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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中
電容器問題(直交流)(充電?放電?)
Jun 17th 2013, 01:44

抱歉我是機械的,對於電機方面有興趣
最近再研究,遇到的問題如下:

1. 直流電接電容器,僅能充電。電子無法通過絕緣層,在絕緣層處造成絕緣材極化現象,進而達到充電效果。(這個我大致能理解)

2.但....網路上說交流可以通過電容器,這我就不能理解了,電源處的正負電不斷的切換,只是造成電容器的不斷充放電(電子流順時、逆時針不斷的來回)。電容器中間還是有"絕緣層"存在,為什麼說可以通過交流?????

抱歉,真的是初新者,請各位電機、電子科系的大師幫幫我。

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