| Patents for G01R 15 - Details of measuring arrangements of the types provided for in groups , or (13,411) |
|---|
| 05/19/1982 | EP0051911A1 Method and apparatus for enhancing the output of a log-antilog type RMS converter |
| 05/19/1982 | EP0051820A1 Arrangement to rapidly eliminate a residual charge on a capacitive voltage divider used in the control of high alternating voltages |
| 05/11/1982 | US4329641 Analog-to-digital tester |
| 05/11/1982 | US4329638 Capacitive voltage transformers |
| 05/11/1982 | US4329580 Fiber optic, liquid crystal display electrical measurement system |
| 05/05/1982 | EP0050705A1 Method and circuit for the contactless measuring of direct and alternating currents, especially momentary current values |
| 05/04/1982 | US4328461 Apparatus for and method of measuring a high voltage electric field |
| 05/04/1982 | US4327985 Battery-voltage indicator of camera |
| 04/27/1982 | US4327390 Capacitive voltage transformers with electronic output |
| 04/21/1982 | EP0049918A1 Photothermal method for study of light absorption by a sample substance |
| 04/13/1982 | US4324255 Method and apparatus for measuring magnetic fields and electrical currents in biological and other systems |
| 03/30/1982 | US4322710 Electrical resistors |
| 03/30/1982 | US4322709 Adjustable flux generator a magnetically activated electronic switch |
| 03/30/1982 | US4322708 Electromagnetic device utilizing a pair of magnetically activated electronic switches |
| 03/23/1982 | US4321530 Multimeter with tone indication |
| 03/09/1982 | US4319186 Signal sensors |
| 02/24/1982 | EP0046298A1 Apparatus for measuring a magnetic field |
| 02/16/1982 | US4316141 Measuring device with optical signal transmission |
| 02/16/1982 | US4316138 Electric switching section |
| 02/10/1982 | EP0045715A2 High-voltage metal-clad gas-insulated equipment |
| 02/09/1982 | US4315211 Preamplifier for voltage measuring instrument with non-interacting zero and span controls |
| 02/02/1982 | US4314201 Power measuring apparatus |
| 02/02/1982 | US4314200 Method and apparatus for detection of magnetization |
| 02/02/1982 | US4314146 Analog display device |
| 01/06/1982 | EP0042878A1 Device for monitoring an amplifier stage |
| 01/05/1982 | US4309655 Measuring transformer |
| 12/29/1981 | CA1115084A1 Optical measuring device using optical fibers |
| 12/01/1981 | US4303984 Sensor output correction circuit |
| 11/03/1981 | US4298838 Transformer device |
| 11/03/1981 | US4298837 Hand held testing device for measuring different electrical quantities |
| 11/03/1981 | US4298245 Waveguides with a low birefringence |
| 10/20/1981 | US4296412 Method and apparatus for signal transmission |
| 10/13/1981 | US4295094 High voltage high frequency analog signal measuring system |
| 10/13/1981 | US4295090 Electronic selector switch particularly for use in radioscondes |
| 10/07/1981 | EP0036935A1 Hall effect apparatus and flux concentrator assembly therefor |
| 09/29/1981 | US4291989 Abnormality sensing device for gas-insulated electric apparatus |
| 09/22/1981 | CA1109562A1 Voltage to rate converter circuit |
| 09/16/1981 | EP0035758A1 Circuit arrangement for generating supply voltages for the picture tubes of television receivers |
| 09/15/1981 | US4290146 Measuring device for transmitting measuring signals via an optical link |
| 09/09/1981 | EP0035403A1 Voltage measuring instrument and preamplifier therefor |
| 08/25/1981 | US4286214 Current sensor for phase inversion-modulation of AC signals |
| 08/25/1981 | US4286213 Energy sensor |
| 08/25/1981 | US4286211 Direct current detecting device using saturable reactors |
| 08/18/1981 | US4285022 Devices adapted to detect variations in magnetic flux notably circuit breakers |
| 08/11/1981 | US4283678 Cable condition analyzing system for electric arc furnace conductors |
| 08/11/1981 | US4283677 Clamp type galvanometer |
| 08/11/1981 | US4283643 Hall sensing apparatus |
| 08/04/1981 | US4282578 System for linearizing non-linear transducer signals |
| 07/29/1981 | EP0032647A1 Synchronous sensing device for a controlled-ignition engine |
| 07/28/1981 | US4281290 Voltage monitor |
| 07/21/1981 | US4280093 Zero-current detector for high voltage DC transmission line |
| 07/14/1981 | US4278939 Electromagnetic arrangement for measuring electrical current |
