From Wikipedia, the free encyclopedia
二極管(Diode)係電子零件,多數只係得兩個駁位駁電。二極管駁入電路,電子只可以向一個方向行,唔畀倒轉來行。
最理想嘅二極管係,順行可以一跳跳到最高電流,而逆行即刻一啲電流都無。不過現實嘅通常做唔到咁理想。
二極管最初係正負兩個電極嘅真空管,所以叫二極管。不過家下大部份都變晒原子粒,用晒半導體來做。
二極管有好多種,有啲重會發光㖭。
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