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本文提到了抗干扰技术中使用的四种隔离器件，重点介绍了用于传输模拟信号的几种线性隔离电路；分析了电路的特点和工作原理，最后阐述了模拟电路中应用光电耦合器要注意的几个问题。文中指出，在任何光电耦合器的传输特性中都存在线性段；只要合理地设计电路，使光电耦合器工作在线性段内，并选择合适的工作点，在模拟电路中利用普通光电耦合器就能收到令人满意的效果。
This article referred to the four anti-jamming technology used in the isolation device, focusing on the transmission of analog signals for several linear isolation circuit; analysis of the circuit characteristics and working principle, and finally elaborated on the application of analog optocouplers should pay attention to Several questions. It is pointed out that there is a linear section in the transmission characteristics of any optocoupler. As long as the circuit is designed reasonably so that the optocoupler works in the linear section and the suitable operating point is selected, the common optocoupler is used in the analog circuit Can receive satisfactory results.