| Patents for G01R 15 - Details of measuring arrangements of the types provided for in groups , or (13,411) |
|---|
| 09/05/1978 | US4112357 Lighting current detector |
| 08/29/1978 | US4110746 A-D converter having nonlinear characteristics |
| 08/15/1978 | US4106869 Distance compensated electrostatic voltmeter |
| 08/08/1978 | US4106095 Electrical usage display system |
| 08/08/1978 | US4105967 Automatic range selection circuit |
| 08/08/1978 | US4105966 Remote lightning monitor system |
| 07/11/1978 | USRE29700 Voltage-current converter |
| 07/04/1978 | US4099075 Signal detection apparatus using an adaptive threshold |
| 06/27/1978 | US4097802 Magnetoresistive field sensor with a magnetic shield which prevents sensor response at fields below saturation of the shield |
| 06/20/1978 | US4096434 Automatic range selector for volt-ammeter instrument |
| 05/30/1978 | US4092591 Electric meter |
| 05/16/1978 | US4090130 Capacitive coupled clamp-on voltage probe |
| 05/16/1978 | US4089588 Nematic liquid crystalline mixture of α-cyanostilbenes and application thereof in image display devices |
| 05/02/1978 | US4087744 Device for determining a high-voltage potential in metal-encapsulated high-voltage switching installations and equipment |
| 04/11/1978 | US4084155 Two-wire transmitter with totalizing counter |
| 03/28/1978 | US4081696 Current squaring circuit |
| 03/14/1978 | US4079429 Optical detector for magnetic fields employing feedback circuitry |
| 02/21/1978 | US4075560 Expanded scale electrical measuring circuit |
| 02/21/1978 | US4075559 Technique for extending the range of a signal measuring circuit |
| 02/14/1978 | US4074193 Combined current and voltage measuring apparatus |
| 02/07/1978 | US4072896 Apparatus for measuring the electron escape potential of metal surfaces |
| 01/24/1978 | US4070622 Magneto-optical high voltage current measuring transducer |
| 01/24/1978 | US4070620 Magneto-optical high-voltage current measuring transducer |
| 01/24/1978 | US4070572 Linear signal isolator and calibration circuit for electronic current transformer |
| 12/27/1977 | US4065682 Logarithmic converter |
| 12/20/1977 | US4064456 Meter box assembly |
| 12/20/1977 | US4064454 Corona discharge detecting device |
| 12/13/1977 | US4063170 Level meter circuit |
| 12/06/1977 | US4061030 Method and device for correcting the output signal from a digital transducer for measuring a physical magnitude or variable |
| 11/29/1977 | US4060771 Method and circuit arrangement for conditioning direct current signals in electric measurand transmitters, particularly electromechanical precision and fine balances |
| 11/22/1977 | US4059798 Method and apparatus for measuring the current flowing in a workpiece |
| 10/18/1977 | US4054835 Rapid response generating voltmeter |
| 10/18/1977 | US4054834 Device for measuring AC in a high tension line |
| 10/04/1977 | US4052668 Arrangement comprising a high voltage measuring capacitor |
| 10/04/1977 | US4052665 Capacitive pickup device for pulsating high voltage measurements |
| 09/20/1977 | US4050019 Range switching circuit for solid state electrometer |
| 08/30/1977 | US4045733 Multiplex circuit with time delay for stabilization |
| 08/16/1977 | US4042881 Voltage measuring device having an amplifier in the probe |
| 08/16/1977 | US4042867 Remote selector for flight instruments |
| 08/09/1977 | US4041382 Calibrating a measurement system including bridge circuit |
| 08/02/1977 | US4039976 Coaxial current probe |
| 07/19/1977 | US4037150 Method of and apparatus for eliminating the effect of non-equipotentiality voltage on the hall voltage |
| 07/05/1977 | US4034291 Electronic measuring instrument combining an oscilloscope and a digital multimeter |
| 07/05/1977 | US4034283 Compensated voltage divider |
| 07/05/1977 | US4032996 Sealing apparatus for toilet |
| 06/28/1977 | US4032843 Compensated signal isolator |
| 06/21/1977 | US4030339 Impact impulse measuring device |
| 05/24/1977 | US4025868 Frequency digital converter |
| 05/24/1977 | US4025849 Method of measuring analog input voltages through isolation transformers and apparatus for the same |
