# PN junction: Calculate the change in diode voltage that will cause a factor of 10 increase in current.

Consider an ideal pn junction diode at T=300K operating in the forwared bias region. Calculate the change in diode voltage that will cause a factor of 10 increase in current.

Â© BrainMass Inc. brainmass.com February 24, 2021, 2:17 pm ad1c9bdddfhttps://brainmass.com/physics/voltage/11300

#### Solution Preview

The ideal diode equation is:

I=Is*[exp(q*Va/n*k*T)-1] ;

where Is=saturation current; Va=applied voltage; T=temperature; n=diode ideality factor =1.

In forward bias, the Exponential Term dominates, so we can neglect the factor in ...

#### Solution Summary

With good explanations and calculations, the problem is solved.

$2.19