本文描述了一个窄脉冲峰值电压的测量方法。该电路采用一个有前置放大器的脉冲延长器电路。这个放大器用来减小脉冲延长器电路的充电时间常数,以改进该电路的快速性能。一个使用微波晶体管放大器的实验电路,能够检测一个持续时间为14ns那么短的脉冲。该仪表的指示值可以很方便地用A/D和D/A转换器保持不变,直至A/D转换器复位为止。 This article describes a narrow pulse peak voltage measurement method. This circuit uses a pulse extender circuit with a preamplifier. This amplifier is used to reduce the charge time constant of the pulse extender circuit to improve the fast performance of the circuit. An experimental circuit using a microwave transistor amplifier can detect a pulse that lasts as short as 14 ns. The instrument's indicating value can be easily maintained with the A / D and D / A converter until the A / D converter is reset.