发布时间:2025-02-07 18:59:06
1直接买个开关电源或成品,50元左右,2买变压器二极管电容等电子元件回来自己做,变压器降压整流滤波得到,3用阻容降压整流滤波稳压实现。4复杂点自己做开关电源得到
急急跪求彩钢板与净化板优缺点以及他们的区别实验室装修采用那种材质比较好
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