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jack1009
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樓主  發(fā)表于: 2018-12-19 14:14
一個(gè)DC24V,15W的設備。
在斷電後，要能維持工作3秒。需要多大的電容??
如何計算呢??
njshenxian
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1樓  發(fā)表于: 2018-12-22 21:42
這個(gè)問(wèn)題是電子電路沒(méi)學(xué)好，電容的放電時(shí)間是tao=RC，根據這個(gè)來(lái)算，估算出電路等效電阻R來(lái)，再試下，差不多了。

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