/16/1985 | EP0131060A1 Device for partially determining voltages or charges on a human body and for diverting such voltages or charges from a human body |
| 01/09/1985 | EP0130924A1 Method and equipment for picking up antenna patterns in near-fields |
| 01/02/1985 | CA1180397A Pulse toggle monitor circuit |
| 01/01/1985 | US4491799 Device for indicating pole-zero cancellation, in particular for amplifiers for ionizing radiation spectroscopy |
| 01/01/1985 | US4491783 Apparatus for measuring noise factor and available gain |
| 12/27/1984 | CA1180064A Method and apparatus for automatically detecting signal levels |
| 12/25/1984 | US4490671 Apparatus and method for determining the number of turns on a sample coil |
| 12/04/1984 | US4486752 Pulse width discriminator applicable to ATC transponders |
| 12/04/1984 | US4486706 Power flow direction detector |
| 11/14/1984 | EP0125006A1 Apparatus for measuring the electric potential of an electrostatic field |
| 11/06/1984 | US4481628 Apparatus for testing dynamic noise immunity of digital integrated circuits |
| 10/31/1984 | EP0123340A1 Circuit for measuring noise characteristics of electronic components |
| 10/30/1984 | US4480283 Procedure and means for monitoring the phase sequence in a three-phase network |
| 10/23/1984 | US4479160 Band-pass sequence filters for symmetrical components of multiphase AC power systems |
| 10/16/1984 | US4477770 Noise field intensity measuring apparatus |
| 10/16/1984 | CA1176310A1 Method of measuring thermal properties of a resonator |
| 10/03/1984 | EP0120087A1 Noncontact electrostatic hoop probe for combustion engines. |
| 10/02/1984 | US4475086 Duty cycle detector |
| 09/18/1984 | CA1174733A1 Period measurement system |
| 09/13/1984 | WO1984003565A1 Method for measuring an electric signal, series/parallel feed-back measuring circuit and application of said method or measuring circuit to measure voltage sources having a very high ohmic inner impedance |
| 09/12/1984 | EP0118396A1 Measuring process for electric signals using a series-parallel feed-back circuit, and application of this process or circuit to the measuring of voltage sources with extremely high internal impedances |
| 09/11/1984 | US4471235 Short pulse width noise immunity discriminator circuit |
| 09/11/1984 | CA1174364A1 Apparatus for providing a histogram in a real time of the separation times between electronic signals |
| 09/05/1984 | EP0117421A1 Process and apparatus for measuring weak noise frequency signals in a polyphase power transmission line |
| 09/04/1984 | US4470017 Linear voltage-pulse base-clipping circuit with adjustable-threshold condition and echograph comprising such a device |
| 09/04/1984 | US4470009 Surface potentiometer |
| 08/28/1984 | US4468669 Self contained antenna test device |
| 08/21/1984 | US4467272 Circuit for measuring inductance changes |
| 08/21/1984 | US4467271 Test apparatus for determination of vibration characteristics of piezoelectric transducers |
| 08/14/1984 | US4465969 Voltage and electric field measuring device using light |
| 08/14/1984 | CA1172760A1 Apparatus and method for distance determination between a receiving device and a transmitting device utilizing a curl-free magnetic vector potential field |
| 08/14/1984 | CA1172757A1 Apparatus and method for demodulation of a modulated curl-free magnetic vector potential field |
| 08/14/1984 | CA1172756A1 Apparatus and method for transfer of information by means of a curl-free magnetic vector potential field |
| 07/31/1984 | US4463431 For a.c. signals |
| 07/31/1984 | US4463425 Period measurement system |
| 07/31/1984 | US4463316 Method and apparatus for determining the dynamic surface potential of a solution |
| 07/25/1984 | EP0113892A2 Signal detector |
| 07/24/1984 | US4462051 Demodulator for an asynchronous binary signal |
| 07/03/1984 | US4458283 Static protective relay |
| 06/19/1984 | US4455532 Apparatus for measuring charged particle beam |
| 06/12/1984 | US4453550 Method and means for detecting a periodic wave structure |
| 06/12/1984 | CA1169153A1 Programmable signal analyzer |
| 05/29/1984 | US4451783 Method of detecting symmetrical components of supply-line three-phase voltage and device for carrying out same |
| 05/23/1984 | EP0109316A1 Amplification and measurement circuit of electrical charges by impulses |
| 05/23/1984 | EP0109037A1 Process and device for evaluating the noise level on a telephone line |
