Wire inhomogeneity detector having a core with opposing pole pieces and guide pieces adjacent the opposing pole pieces
Gibson, George H. (Lafayette, CA); Smits, Robert G. (Lafayette, CA); Eberhard, Philippe H. (El Cerrito, CA) · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2023
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.