一、构造及其工作原理光电耦合器是把发光器件与光敏接收器件集成在一起(或用一根光导纤维把两部分连接起来)以实现信号传输作用的器件。通常发光器件采用发光管(LED),光敏接收器件则采用光敏管等。当信号加在光电耦合器的输入端时,发光管发光,光敏管受光线照射而导通,输出相应的信号,实现了光电的传输和转换。其主要特 First, the structure and working principle Optocoupler is the light-emitting devices and photosensitive receiving devices integrated together (or an optical fiber to connect the two parts) in order to achieve the role of signal transmission device. Usually light-emitting devices with light-emitting tube (LED), photosensitive devices are used light-sensitive tube. When the signal is applied to the optocoupler input, the LED light, light-sensitive tube light and conduction, the output of the corresponding signal, to achieve the photoelectric transmission and conversion. Its main special