Flux linkage between two solenoidal tape windings as a factor in the reading of cylindrical thin-film logical elements

摘要

Cylindrical ferromagnetic films can be used as logical elements, and when axially aligned they are energized, and the remanence is sensed, by cylindrical current sheets. The read `1???????? to `0???????? ratio is influenced by the mutual inductance between the sheets. The mutual inductance between two solenoidal tape windings has been measured, the windings being formed around a copper rod because the films are mostly produced by electrodeposition on to a conducting substrate. The experimental results have been compared with the solutions of the magnetic-field diffusion equation, thereby establishing the relative importance of the dimensions and resistivities of the various conductors in the frequency range 0 to about 10 Mc/s.