盘式触发电极触发管开关的触发特性

Trigger characteristics of new trigatron with discal trigger electrode

对采用盘状触发电极的新型触发管开关的触发特性进行了实验研究,得到不同极性组合、不同触发电压幅值和不同触发电流条件下开关的触发特性实验结果。实验结果表明:新型触发管开关获得最佳触发特性所需的极性组合应为异极性组合,触发电压幅值范围为自击穿电压的30%～50%,为兼顾触发电流和保护触发器,触发电阻值应为50～100Ω,验证了触发管开关击穿机制的已有认识。

A new trigatron with a discal trigger electrode has been tested on its trigger characteristics. And the effects of different polarity combinations, trigger pulse amplitudes and trigger resistances on trigger characteristics of the trigatron have been derived. Then the breakdown mechanism was introduced to explain the results. It is found that the optimum polarity combination is heteropolarity and the best scope of the ratio between trigger voltage and self-breakdown voltage is 30%-50%. The appropriate trigger resistance is 50-100 Ω to achieve large current considering the safety operation of the trigatron.