High-Voltage Nanosecond Pulse Generator Based on DSRD Series Components

Drift step recovery diode (DSRD) has the advantages of fast switching speed, high repetition rate, and high operating current. In this paper, a circuit based on DSRD series components with a saturable pulse transformer for realizing high-voltage nanosecond output pulse is studied. According to the operating requirements of DSRD, a pump circuit is designed, which consists of a DC input voltage source, one MOSFET and a pulse transformer with boost and saturation characteristics. The circuit is simulated by PSpice software, which verifies the feasibility of the circuit. Based on the simulation analysis, the circuit experiment is implemented. The experimental results show that under the condition of an input DC voltage of 600V, the pulse amplitude on a 1kΩ resistor load is 10kV, with the rise time of approximately 18ns.