[sdiy] ASM Capacitors/Bench Power Supplies

[Magnus Danielson]

From: Scott Gravenhorst <music.maker at gte.net>
Subject: Re: [sdiy] ASM Capacitors/Bench Power Supplies
Date: Thu, 31 Jul 2003 14:20:57 -0800

> Ian Fritz <ijfritz at earthlink.net> wrote:
> >At 01:46 PM 7/31/2003, Neil Johnson wrote:
> >>Ian,
> >>
> >> > >In general, ceramics is bad due to leakage, memory effects, tempco etc.
> >> >
> >> > Well, these are the words we always hear, of course, but what are the
> >> > numbers???
> >>
> >>Bob Pease's article:
> >>
> >>         http://www.national.com/rap/Application/0,1570,28,00.html
> >>
> >>Neil
> >
> >This shows NP0 and polystyrene as very similar.  And much worse than other 
> >ceramics.  As far as mica ... I understand that it depends on the quality 
> >(source) of the mica itself.
> >
> >   Ian
> 
> Egad, I never thought about it, but mica is a natural material that can vary
> in composition...  Any clues as to what may be good/bad?  Mfr?  Country of
> Mfr (due to bad mining sources)?  Or is it worse in that a run of caps could
> be fine except for the 5 I got?

Well, this is the little supprise that Carl Fredrich Gauss have had in store
for you all these years...

Cheers,
Magnus - who's first names are Carl Fredrik ... coincidence you might ask? >:-]