Re: BJT transistor beta, vs Ebers-Moll, Gummel-Poon, and the other tools God has given us

From: Active8 (reply2group_at_ndbbm.net)
Date: 12/07/04 

Date: Tue, 7 Dec 2004 06:59:25 -0500

On Mon, 06 Dec 2004 22:10:06 -0700, Jim Thompson wrote:

> On 6 Dec 2004 18:44:49 -0800, Winfield Hill
> <hill_a@t_rowland-dotties-harvard-dot.s-edu> wrote:
>
>>Jim Thompson wrote...
>>>
>>> Sorry to burst your bubble, but gm (for a BJT) is only
>>> a function of current, and NOT the size of the device.
>>
>> Right, assuming Is is constant across the devices...
>> (Someone always has to play the devil's advocate).
>
> And WHERE is it that IS figures into gm ???

          q
gm = Ie -----
          KT

so it figures into Ie 

-- 
Best Regards,
Mike