High-voltage square-wave pulse generator and method for generating high-voltage square-wave pulse

Abstract

The invention discloses a high-voltage square-wave pulse generator and a method for generating high-voltage square-wave pulse. A high-voltage DC power supply, a current limiting resistor and an energy storing capacitor in the high-voltage square-wave pulse generator are connected in series to form a loop; the cathode of the high-voltage DC power supply is grounded; an optoelectronic semiconductor switch is connected in parallel with the energy storing capacitor through a circuit which is formed by a coaxial transmission line and a load which are connected in series; the packaging shell of the optoelectronic semiconductor switch, the outer conductor layer of the coaxial transmission line and the load are grounded; the high-voltage square-wave pulse generator also comprises an auxiliary switch and a time delay control device, wherein the auxiliary switch can resist high voltage and trigger and switch on rapidly and has low on-state resistance, and the time delay control device is used for controlling the trigger time difference between the optoelectronic semiconductor switch and the auxiliary switch; and the auxiliary switch is connected in parallel with two ends of the energy storing capacitor. The square wave outputted by the high-voltage square-wave pulse generator has high pressure, adjustable pulse width and rapid falling edge change rate. The high doubling process of the carriers in the optoelectronic semiconductor switch can be terminated rapidly, the optoelectronic semiconductor switch can be forced to exit the locking working state, and the locking state lasting time can be controlled manually.

Description

technical field [0001] The invention belongs to the technical field of pulse power, and in particular relates to a high-voltage square-wave pulse generator and a method for generating high-voltage square-wave pulses. Background technique [0002] Optoelectronic semiconductor switches not only have ultra-fast rising and falling edges, but also have high withstand voltage and trigger jitter of only picosecond level, so they are suitable for generating high-voltage square wave electrical pulses. Based on opto-semiconductor switches, there are two existing methods for generating square wave pulses: [0003] (1) Use transmission line energy storage to control the high carrier multiplication process of the photoelectric semiconductor switch, so that the output waveform is a square wave (see "Acta Photonica Sinica", Volume 25, No. 2, "Acta Photonica Sinica" in 1996 "for high-voltage pulse generation system A review of photoelectric switch technology". The disadvantages are: 1) th...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-voltage square wave pulse generator, which solves the problem in the prior art that the output waveform cannot be controlled due to the photoelectric semiconductor switch being locked for a long time

Images