Re: Question

[Hans-Bernhard B. <br...@ph...>]

On Tue, 13 Apr 2004, Justace Clutter wrote:

> f(x, Ia) = I*(exp( (e*(x-Rth*Ia))/(k*T)  )-1)
> I = -2.5E-5
> 
> fit f(x,y) '742_743' using (-1*($5-$7)):(-1E-6*(($4+$6)/2)) via I
> 
> 
> So, the question is, I want to solve for the diode current but I need to
> know the current to see how much voltage is lost in the resister.  Is
> this possible?

Your explanation is too incomplete to allow a definite answer. In
particular I can't see what your words have to do with the formula you're
showing.  I guess you'll have to take a couple of steps backward and find
out what exactly it is you're trying to do here.

*) What's actually in that datafile?
*) What's the meaning of x, Ia and I, respectively?
*) As given the dependence of f(x,Ia) on I is quite trivial.  There
should be no problem at all fitting that to a dataset of x and Ia
values to extract a value of I.

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.