SV: [sdiy] Re: Selecting Components

[karl dalen]

thermal noise in a resistor is "very" small!

KD

--- Tonelismulas V <tonelismulas at gmail.com> skrev:

> 1/4w vs 1/8 vs SMD...
> Does the resistor mass have any relation to the resistor noise?
> I mean, is 1W resistor (1K 1% metal film) noisier than a 1/8W
>  (1K 1% metal film) one?
> 
> Maybe a stupid question... but always wonder about this.
> 
> Victor T
> 
> On 9/7/06, Ingo Debus <debus at cityweb.de> wrote:
> >
> > Am 06.09.2006 um 21:20 schrieb PLEASE-NO-CC-Roy J. Tellason:
> >
> > > On Wednesday 06 September 2006 03:03 pm, Ian Fritz wrote:
> > >> At 12:37 PM 9/6/2006, Roy J. Tellason wrote:
> > >>> No they're not,  they're too damn small!  The smaller the part
> > >>> the more
> > >>> difficulty I have with these large hands,  not to mention that it's
> > >>> getting harder for me to see the damn things!
> > >>
> > >> Well, no argument on that part!  Also the colors always seem
> > >> unclear, so
> > >> you need a good strong light source to read them.
> > >
> > > Yeah,  that too...
> > >
> > > I have a magnifying glass sitting on my desk,  a slightly stronger
> > > one sitting
> > > in the drawer,  and a stronger one yet in a bag in there,  plus one
> > > of those
> > > illuminated magnifying lamps handy.
> >
> > I don't quite understand... are you talking SMD or leaded parts?
> > I find that for leaded resistors the size of the body doesn't matter
> > that much, I grab them by the leads anyway.
> >
> > Yes, colors of metal film resistors are often difficult to read, but
> > I got a DMM with a nice big display :-)
> >
> > Ingo
> >
>