More cap questions I couldn't answer . . .

[media at mail1.nai.net]

At 12:46 PM -0700 05/08/98, Eric at Svetlana Electron Devices wrote:

>I can refer list readers to makers of super-premium film
>capacitors if desired. (Be warned--values above 2 uF are
>usually somewhat bigger than a bumblebee......more like a
>giant rhinoceros beetle......)

OK :)  I'll hold off posting the new Cap FAQ.  What we need are sources for
teflon, oil filled and polystyrene caps.  Although "super premium" might
mean super expensive, it doesn't any sources listed for caps with these
dielectrics.  I've already checked Allied, Mouser and Digikey -- they don't
carry them.

Anyway, while I'm at it  . . .

A few weeks ago, I had added the following questions as notes to myself in
this entry in the original FAQ.  Since then I haven't found an answer.

> POWER SUPPLY CAPS - For the cap between the diodes and the regulator,
> use a cap rated to 105 degrees C. They are only slightly more expensive
> (pennies) than the 85 deg. C types, but much higher quality.  For the
> output caps on 3-terminal regulators, use a 1, 2.2 or 3.3uf tantalum
> [**WHY TANTALUM??  WHY NOT ELECTROLYTIC OR SOMETHING ELSE??**] in
> parallel with a 0.1uf ceramic.  [**AGAIN, WHY CERAMIC??**]

I'd just hate to include any advice that I can't explain.

THANX!!

PEACE OUT :)
MARK