发布时间:2025-01-24 08:55:14
两孔插座既要接火线,也要接零线,有开关则开关接火线,无开关随意,两极插头没有极性;
三孔插座不但要接零火还要接地线,顺序是面对插孔,地线在上,左零右火。
开关接火线。
最近想做一个简单的功放入门的那一种的电路图我2级放大那部分看不懂求高人解说
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