Matches 501 - 550 out of 599 < 1 2 3 4 5 6 7 8 9 10 11 12 >
Match Document Document Title
3882387 ELECTRICAL CURRENT DETECTOR  
A folded annular core of uniform cross section has an excitation winding and a feedback winding on each core half. A source of unidirectional current pulses periodically energizes the excitation...
3855528 D-C CURRENT MEASURING CIRCUIT  
A measuring circuit for indicating the magnitude of d-c current flow through an associated circuit or conductor while maintaining electrical isolation therefrom. The measuring circuit includes a...
3818337 METHOD OF AND APPARATUS FOR IMPROVING THE LINEARITY OF THE CURREnT TRANSFORMATION OF A DC MEASURING TRANSDUCTOR  
The linearity of the current transformation of a DC measuring transductor, having on a core of magnetisable material a primary winding carrying the DC to be measured and a secondary winding fed...
3812428 METHOD OF AND APPARATUS FOR THE MEASURING OF DIRECT CURRENT  
An apparatus for the potential free measuring of direct current with direct time coding includes a magnetizable core. A premagnetization winding, a measuring winding and an induction winding are...
3808530 DIRECT CURRENT AMPERE-HOUR METER  
A direct current watt-hour meter having a rotary disc, voltage and current coils for effecting rotation of the disc, a capacitor in series with the voltage coil and a series circuit including a...
3801907 DIRECT CURRENT MEASUREMENT  
A direct current measuring device utilizing two pairs of saturable toroidal reactors to generate two output signals which are compared to provide a feed back signal. The feed back signal is applied...
3801908 CURRENT MEASURING APPARATUS EMPLOYING MAGNETIC SWITCH  
Current measuring apparatus for determining the strength of the current in an electric conductor. The apparatus comprises an actuating coil, a magnetic switch positioned within the composite...
3768011 MEANS FOR MEASURING MAGNITUDE AND DIRECTION OF A DIRECT CURRENT OR PERMANENT MAGNET, INCLUDING CLIP-ON DIRECT CURRENT SENSING INDUCTOR  
A direct current or magnetic intensity input produces an offset in the average magnetic intensity applied to a sense inductor core of non-linear magnetic material. No electrical connection is...
3742764 DIRECT READING RESISTANCE THERMOMETER  
A direct reading resistance thermometer in the form of an electrical bridge having a first current comparator for bridge balance and a second current comparator in an arm of the bridge and having...
3714544 BI-POLARITY POTENTIAL TRANSFORMER FOR MEASURING D-C VOLTAGE  
A bipolarity potential transformer for measuring the voltage between a d-c line and a reference point has unidirectionally conducting branches connected in inverse parallel relation between the d-c...
3704415 AUTOMATIC BALANCING MEASURING METER  
An automatic balancing measuring meter is comprised by a magnetic core including an input, an output and a positive feedback windings wound thereon, a movable magnet providing a magnetic flux...
3699442 BI-DIRECTIONAL SIGNAL DETECTOR WITH INPUT/OUTPUT ISOLATION  
DC (direct current) signal magnitude and direction detection apparatus wherein separate signals derived from the respective primary energizing paths for alternate opposite magnetic saturation of a...
3689836 MAGNETODIODE PULSE INITIATOR  
A pulse initiator for generating pulses at a rate proportional to the rate of rotation of a shaft includes a disc-shaped permanent magnet and a return plate axially displaced on the shaft for...
3649912 DIRECT CURRENT TRANSFORMER EMPLOYING MAGNETORESISTANCE DIODES FOR USE IN CURRENT MEASUREMENT  
This is a direct current transformer wherein there is inserted through the interior space of a C-shaped core a primary conductor through which there flows a direct current; there is disposed a...
3634875 BIDIRECTIONAL DIRECT-CURRENT DETECTOR WITH TRANSFORMER ISOLATION  
A DC-detector wherein the DC to be detected is utilized to modify the amplitude and mark-space timing of an oscillator utilizing a common magnetic circuit and wherein the so-modified output is...
3626291 CURRENT-MEASURING APPARATUS  
Apparatus including a set of adjacent coils which form a closed path adapted to be closed about a current-carrying conductor. The voltage output from said coil, which is induced by the closing...
