Anyone have a
dielectric chat that they can post for me? What did you use for spacers I
wonder since plastics are a better dielectric than oils in the first place?
Tony
-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Saturday, April 14, 2007 7:21 PM
To: tesla@xxxxxxxxxx
Subject: Re: Oil Dielectric Properties
Original poster: gary350@xxxxxxxxxxxxx
I built a cap using metal plates and a fish aquarium. Cut all the
plates the same size let plates 1,3,5,7,9,etc hang over one side
about 1/4" let plates 2,4,6,8,10 hang over the opposite side connect
the edges together with a soldered wire. A spacer is needed between
all of the plates. The spacer is the number one problem because it
becomes part of the dielectric. I tried all sorts of things
polyurethane 1/8" thick worked the best for me. I tried several
different oils, Caster oil, mineral oil, 100% paraffin oil, 10 weight
hydraulic oil, High Voltage oil, BBQ grill lighter fluid. All of the
oils seems to work fine. This cap is 99.9999% bullet proof and 100%
repairable. The only problem I ever had was getting an arc along one
of the spacers and causing a carbon track on the spacer. The spacer
was replaced and the cap worked fine again. Cap is quick and easy to
build. Disadvantage is it is large and bulky.
-----Original Message-----
>From: Tesla list <tesla@xxxxxxxxxx>
>Sent: Apr 12, 2007 9:38 PM
>To: tesla@xxxxxxxxxx
>Subject: Oil Dielectric Properties
>
>Original poster: "Breneman, Chris" <brenemanc@xxxxxxxxxxxxxx>
>
>Hello,
>
>I was once again considering possible unique methods of homemade tank
>capacitor construction, and came up with this idea:
>In a jar, or some other kind of uniform container with an open top,
>place a plate of metal at the bottom. Glue the plate of fasten it to
>the bottom by some means. Then add a layer of salt to the desired
>dielectric thickness. Then add another metal plate cut so that the
>lead is on the opposite side of the container (of course the leads on
>alternating plates alternate) and glue or fasten it to the side of
>the container. Then repeat with the salt and plates until the
>container is filled. Metal plates should have some kind of opening
>in them, either a drilled hole or a space left for the opposite leads
>on the sides of the container. After this is done, the plates should
>be stationary and fixed to the sides of the container. The salt
>could be poured out or dissolved with water, and the container could
>be filled with a liquid dielectric, such as oil. Such a capacitor
>would be self-healing, always a useful trait.
>Anyway, I was wondering what the dielectric properties of various
>kinds of oil are at high frequencies to determine whether a capacitor
>constructed in such a way would be feasible for Tesla coil
>use. Also, if anyone sees any general design problems with this,
>suggestions are of course welcome.
>
>Thanks,
>Chris
>
>