Complete and partial flux switching in ferrite cores

A previously proposed switching model of ferrite cores under voltage pulsed excitations was based on the assumption that the flux switching occurs along the static magnetizing curve, independent of pulse amplitude. To define the limit of applicability of this model, the flux switching properties of ferrites under quasi-voltage pulsed excitations are investigated in terms of the switching φ(F) curve. The bounds of the voltage pulsed excitation are determined by two indications, composed of circuit parameters and the pulse amplitude. Domain patterns in the core driven by the quasi-voltage pulses are discussed briefly with regard to the relation between the complete flux switching and the partial switching.