Question

Draw and explain VI Characteristics of PN Junction diode. Write current equation of PN Junction

Answer 1

VI properties of PN junction diode in forward bias are non-linear i.e. curved line.  

When forward bias is given to the diode then a low impedance path allows to conduct a large current which is known as infinite current.

Diode equation gives an impression for the current through a diode as voltage function.  

Ideal Diode equation is:

    I = Io(e q/v/kt - 1)

Where I = Gross Current,

Io = "Dark saturation current",

V = Applied voltage at the ends,

q = Perfect value of electron charge,

k = Boltzmann's constant and T = Correct  temperature (K).