The cavity around magnetic cores in linear induction cell act as a non-linear winding when the pulses come. This paper explains how to create PSpice model by its normal parts to simulate a non-linear winding with magnetic core, with a flux switch, the model take into account factors such as saturation, hysteresis and the power losses caused by frequency. By change some pellucid parameters, this model can work in different frequency. This paper also gives some practive examples.