Rectangular pulse sharpening of high voltage pulse transformer based on magnetic compression switch technology

In this paper, the method of reducing the rise time of high-voltage pulse transformer output rectangular pulses using a magnetic compression switch has been studied. An equivalent circuit consisting of pulse transformer and magnetic switch was used to describe the behavior of a transformer operating with magnetic switch. Meanwhile, four simplified equivalent sub-circuits and corresponding differential calculation models were used to analysis the influence of the magnetic switch module on the waveform characteristics of load resistance. The simulation and experiment results showed that the rise time of rectangular pulses could be reduced from more than 1 μs to less than 150 ns while keeping pulse duration constant which was considered as the principle of rectangular pulse sharpening. Moreover, the pulse waveform performance on load resistance was determined by the pulse transformer, magnetic switch module and their coupling effects.