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电源是众多家用电器的能量供给部件,绝大多数影碟机出厂时都不附电源电路图,电源电路又很容易出现故障。笔者画出万利达N28、N30 VCD机的电源电路图及各元件参数。另外,对易损难购元件给出代换方法,供广大读者检修代换时参考。当PQ05四端稳压器损坏后,如无原配件,可用F3封装的金属三端稳压器LM7805K代换,LM7805K外观和金属壳大功率三
Power is the energy supply components of many home appliances, the vast majority of DVD players are shipped without the power circuit diagram, the power circuit is very prone to failure. I draw Malata N28, N30 VCD machine power circuit diagram and the various component parameters. In addition, the replacement of vulnerable components purchased substitution method for the majority of readers reference replacement substitution. When the PQ05 four-terminal regulator is damaged, if no original accessories, available F3 package of metal three-terminal regulator LM7805K substitution, LM7805K appearance and high-power three metal shell