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新聞:西門子備件6FC5158-6AX01-1HF0現(xiàn)貨二極管是電子電路中很常用的元器件，非常常見(jiàn)，二極管具有正向?qū)?，反向截止的特性。在二極管的正向端(正極)加正電壓，負(fù)向端(負(fù)極)加負(fù)電壓，二極管導(dǎo)通，有電流流過(guò)二極管。在二極管的正向端(正極)加負(fù)電壓，負(fù)向端(負(fù)極)加正電壓，二極管截止，沒(méi)有電流流過(guò)二極管。這就是所說(shuō)的二極管的單向?qū)ㄌ匦?。下面解釋為什么二極管會(huì)單向?qū)ā６O管為什么只能單向?qū)щ?？二極管是由PN結(jié)組成的，即P型半導(dǎo)體和N型半導(dǎo)體，因此PN結(jié)的特性導(dǎo)致了二極管的單向?qū)щ娞匦浴?