| 07/14/1981 | US4278349 Fiber optical temperature sensors |
| 07/07/1981 | US4277749 Input circuit for electronic instruments |
| 06/30/1981 | US4276510 Apparatus for sensing current transformer primary current as a function of differential core inductance |
| 06/23/1981 | US4275295 Limit and measurement value transmitter |
| 06/16/1981 | US4274052 Current meter using core saturation |
| 06/16/1981 | US4274051 Electromagnetic arrangement for measuring electrical current |
| 06/16/1981 | US4274050 Voltage measuring apparatus |
| 06/10/1981 | EP0030186A1 Measuring shunt with induced error-voltage compensation |
| 06/10/1981 | EP0030041A1 Measuring transformer, especially for measuring a magnetic field generated by a measuring current |
| 06/10/1981 | EP0029903A1 Measuring arrangement for electric currents |
| 06/09/1981 | CA1102879A1 Electronic current transducer for high voltage transmission lines |
| 06/02/1981 | US4271392 Latching relay circuits and analog to digital converters |
| 05/26/1981 | US4269483 Electro-optical voltage measurement device |
| 05/05/1981 | US4266189 Current measuring apparatus and method |
| 04/21/1981 | US4263549 Apparatus for determining differential mode and common mode noise |
| 04/21/1981 | US4262675 Blood pressure measuring instrument having compensation circuit |
| 04/15/1981 | EP0026930A1 System for sensing current in high voltage transmission lines utilizing the transmission of digital information by optical fibers |
| 04/14/1981 | US4262275 Hall effect apparatus for flux concentrator assembly therefor |
| 04/07/1981 | CA1098965A1 Linear signal isolator and calibration circuit for electronic current transformer |
| 03/24/1981 | US4258348 Current measuring transformer |
| 03/24/1981 | US4258297 Voltage indicator for a stroboscope |
| 03/17/1981 | CA1097815A1 Process for the measurement of absolute values by means of a non-linearly working measured value emitter and a measuring device for carrying out the process |
| 03/10/1981 | US4255709 Device for providing an electrical signal proportional to the thickness of a measured coating with an automatic range switch and sensitivity control |
| 03/10/1981 | US4255706 Broadband voltmeter |
| 03/10/1981 | US4255705 Peak detection and electronic compensation of D. C. saturation magnetization in current transformers used in watt hour meter installations |
| 03/10/1981 | US4255704 Zero crossing detection and electronic compensation of D. C. saturation magnetization in current transformers used in watthour meter installations |
| 03/10/1981 | US4255018 Fibre optical arrangement for measuring the intensity of an electric current |
| 02/24/1981 | US4253061 Light converting type detectors |
| 02/17/1981 | US4251776 Arrangement for raising a signal to a higher power |
| 02/10/1981 | US4250501 Current sensing circuitry |
| 02/10/1981 | US4250448 Voltmeter apparatus for cascaded transformers |
| 02/10/1981 | US4250447 Digital multimeter with more closely spaced ranges |
| 02/03/1981 | US4249076 Optical measuring device using optical fibers |
| 01/28/1981 | EP0023180A1 Interferometric device for electric current measurement using fibre optics |
| 01/28/1981 | EP0022834A1 Improvement relating to voltage capacitive transformers. |
| 01/20/1981 | CA1094160A1 Multiple range peak reading voltmeter |
| 01/07/1981 | EP0021916A1 Method of watching the instantaneous state of an electric circuit and especially of detecting a break in said circuit |
| 01/07/1981 | EP0021199A2 Optical sensing system |
| 01/06/1981 | US4243936 Method for magneto-optical current measurements |
| 12/23/1980 | US4241448 High sensitivity dual function meter circuit |
| 12/23/1980 | US4241373 Switchgear voltage sensor |
| 12/23/1980 | US4241303 Linearization circuit |
| 12/16/1980 | US4240072 Load indicator for an air cleaner |
| 12/16/1980 | US4240059 Current divider for a current sensing transducer |
| 12/16/1980 | US4240031 Device for measuring the potential of an alternating current carrying inner conductor of an encased high-voltage switching mechanism |
| 11/26/1980 | EP0019507A1 Improvement relating to capacitive voltage transformers with electronic output |
| 11/18/1980 | US4234863 Inductive pickup clip |
| 11/18/1980 | US4234846 Methods of eliminating conversion factor drift effects in a clip-on hall-effect ammeter |