# Need help with diode equation :(

Discussion in 'Homework Help' started by unclebehrooz, Oct 2, 2012.

1. ### unclebehrooz Thread Starter New Member

Oct 1, 2012
2
0
Our Professor asked me to prove the equation of dynamic resistance of diode , he want me to explain him where did the equation come from !

The equation is this : $r_AC{}$ = n . $V_T{}$ / $I_Q{}$

$r_AC{}$ is dynmic resistance
$V_T{}$ stands for thermal voltage
$I_Q{}$ is the I at the operating point of diode

so if you know how it has made , please let your friend knows it too

Last edited: Oct 2, 2012