Original poster: Karl Lindheimer <karl@xxxxxxxxxxxxxxx>
Hi Terry B.,
I found you photos interesting, and you have given me an incentive to
perhaps one day wind a "banded" primary. One thing though. You spaced
the flat bands apart using sticky tape, or foam weatherstripping? Did you
ever have any problems with flashover between bands? I would imagine that
if the foam ever became carbonized due to a streamer hit, or inter-turn
arcing that your primary would be ruined, and need to be re-wound. How
has it held up so far?
Curious,
Karl
On Feb 24, 2005, at 9:39 AM, Tesla list wrote:
Original poster: "Terry Blake" <tb3@xxxxxxx>
Hi Tyler,
I'm not sure about copper banding, but I have used a spring-bronze
weatherstrip and a 0.25" thick polyethylene foam strip (sticky on 1 side) to
make a few primaries. The spring-bronze weatherstrip is 1.25" wide and
about 0.01" thick. It is the same stuff used to seal around doors.
I like
it better than copper, because it does not kink, and is very springy.
Here is a link to my HUGE Tesla coil that used such a primary for up to
7.5KVA. It put out 9 foot streamers.
http://www.tb3.com/tesla/hugecoil/primary/primary.html
Here is a link to a smaller primary and shows how I was able to construct it
by myself in 30 minutes.
http://www.tb3.com/tesla/oil/mini/primary.html
<<SNIP>>
Enjoy.
Terry Blake
Coiling in Chicago.
http://www.tb3.com/tesla/index.html