3539908 INSTRUMENT-TYPE TRANSFORMER ARRANGEMENT FOR TRANSFORMING BOTH POLARITIES OF A UNIDIRECTIONAL CURRENT  
3526830 COIL WINDING TESTER INCLUDING CHOPPED WAVE OSCILLATORY CIRCUIT  
3525041 MAGNETIC FIELD MEASURING METHOD AND DEVICE EFFECTIVE OVER A WIDE FREQUENCY RANGE  
3500171 SELF-BALANCING CURRENT COMPARATOR FOR PRECISE VOLTAGE LEVELS AND POTENTIOMETER USAGE  
3500195 CURRENT TRANSDUCTOR HAVING INSTANTANEOUS RESPONSE  
3490038 RESISTANCE MEASURING APPARATUS HAVING A MAGNETIC MODULATOR FOR COMPARING THE RESISTANCE RATIO OF TWO RESISTORS  
3490042 DIRECT CURRENT MEASURING REACTANCE ARRANGEMENT  
3488591 VOLTAGE AND CURRENT RESPONSIVE APPARATUS EMPLOYING MOLECULAR FUNCTION BLOCK SENSORS SENSITIVE TO ELECTRIC AND MAGNETIC FIELDS FOR USE IN A HIGH VOLTAGE BUSHING  
3484691 MAGNETIC FLUX MODULATOR FOR DIRECT CURRENT MEASUREMENT  
3482163 MAGNETIC SIGNAL MEASURING DEVICE INCLUDING DEGAUSSING MEANS  
3467864 METHOD AND APPARATUS FOR MEASURING PULSE MAGNITUDE AND CHARGE  
3454879 DIRECT CURRENT SUMMING CIRCUIT WITH COMPENSATING MEANS  
3453475 NONCONTACT CURRENT-SENSING DEVICE EMPLOYING A VACUUM TUBE SURROUNDING THE CURRENT CARRYING CONDUCTOR  
3439270 ELECTRICAL DEVICE FOR INDICATING THE MATHEMATICAL PRODUCT OF TWO ELECTRICAL QUANTITIES  
3436650 SPINNING LINE INTEGRAL MAGNETOMETER FOR MEASURING A CURRENT OR AN ELECTRIC FIELD  
3435338 LINE INTEGRAL MAGNETOMETER FOR MEASURING CURRENT FLOW THROUGH AN ELECTROLYTE  
3430142 DIRECT CURRENT MEASUREMENT APPARATUS  
3428896 SYSTEM FOR TRANSMITTING TO A REMOTE POINT A SIGNAL THAT VARIES AS A FUNCTION OF THE CURRENT FLOW IN A HIGH VOLTAGE CONDUCTOR  
3427534 DEVICE FOR MEASURING THE MAGNITUDES OF UNIDIRECTIONAL MAGNETIC FIELS  
3422352 APPARATUS FOR MEASURING CURRENT FLOW  
3422351 HALL-EFFECT INSTRUMENT FOR MEASURING THE RMS VALUE OF AN A.C. SIGNAL  
3418575 High voltage current measuring device employing means responsive to the electromagnetic field generated by the current  
3411084 Microwave devices utilizing magnetoresistance effect  
3398368 Meter apparatus having logarithmic response to current and a linear response to temperature  
3396338 Instrument-type transformers for unidirectional current circuits  
3390330 Thin film cryogenic supercurrent measuring device  
3365656 Static control circuit for regulators  
3365665 Hall current measuring apparatus having a series resistor for temperature compensation  
3333192 Second harmonic magnetic modulator measuring system  
3323057 Hall generator current meter having extraneous field compensating apparatus  
3323056 D.c. measurement using conductor surrounding core with plural hall generators havingindividual feedback coils  
3312898 Polyphase current measuring device using several signal detectors each positioned to respond to only one phase current magnetic field  
3259844 Signal amplitude discriminator having a plurality of superconducting loops arranged to respond to the magnetic field produced by the signal  
3244974 Superconductive device for detecting magnetic field intensities  
Matches 501 - 550 out of 599 < 1 2 3 4 5 6 7 8 9 10 11 12 >