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cailiang123
CAILIANG
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12樓  發(fā)表于: 2011-05-07 17:01
如果只是為感性負載如電磁鐵，中間繼電器等供電，可以不用加濾波電容。
yexinping
思達
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13樓  發(fā)表于: 2011-05-07 17:13
4樓說(shuō)的好，這不是很大的事嘛，不要說(shuō)得太嚴重了。
科技改變未來(lái)
知識就是讓你禿頭的力量
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14樓  發(fā)表于: 2011-05-07 20:54
20A的開(kāi)關(guān)電源要多少錢(qián)啊  
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