续流二极管flyback diode),有时也称为飞轮二极体freewheeling diode)或是snubber二极体,是一种配合电感性负载使用的二极体,当电感性负载的电流有突然的变化或减少时,电感二端会产生突波电压英语Voltage spike,可能会破坏其他元件。配合续流二极管时,其电流可以较平缓的变化,避免突波电压的发生。

一个有电感负载及续流二极管的电路

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