开关脉冲发生器输出的稳定性是影响大口径电光开关可靠性的关键因素,而输出脉冲的触发延时和抖动则是其稳定性的两大重要指标。利用国产VE-4073氢闸管进行了分析和实验研究,通过采用直流加热氢闸管灯丝和氢储存器,以及精确、稳定的双脉冲触发技术,大幅减小了开关脉冲发生器触发延时的抖动和漂移,48 h内开关脉冲发生器输出漂移仅6.1 ns。 Switching pulse generator output stability is the key factor affecting the reliability of large-diameter electro-optic switch, and the output pulse trigger delay and jitter is its stability of the two important indicators. The domestic VE-4073 thyristor was analyzed and experimentally researched. By using the direct current heating thyristor filament and the hydrogen storage, and the accurate and stable double-pulse triggering technology, the delay of the switching pulse generator Jitter and drift, switching pulse generator output drift within 48 h only 6.1 ns.