Flux Divison in a Saturable Multipath Core

An mmf drive NI is applied to the major leg of asaturable ferrite core whose three legs are initially at negative saturation. The resulting ¿¿ in the driven leg divides into the other two (minor) legs, one of which is loaded by a resistive load. This division of flux is analyzed, using for each leg the parabolic inelastic switching model ¿ = ¿peak (F) [1-(¿/¿sat)²], which is valid only if mf F is high enough to switch ¿ to positive saturation. Calculated plots of flux-division ratio D vs NI for various load values are in quite good agreement with experimental data, except in the region of low NI, where the parabolic mdel is invalid for the longer miner leg.