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Even after the forward current reduces to zero value, a practical diode continues to conduct in the reverse direction for a while due to the

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in Power Electronics by (27.1k points)
Even after the forward current reduces to zero value, a practical diode continues to conduct in the reverse direction for a while due to the

(a) resistance of the diode

(b) high junction temperature

(c) stored charges in the depletion region

(d) none of the mentioned

I had been asked this question in unit test.

This interesting question is from Power Diodes-2 topic in portion Diodes of Power Electronics

1 Answer

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by (45.1k points)
Right option is (c) stored charges in the depletion region

To explain I would say: Due to the stored charges during the earlier current flow, even when the current reduces to zero due to some structural properties of the device, the device takes time to sweep out the stored charges.

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