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Forums
4hv.org :: Forums :: Tesla Coils
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Salt water bottle capacitor

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Cain
Mon Oct 27 2008, 06:25AM
Cain Registered Member #624 Joined: Tue Apr 03 2007, 07:50AM
Location:
Posts: 59
just link all the bottle to every bottle opposite.. i used clear wine bottles for my second cap bank.. i make a rolled cap but the bottles out performed it by heaps they handled heaps my punishment.. from memory i got .01µF from each bottle..

there was some corona around the foils top edge.. and i also found that keeping all the foil smooth on the outside and in the bottom of the box helps improve performance by reducing surface corona.. or you could try the double salt method...

just fill bottles with salt water and sit them in a tub of salt water.. would be the same size but be very heavy and hard to move.. but easier and much quicker to make, less corona, and better capacitance per bottle as the gap is as small as possible
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oucivileng
Mon Oct 27 2008, 06:02PM
oucivileng Registered Member #1772 Joined: Tue Oct 21 2008, 05:23AM
Location: Athens, OH
Posts: 71
Here's how i did it. Haven't gotten a chance to try it yet but I'd assume that the tub of saltwater would work better than wrapping them in foil.
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oucivileng
Mon Oct 27 2008, 06:03PM
oucivileng Registered Member #1772 Joined: Tue Oct 21 2008, 05:23AM
Location: Athens, OH
Posts: 71
Ok, the picture didnt post. Here's another one. It looks a little sloppy in this pic because I was working on it, but there you go


1225130631 1772 FT56350 Dsc01737
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Tigeris
Mon Oct 27 2008, 09:46PM
Tigeris Registered Member #1656 Joined: Wed Aug 27 2008, 03:28PM
Location: Pittsburgh PA
Posts: 53
Its all good :P I dont know if i should add more bottles or not. The capacidence is .0066uf for my transformer. (from the calc. on deepfriedneon website) If each bottle is about 1-2nf i should only need 6 bottle per string. I think. i will be adding two more later tonight. Though with out a cap tester i have no idea what it is per bottle.
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Cain
Tue Oct 28 2008, 01:01AM
Cain Registered Member #624 Joined: Tue Apr 03 2007, 07:50AM
Location:
Posts: 59
i would join some off the bottles to the ones in the next line over to stop some voltage stress
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oucivileng
Tue Oct 28 2008, 02:07AM
oucivileng Registered Member #1772 Joined: Tue Oct 21 2008, 05:23AM
Location: Athens, OH
Posts: 71
will do. thanks
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