Question

What is the non linear V-I relation in a P-N junction in forward bias?​

Answer 1

Answer:

Since the P-N junction diode's resistance changes according to the direction of current flow just above the zero bias, hence it is called a non linear device. The current depends on the applied voltage. The relation between voltage and current is exponential, it is expressed as

I=I

s

⎣

⎢

⎢

⎡

e

(

ηV

T

V

)

−1

⎦

⎥

⎥

⎤

where, I

s

is the reverse saturation current

η is 1 for germanium and 2 for silicon.

V is the applied voltage.

V

T

is the voltage equivalent of the temperature.

Therefore for germanium diode.

I=I

s

⎣

⎢

⎢

⎡

e

(

V

T

V

)

−1

⎦

⎥

⎥

⎤

Answer 2

Explanation:

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