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光电耦合器件是一种光电结合的新型电子器件，有很好的抗干扰性能。在介绍几种光电耦合器件的性能和工作原理的基础上，对光电耦合器件应用在脉冲电路和线性电路中的电路设计作了探讨，提出了设计方法。最后介绍了几种用光电耦合器件构成的典型电路。
Optocoupler device is a new type of electronic combination of optoelectronics, has a good anti-jamming performance. On the basis of introducing the performance and working principle of several kinds of optoelectronic devices, the design of the optoelectronic devices used in the pulse circuit and the linear circuit is discussed. The design method is put forward. Finally, several kinds of typical circuits composed of opto-electronic devices are introduced.