什么是齐纳二极管?
A Zener diode is a type of pn junction diode. Zener diodes are used in the breakdown region (yield region) by applying a voltage in the opposite direction to normal pn junction diodes.
不同于其它二极管，齐纳二极管用于反向偏置状态（阴极上的正电压高于阳极的正电压）。齐纳二极管允许当电压高于齐纳电压时，所谓的齐纳电流以相反方向流动。
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