真空触发管是一种高电压，大电流快速脉冲开关。它具有耐高压、体积小、无噪声、快速点燃和快速恢复等优点。广泛应用于电容器组放电装置。激光系统中作高压，高重复频率的脉冲开关等。

The vacuum trigger tube is a kind of fast pulse switches applicable for high voltage and current.It offers a number of advantages,such as high with stand voltage,small in size.no noise,fast ignition and fast recovery,etc.So,it is widely used as the HV,frequently-operated,pulse switch in the discharge units of a capacitor bank and the laser systems.