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Overunity Machines Forum



Cheap homemade capacitors

Started by Phil, April 08, 2005, 01:48:11 PM

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Thaelin

#5
April 11, 2005, 02:54:16 PM
   And just how many FARADS does this monster come out to be?   :o
  Not sure I would even want to be in the vecinity of it. Could turn out to be a real heart stopper.

sugra

hartiberlin

#6
April 11, 2005, 07:43:58 PM
probably only a few uF, not more.
But it could probably be used for around 500 Volts or so..
This is surely enwough to kill you !
So be careful to charge it up with high voltages !

Supercaps with Farad of capacity can only be build
with the double layers of e.g. graphite and a fluid
electrolyte !

Regards, Stefan.
Stefan Hartmann, Moderator of the overunity.com forum

ticktocking

#7
April 21, 2005, 08:36:58 PM
I was wondering if a capacitor made say 4" by 4" with 1/2 in of space between would be the same capacity as one made with pieces 8" by 4" only the 8" was folded up like a fan so it was 4" by 4" and 1/2 space between also, i think it would be the same or maybe less but i may be wrong! your thoughts on this?

dracozny

#8
April 21, 2005, 09:52:37 PM
sounds like the diagram below

___________
WWWWWW

however with the fan style you increase the chance of dielectric breakdown.
I also dont think you will gain a noticable boost in farad capacity if any

raburgeson

#9
April 26, 2005, 10:55:16 AM
I see a bit of confusion about the rolled aluminium cap so I'll tell you, the
dielectric break down is at about 92 volts and yes this thing has farads
without decimal points. We were charging them in series pairs (160 rms)
and they are very leathel use extreame caution around them.The amount
of surface area of the plates determines (along with the distance between
them) the type of charge you can apply and store. This one has a lot of
surface area. Makes them suitable for storage, and they definitely are
heart stoppers, as some people here may build one just to say they made
a cap they should downsize it and still treat it with respect. It's been brought
to my attention there are a couple of young experimenters in here who
are very serious hobbiers.I ask them to not play with this , don't make
something like this unless you have a definite use for it. For any that do
build one put in a switchable bleeder curcuit so you can discharge this
without trying to short it. (That is dangerous)
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