图1所示是曾经发表过的一个同相积分器电路。图中IC_(1a)产生所要求的积分项,但也产生比例项的边缘效应,这是所不希望的,所以该项用IG_(1b)加以消除而只保留纯粹的积分项。但在此存在一个电位问题;若 Figure 1 shows a previously published in-phase integrator circuit. It is undesirable for IC_ (1a) to produce the required integral term, but also for the edge effect of the proportional term, so this term is eliminated with IG_ (1b) leaving only the pure integral term. But there is a potential problem here;