| 05/23/1984 | EP0108806A1 Electron-optical wide band signal measurement system |
| 05/15/1984 | US4449222 Digital modulation quality monitor |
| 05/08/1984 | US4447782 Apparatus for automatic measurement of equivalent circuit parameters of piezoelectric resonators |
| 05/01/1984 | US4446425 Measurement of electrical signals with picosecond resolution |
| 05/01/1984 | CA1166692A1 Electric field detector |
| 04/12/1984 | WO1984001438A1 Noncontact electrostatic hoop probe for combustion engines |
| 04/03/1984 | US4441138 Charge cell |
| 03/27/1984 | US4439216 Electrostatic precipitator having apparatus for sensing electrostatic field strengths |
| 02/28/1984 | US4434399 Electron-optical wide band signal measurement system |
| 02/28/1984 | US4434397 Remote load current sensor |
| 02/21/1984 | US4433298 Calibrated apparent surface voltage measurement apparatus and method |
| 02/21/1984 | US4433297 Time averaged amplitude comparison electrometer |
| 02/21/1984 | US4433296 Electrostatic system analyzer |
| 02/21/1984 | CA1162587A1 Apparatus and method for measuring and maintaining copy quality in an electrophotographic copier |
| 02/01/1984 | EP0099539A1 Optical electric-field measuring apparatus |
| 01/24/1984 | US4427948 Pulse toggle monitor circuit |
| 01/24/1984 | US4427939 Electronic phase sequence indicator for three-phase electric systems |
| 01/03/1984 | US4424483 Microwave radiation monitor |
| 01/03/1984 | US4424481 Apparatus for measuring an electrical field |
| 12/27/1983 | US4423498 Control apparatus for a recording medium drive motor in a digital information reproducing apparatus |
| 12/27/1983 | US4423374 Unbalanced current detector for three phase electrical system |
| 12/27/1983 | US4423372 Instrument for monitoring the radiation hazard arising from electric and/or magnetic radio-frequency fields |
| 12/13/1983 | CA1158725A1 Ultra high resolution josephson sampling technique |
| 12/06/1983 | US4419622 EM Sensor for determining impedance of EM field |
| 12/06/1983 | US4418577 Process for measuring and analyzing potentials of piezo-electric origin generated by a rigid member made of an organic material |
| 11/30/1983 | EP0095344A1 Method of monitoring electrostatic charge deposition |
| 11/29/1983 | US4418341 Noise detection apparatus |
| 11/24/1983 | WO1983004108A1 State of charge indicator |
| 11/24/1983 | WO1983004107A1 Electron-optical wide band signal measurement system |
| 11/15/1983 | CA1157099A1 Noise detection apparatus |
| 11/08/1983 | US4414639 Sampling network analyzer with sampling synchronization by means of phase-locked loop |
| 11/08/1983 | US4414638 Sampling network analyzer with stored correction of gain errors |
| 10/25/1983 | US4412349 Remote display of percentage modulation data obtained at a transmitter site |
| 10/25/1983 | US4412299 Phase jitter detector |
| 10/25/1983 | US4412191 Method and arrangement for quantitative potential measurements on surface-wave filters |
| 10/25/1983 | US4412175 Debris alarm |
| 10/25/1983 | US4412172 Method of measuring the thermal properties of a resonator |
| 10/19/1983 | EP0091563A1 Method and device for determining the time distance of two electric pulses |
| 10/18/1983 | US4410817 Precision time duration detector |
| 10/18/1983 | CA1155562A1 Realtime radiation exposure monitor and control apparatus |
| 10/12/1983 | EP0091397A1 Measuring arrangement for the exact positioning of the begin of the measuring range of a measuring converter |
| 10/12/1983 | EP0091215A2 Demodulator for an asynchronous binary signal |
| 10/11/1983 | US4409509 Piezoelectrically driven transducer for electron work function and contact potential measurements |
| 09/27/1983 | US4406987 Charge level sensor |
| 08/30/1983 | US4401900 Ultra high resolution Josephson sampling technique |
| 08/23/1983 | CA1152565A1 Electrometer probe |
| 08/18/1983 | WO1983002829A1 Measurement of electrical signals with picosecond resolution |
| 08/16/1983 | US4399512 Waveform searching system |
| 08/16/1983 | US4399354 Digital rate monitor |
| 08/09/1983 | US4398232 Protective relaying methods and apparatus |
| 08/09/1983 | US4397558 System for reducing the effects of background radiation |
| 08/03/1983 | EP0084644A1 Apparatus for testing dynamical noise immunity of digital integrated circuits |
| 07/26/1983 | CA1150791A1 Circuit for determining the phase jitter of digital signals |