在核物理实验中,往往需要测知离子流的电量与离子流强度。比较简便的方法是用积分电路来测量电量,同时可指示离子流强度。本文所介绍的是一个实用的积分电路,其中包括直流放大,触发电路,计数电路及稳定电源等。离子流的强度由仪器上电流表指出,电量由机械记数器的数字来表示。 In nuclear physics experiments, it is often necessary to measure the ionization current and the ion current. The simplest method is to use the integral circuit to measure the power, at the same time can indicate the ion current intensity. This article describes a practical integration circuit, including DC amplification, trigger circuit, counting circuit and a stable power supply. The intensity of the ion current is indicated by the ammeter on the instrument and the charge is represented by the number of the mechanical counter.