(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I'm trying to calculate what voltage change will compensate for a temperature change of 1 degree for a diode.

I have set up the circuit, taken down results and plotted the graph (its non-linear). So I re-plotted it using natural logs of I, and got a straight line with a gradient. Now I'm lost as to how to answer this question.

2. Relevant equations

I= Is x (e^(eV/kT) -1)

It's the characteristic equation for V vs I for a diode.

3. The attempt at a solution

I took natural logs to get:

ln I = lnIs x (eV/kT - 0)

Then said the gradient is equal toe/kt.

But then where do I go from there?

A little push in the right direction would be great!

Thanks in Advance!

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Calculate the voltage for a diode

**Physics Forums | Science Articles, Homework Help, Discussion**