| 05/24/1977 | US4025842 Current divider provided temperature-dependent bias potential from current regulator |
| 05/17/1977 | US4024471 Meter and amplifier circuit for measuring AC and DC signals |
| 05/10/1977 | US4023101 Multiple function electrical measuring and indicating apparatus |
| 04/05/1977 | US4016491 Single knob rotary control of meter damping and push control of damping override |
| 03/29/1977 | US4015191 D.C. high voltage power source with precise load current measurement |
| 03/08/1977 | US4011505 Current measuring device |
| 03/08/1977 | US4011504 Solid state scale expanding circuit for electrical indicator devices |
| 02/08/1977 | US4007414 Current transducer arrangement |
| 01/18/1977 | US4004247 Voltage-current converter |
| 01/18/1977 | US4004221 Test device and method of checking circuitry |
| 01/11/1977 | US4002977 Measuring circuit |
| 01/11/1977 | US4002976 Voltage sensing device for use at high voltage |
| 01/11/1977 | US4002975 Electro-optic measurement of voltage on high-voltage power lines |
| 01/04/1977 | US4001683 Automatic range selector |
| 12/28/1976 | US4000463 Direct-reading decibel meter |
| 12/28/1976 | US4000462 Fault indicator circuit |
| 12/14/1976 | US3997845 Device for modifying an analog electric signal |
| 12/14/1976 | US3996880 Field strength meter |
| 12/07/1976 | US3996513 Differential microampere current sensor |
| 11/02/1976 | US3990001 Measuring transformer for installation in the metal enclosure of a switching installation |
| 10/26/1976 | US3988684 Voltage transformer for an insulated high-voltage switching installation containing several conductors |
| 09/28/1976 | US3983477 Device for measuring extra high voltage line current |
| 09/14/1976 | US3980949 Magneto-optical measuring transducer for very high currents/voltages |
| 09/07/1976 | US3978727 Method and device for correcting the output signal from a digital transducer for measuring a physical magnitude or variable |
| 08/31/1976 | US3978404 Indicating or measuring instruments |
| 08/31/1976 | US3978400 Ground fault detector with a nonlinear sensing means |
| 08/31/1976 | US3978311 Voltage sensor circuit for an arc welding wire feed control |
| 08/24/1976 | US3976941 Auto-ranging system for an electronic energy meter |
| 08/10/1976 | US3974446 Polyphase fault current flow detecting and resetting means |
| 08/10/1976 | US3974444 Combined display and range selector for use with digital instruments employing the binary numbering system |
| 08/10/1976 | US3974440 Measuring transformer for a fully insulated, metal-clad high-voltage installation |
| 08/03/1976 | US3973147 Temperature measuring circuit |
| 07/27/1976 | US3971984 Wide-range logarithmic responding translation circuit |
| 07/20/1976 | US3970930 Current meter |
| 07/13/1976 | US3969710 Apparatus for picking up signal currents flowing through signal lines |
| 07/13/1976 | US3969671 Charging current voltmeter |
| 07/06/1976 | US3968432 Remote voltage sensor for power system regulation |
| 06/29/1976 | US3967144 Hall-voltage device |
| 06/22/1976 | US3965410 A.C. potentiometer with bridge having voltage controllable devices |
| 06/15/1976 | US3964020 High voltage system with self-test circuitry |
| 06/15/1976 | US3963931 X-ray tube current monitor |
| 06/08/1976 | USRE28851 Current transformer with active load termination |
| 06/08/1976 | US3962694 Method and apparatus for monitoring an electrically actuated tool |
| 06/08/1976 | US3962609 Voltage transformer for a completely insulated high-voltage installation |
| 05/18/1976 | US3958178 Automatic ranging circuit for a digital panel meter |
| 04/20/1976 | US3952243 Voltage transformer for a high voltage switching apparatus |
| 04/13/1976 | US3950694 Installation for the detection and processing of electrical signals |
| 04/06/1976 | US3949290 Instrument transformer with cone-shaped insulating layer |
| 03/16/1976 | US3944919 Direct current measuring system for rectifiers |
| 03/16/1976 | US3944918 Electroosmotic kilovoltmeter |
| 03/09/1976 | US3943440 Sensitivity coding circuit for an electronic instrument |