描述
光电耦合输出电路如图3所示。为了得到和输入同相的信号，可以采用图3(a)形式。若要求输出和输入反相，可以接成图3(b)形式。当输出电路所驱动的元件较多时，可以加接一级晶体管作为驱动功率放大，其接法如图3(c)所示。有时为了获得更好的输出波形，输出信号可经施密特电路整形。
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