Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent
1982-08-31
1989-09-05
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
324234, 324236, G01N 2772, G01N 2782, G01R 3312
Patent
active
048642363
ABSTRACT:
A device for uncovering imperfections in electrical conducting wire, particularly superconducting wire, by detecting variations in eddy currents. Eddy currents effect the magnetic field in a gap of an inductor, contained in a modified commercial ferrite core, through which the wire being tested is passed. A small increase or decrease in the amount of conductive material, such as copper, in a fixed cross section of wire will unbalance a bridge used to measure the impedance of the inductor, tripping a detector and sounding an alarm.
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Gibson et al., "Detecting . . . With an Eddy Current Delector", Group A Physics Natl. #918, 8/1981, Univ. of Calif., Berkeley, Calif., pp. 1-11.
Eberhard Philippe H.
Gibson George H.
Smits Robert G.
Carnahan L. E.
Eisenzopf Reinhard J.
Gaither Roger S.
Hightower Judson R.
Snow W.
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