bad precision pot? BLASPHEMY

[harry bissell]

"Bob Pease buys his parts at Radio Shack" ????
Blasphemy !!!!
Well, maybe he buys his copper clad there ... :^) Harry

"Fraser, Colin J" wrote:

> > -----Original Message-----
> > From: jorgen.bergfors at idg.se [mailto:jorgen.bergfors at idg.se]
> > Sent: 10 August 1999 10:16
> > To: martin.czech at intermetall.de; synth-diy at mailhost.bpa.nl
> > Subject: Re: bad precision pot?
> >
> > >So far I've never encountered any problems with cermet 10
> > turn trimmers.
> > <>But it is true that they are not made for many thousands of
> > revolutions,
> > >the cermet film is said to suffer. They are made for
> > ocasional trimming.
> >
> > Well, the settability isn't always as good as you might
> > expect. You often have to turn quite a bit befor anything
> > happens. And if you turn too far and have to turn back, there
> > is even more "dead" travel befor the setting changes. I'm not
> > sure if the setting changes if you knock on them, but it
> > could. Read Bob Pease's book and see what he thinks about
> > multiturn trimmers...
>
> I've not noticed these problems with the multi-turn presets I use.
> I'd take multi-turn trimmers over single turn trimmers for vco scaling any
> time.
> Maybe Bob Pease buys his parts at Radio Shack...
>
> I'll need to crack a spare one open and see what's inside.
>
> Colin f