[sdiy] Non-polar cap poll

[harrybissell]

I lika....

I usually use mica for critical pf values. Its nice and stable, pretty low
in dielectric absorption, and pretty temp stable.

Usually the larger capacitance values are very large, physically... and
mica is expensive.

I LOVE mica for really high current applications like snubber caps on
high power inverters... maybe 1600V rating and all the current you can
possibly eat (with a cap that big).  But for synth-diy I wouldn't go over
maybe 470pF and 100V.  Usually I like mica for 100pF or less...

H^) harry

Michael Schulze wrote:

> How do you guys feel about mica?
>
> > From: harrybissell at prodigy.net
> > Date: Fri, 17 Jan 2003 08:02:57 -0800
> > To: madhun2001 at yahoo.com
> > Cc: synth-diy at dropmix.xs4all.nl
> > Subject: Re: [sdiy] Non-polar cap poll
> >
> > I vote for Polystyrene in the tightest tolerance I can
> > get for the ladder filter. I used 2%.
> >
> > For phasers I'm less fussy... I don't care about the precision
> > of the "swoosh".   Usually I go with polyester (Mylar) but I did
> > one in polystyrene 1% and it was much better.
> >
> > H^) harry
> >
> > --------Original Message--------
> >
> > From: madhun2001 at yahoo.com
> > To: "synth-diy at dropmix.xs4all.nl" <synth-diy at dropmix.xs4all.nl>
> > Sent: Jan 16 2003 23:32
> > Subject: [sdiy] Non-polar cap poll
> >
> >> Hey all,
> >> Query: what kind of capacitor do you prefer for use in
> >> filters?  I'm starting my ladder filter and ladder
> >> phasor and am wondering what to use.
> >> Thanks!
> >> --tim
> >> __________________________________________________
> >> Do you Yahoo!?
> >> Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
> >> http://mailplus.yahoo.com
> >
> >
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > Powered by Wild On Web:
> > Free POP Mail Access - Access your E-mail from Anywhere in the World!
> > http://www.wildonweb.com
> > |Awards|Money|Bank|Credit|Dating|Games|Jokes|Vitamins|Magazines|Diet|
> > |Bookstore|News|Babies|Cards|Homepages|Hobbies|...