Miniaturized magnetic pulse compression circuit having function of automatic control has been developed. In the circuit, discrete semiconductors were connected in series-parallel, mutually for increasing the switching capacity. The pulse width of output voltage decreased by optimizing the primary windings and line length. The developed power supply was operated at an output voltage of 31.2kV, an energy efficiency of 86.9%. The automatic control of output voltage could be realized by feedback control using PIC (Peripheral Interface Controller). The output voltage was changed following the voltage setting value and the time to reach a target voltage was shorten by increasing the operation frequency.
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