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二極管

一粒二極管

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。

睇埋

[編輯]
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二極管
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