RE: [TCML] 10 amp ballast

["Richard Schmuke" <rdj@xxxxxxxxxxxx>]

Scott, I am not expert or even have electrical background but I needed one
also. I took a roll of 12ga wire  and if you look at the spool you will see
the plastic hole can be enlarged. The wire wrapping part is larger than the
end hole. I made the hole as large as I could. Mounted it on a square of
plywood , on two sides added vertical walls and made a top shelf. Took a
piece of threaded rod that went down thru the top board into the spool,
filed the space in the core wire iron wire around the threaded rod held in
place with plane old bailing wire. With a wing nut on top it made a
adjustable ballast for my 200ma 15Kv plate transformer used for my coil.

Rich , Kd0zz

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Scott Bogard
Sent: Saturday, August 04, 2012 11:13 PM
To: Tesla Coil Mailing List
Subject: [TCML] 10 amp ballast

Greetings all,
      Wondering if anyone has any "instructions" of sorts for a good 10 amp
240V ballast that will last long runs.  I know 10 amp seems kind of small
for a power supply needing ballasting, but my idea is to stack four of them
in parallel to A. dissipate heat better, and B. to allow for some variable
power in the stead of a variac...  I was thinking the welding rod approach,
maybe a 1.5 inch PVC pipe, 2 feet long wrapped with x turns of 14 AWG...
Just not sure ballpark how many turns to use, of how much heat that will
generate, hence what kind of cooling I will need for say 10 minute runs.
Input is appreciated!

Scott Bogard.
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