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Re: Stats of my new capacitor
Tesla List wrote:
>
> Original Poster: Aric_C_Rothman-at-email.whirlpool-dot-com (Aric C Rothman)
>
> I just finished taking readings of a new stack plate capacitor I
> built. I used a Quadtech precision LCR meter to take these
> measurements.
>
> C = 42.5 nF
> DF = 0.0000759
> ESR = 818.73 microohms
>
> all measurements were taken at 100 kHz.
>
> The capacitor is made of styrene and Al foil (Reynolds Wrap Heavy
> Duty). There is a 1 1/2" guard region around each foil. The styrene
> layers are 9"x13" and consist of two 20 mil sheets between each foil.
> The stack is sandwiched between 1/4" sheets of lexan and tied together
> with nylon straps.
>
> I'm constructing a vacuum tank of 3/8" Lexan. I will immerse this cap
> (and its soon to be born siblings :) in this tank, one at a time,
> under oil. After degassing under vacuum, the caps will be transferred
> to a epoxy coated wooden box, which will be filled with oil.
>
> Has anyone had success/problems constructing a vacuum chamber out of
> solvent welded pieces of polycarbonate/acrylic/etc. Also, what kinds
> of terminals have capacitor builder here used in their homemade units?
>
> Aric
>
>
I have had miserable luck with acrylic plastic containers. I have not
built one yet that did not seep oil. Your best bet is to use the epoxy
coated wooden box. If you build it right (make sure you seal ALL of the
cracks before applying a couple of coats of epoxy) it won't leak until
doomsday.
Frankensteins Helper
Max