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光电耦合器在彩电、DVD机、录放像机、计算机等开关电源中广泛采用的一种新型半导体器件,它具有体积小、功耗低、工作相对稳定、电路简洁等优点,内部电路如图1所示。同时依据光电耦合器的作用原理,在各开关电源中其身兼数职:(1)利用光电耦合器的导通与截止可作电子开关使用,以取代前些年继电器在遥控家电中做待/开机的转换器件;(2)光电耦合
Optocoupler in the color TV, DVD players, recorders, computers and other switching power supplies widely used in a new type of semiconductor devices, it has small size, low power consumption, the work is relatively stable, the circuit is simple and so on, the internal circuit shown in Figure 1 Show. At the same time based on the principle of the role of optocouplers, in the body of the switching power supply and its several functions: (1) the use of optocoupler turn-off and cut-off can be used as an electronic switch to replace a few years ago relay in the remote control appliances do / Boot conversion device; (2) optocoupler