At 05:09 AM 7/31/2001 -0700, Bill Turner wrote:
> >> It seems, on the surface, that one could dip a small air variable in
> >>(pure) water and have a high voltage part with 80x the capacity of the
> >>original.
> >>
>
>_________________________________________________________
>
>Or, if not water, some non-conductive liquid. Don't have a dielectric
>chart handy, but there must be something suitable.
>
>Interesting thought.
Transformer oil (or nearly any mineral oil) would work quite well. The
dielectric constant typically is just over 2.0, and the voltage insulating
characteristics are excellent. A good application would be for the tune
cap on 160 or 80 meters : a 150 or 200 pf, 1000V air variable would become
a 300 or 400 pf HV variable cap.
Phil
>Bill, W7TI
>
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