(Solved) When a reverse bias is applied to a germanium PN junction diode, the reverse saturation current at room temperature is 0.3m A. Determine the current flowing in the diode when 0.15v forward bias is applied at room temperature.

 Question :

When a reverse bias is applied to a germanium PN junction diode, the reverse saturation current at room temperature is 0.3m A. Determine the current flowing in the diode when 0.15v forward bias is applied at room temperature.


Solution :

Given Io = 0.3 * 10-6A and VF = 0.15v


The current flowing through the PN diode under forward bias is


I = Io (e^(40VF) -1) for germanium diode

= 0.3 * 10^(-6) (e^(40*0.15) -1)

= 120.73mA.


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