我有一个液晶显示器电源,控制电路是UC3842,初次级之间只有一个光电耦合连接着,请问该如何提高其输出电压?改变开关管基极电阻可行吗?不过我还是想从UC3842上面入手,最好能实现小范围的连续可调.
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