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hy981
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樓主  發(fā)表于: 2011-08-17 17:43
請問(wèn)我要用20A的電流，現在選40A的固態(tài)繼電器要用散熱器嗎，選用繼電器有沒(méi)有公式的
hy981
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1樓  發(fā)表于: 2011-08-17 18:13
這樣也行的吧，我看別人都是另加個(gè)散熱器的
hy981
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2樓  發(fā)表于: 2011-08-17 23:54
是不是不管電流選的多大都要加散熱器的呢
hy981
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3樓  發(fā)表于: 2011-08-18 19:50
看來(lái)這玩意用起來(lái)也煩的，就是覺(jué)得觸點(diǎn)式的會(huì )壞，

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