Need help with diode equation :(

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unclebehrooz

Joined Oct 1, 2012
2
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 :)
 
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