Re: gEDA-user: High speed decoupling

[Karel Kulhavy <clock@xxxxxxxxxxxxx>]

On Sun, Mar 12, 2006 at 06:14:54PM -0700, John Doty wrote:
> 
> On Mar 12, 2006, at 3:59 AM, David Hart wrote:
> 
> >
> >I was particularly impressed in this webinar, and the subject of  
> >thermal
> >noise generated by resistors in an analog circuit. I'd forgotten that
> >resistors with higher values contribute more thermal noise.
> 
> Depends on whether noise voltage or current is the dominant effect in  
> that part of the circuit. Bipolar transistor current mirrors are  
> noisy, but adding large emitter resistors makes them quieter...

What if you block the BE junction with a capacitor instead? Does it
decrease the noise too?

CL<
> 
> John Doty              Noqsi Aerospace, Ltd.
> jpd@xxxxxxxxxxxxx
>