Question

A reverse biased diode is equivalent to​

Answer 1

The backward diode is a special form of tunnel diode in which the tunneling phenomenon is only incipient, and the negative resistance region virtually disappears. The forward current is very small and becomes equivalent to the reverse current of a conventional diode.

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Answer 2

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A reverse biased diode is equivalent to

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→ A reverse biase diode is equivalent to an off switch

→ When diode is reverse biased , the resistance of the depletion layer / region increase and the Current in it is also approx neglected .

→ it can be seen by the values of currents in forward and reverse biased
i.e. in reverse biased = is in micro amphere
and in forward biased. = it is in mili amphere..

i.e. a difference of 10³ values.

→ From these we can include that it is basically acting as an insulator.

→ Also the voltage difference at cathode compartment is high as compared to tha anode compartment of diode , when reverse biased and the flow of current will also affected by the electric field

→ With the higher electric field , Current does flow. involving breakdown of the diode , we can say that ,

→ A reverse biased diode is equivalent to an off switch.

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