Auxiliary Power Supply for a Semiconductor-based Marx Generator

An auxiliary power supply for stages of a semiconductor-based Marx generator has been designed and tested. The auxiliary power supply converts the Marx generator's stage voltage ranging from 50 V to 1000 V to stabilized voltages of 7 V and 18 V at a total output power of up to 1.5 W. It comprises a transformer for insulation between input and both outputs and features a flyback converter design. The on-time of the MOSFET switch has been designed to vary between approximately 1 µs and 20 µs depending on the generator's stage voltage. The power supply has been tested successfully in an 8-stage Marx generator.