介绍了RC展宽电路工作原理、稳定工作的条件、防交互干扰措施、窄脉冲宽度τ1 =τ2 的选择原则,分析了RC展宽 电路顶降产生的原因和不可消除性、RC时间常数与脉宽τ的比例关系以及负偏压保存的条件,讨论了铁芯Sc的选择原则 和采用平衡变压器的可行性,并提出一种新型的R+VS2 加速网络和更为简化的RC展宽电路。

Firstly, working principle of RC expanding circuit, condition of stable working, measures of preventing cross interference, and principle of selecting narrow pulse τ1 =τ2 are introduced in this paper. After that, the paper analyzes the generating reason and irremovability of top drop for RC expanding circuit, the proportional relationship between RC time constant and pulse width, and the condition to preserve negative bias voltage are analysed. Finally, selection principle of iron core Sc and the feasibility of adopting balanced transformer are discussed, and a novel R+VS2 accelerating network and more simplified RC expansion circuit are presented.