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我用UC3875移相的时候,为啥移相角不会随阻值的改变而移相?
请详细描述你的现象,你说的阻值是什么意思?请问详细看过UC3875的技术规格书了吗?
阻值??移相角随EA电压和SS脚电压变化。
你改变哪里的阻值啊?