Flux Distribution in Ferrite Cores under Various Modes of Partial Switching

Abstract
This paper describes the flux distribution in a ferrite core after partial switching to the same flux density by three different methods: (1) by applying a fixed pattern of alternate-polarity pulses with diminishing amplitude, (2) by amplitude limiting, and (3) by time limiting. Discontinuities in the residual magnetization curve in the first case show the existence of regions of oppositely-directed magnetization. A comparison of the curves shows that the time-limited state can be represented by a model consisting of a large number of regions magnetized in alternate directions.

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