光耦合器问世于1966年,由于它具有独特的优点,近年来发展很快,在各种电子设备中迅速得到了广泛应用,已显示出强大的生命力.由于光耦合器的输入与输出间相互隔离、信号传输具有单向性等优点,因而具有良好的抗干扰性能及高的共模抑制比,所以被广泛应用于计算机及其它各种整机中.光耦合器的发光端与光敏端之间具有隔离性能又具有线性传输性能,因此,它在代替变 Optical coupler came out in 1966, because of its unique advantages, its rapid development in recent years, has rapidly been widely used in various electronic devices, has shown great vitality.Because the optocoupler input and output between each other Isolation, the signal transmission has the advantages of one-way, which has good anti-jamming performance and high common-mode rejection ratio, it is widely used in computers and other various 整机. Light coupler and light-sensitive end Between the isolation performance and linear transmission performance, therefore, it is in place of change