Re: rolled cap blowew out

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "david baehr" <dfb25@xxxxxxxxxxx>


Fire that baby up , I wanna know how it holds up !! :-)

From:  "Tesla list" <tesla@xxxxxxxxxx>
To:  tesla@xxxxxxxxxx
Subject:  Re: rolled cap blowew out
Date:  Tue, 28 Feb 2006 21:53:32 -0700
>Original poster: Chris Estes <estescc@xxxxxxxxxxxx>
>
>
>
>> >
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>I've just finished an interesting design thats yeilded about 6.7 nf
>with I'm guessing 50 Kv strength. Its a stacked plate cap that uses
>corrugated cardboard and mineral oil for the dielectric. I place 2
>pieces of cardboard between each plate to give about 250 mil (3/4
>cm)
>spacing. All the pieces of cardboard are oriented so that when
>looking
>down on the stack you can see through the corrugation if that makes
>sense. then i place the stack in a container and fill it with oil.
>The
>orientation of the cardboard lets the air bubbles flow up and out
>quite
>nicely. The most expensive component is all the oil and, I believe,
>they will have a 'self healing' quality. If theres a puncture, all I
>need to do is shake it around to jostle the oil a bit. The
>dimensions
>are about 20cm by 35 cm by 35 cm for, as I said, about 6.7 nf. If
>you
>wanted more farads in less space then you could probably just use
>one
>layer of cardboard but I just needed about 7 nf for my NST resonant
>condition and wanted to be sure about the dielectric strength. I
>haven't tried this out yet as I'm still building the rest of my coil
>but I can't see any serious flaw in my design so far. Good luck and
>happy coiling.
>
>