High-voltage pulse generator based on pulse transformer and pulse forming net

To test character of ZnO ceramics resistor undergoing high-voltage, a high-voltage pulse generator whose output pulse is approximately square and voltage amplitude varies between 10-80 kV was designed adopting pulse transformer and pulse forming net (PFN). The article introduces the principle, simulation, circuits of the high-voltage pulse generator, and elaborates output states of the power supply with a standard ZnO load. Test results show that the fall on the top of the waveform is less than 3 percent, the pulse top fluctuation is less than 1.5%, and pulse rising edge and falling edge all meet the requirements. The results show that the high voltage pulse source can be used for performance testing of ZnO ceramics.