Re: function

Roger Stafford — Tue, 08 Jan 2008 00:59:04 -0500

"J V" <vlchsjstn@yahoo.com> wrote in message <flugn6$quj
$1@fred.mathworks.com>...
> function Is = h()
>
> g()
> Is = (Ae*q*Dn*(Ni^2))/(Na*W);
>
> return;
>
> function [Ae q Dn W Ni Na]=g()
> Ae = input('cross-sectional area of the base-emitter
> junction(in the direction perpendicular to the page? (Ae
> cm^2) ');
> q = input('magnitude of the electron charge? (q
> Coulomb) ');
> Dn = input('electron diffusivity in the base? (Dn
> cm^2/s) ');
> W = input('effective width of the base? (W cm) ');
> Ni = input('intrinsic carrier density? (ni 1/cm^3) ');
> Na = input('doping concentration in the base? (Na
> 1/cm^3) ');
>
> return;
>
> why does this function giving me an error?
-------
You haven't brought in the six variables in your call to g(). It should be:

[Ae, q, Dn, W, Ni, Na]=g();

The function 'h' doesn't know these variables' values unless you do.

Roger Stafford

function

J V — Tue, 08 Jan 2008 00:39:02 -0500

function Is = h()

    g()
    Is = (Ae*q*Dn*(Ni^2))/(Na*W);

return;

function [Ae q Dn W Ni Na]=g()
    Ae = input('cross-sectional area of the base-emitter
junction(in the direction perpendicular to the page? (Ae
cm^2) ');
    q = input('magnitude of the electron charge? (q
Coulomb) ');
    Dn = input('electron diffusivity in the base? (Dn
cm^2/s) ');
    W = input('effective width of the base? (W cm) ');
    Ni = input('intrinsic carrier density? (ni 1/cm^3) ');
    Na = input('doping concentration in the base? (Na
1/cm^3) ');

return;

why does this function giving me an error?

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Re: function

function