UC3842通过RTCT来产生三角波,那么如何从外部改变他的占空比呢?这个三角波有什么作用呢?
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Hi
RC震荡是用于产生恒定频率的CLK(或周期), 而在这个周期里芯片comp脚分压将和Isesen脚三角波切割形成占空比。