Re: streamer output - toroids vs. spheres

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: G Hunter <dogbrain_39560@xxxxxxxxx>

Yes, I have seen this before on a 1kva (2 x 9/60 nst)
4" x 24" coil using a sphere top load.  It was a 12"
globe of the Earth obtained from a thrift store for
next to nothing.  I covered it with foil stuck on with
spray glue, then burnished it with the back of a spoon
until it had a smooth, chrome-like appearance.

http://hot-streamer.com/greg/sphere.htm

Indoors in quiet air, it would periodically produce a
single, serpent-like streamer that sort of waved
around, reaching for the ceiling.  It was longer,
thicker, and quieter than regular branched streamers.
Eventually the thing would reach too far (I guess),
and break up into branched, random streamers again,
only to reform into the "serpent" again a few seconds
later.  This growth/collapse cycle would continue
indefinitely as long as the coil was energized.  Too
weird.  I wish I'd made a movie of it.

Greg

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> Original poster: mileswaldron@xxxxxxxxxxx
>
>
> It seems that everyone is using toroids as toploads
> these days. I
> admit tuning a coil with a toroid is much easier
> than tuning a coil
> with a sphere; however, there is one remarcable
> difference in
> streamer output that I have noticed. This type of
> streamer output is
> so *AMAZING* that I don't like toroids, and prefer
> spheres.
>
> What I see happen with a tuned in sphere, with
> careful and painful
> adjustments, is that I can get exactly 1 streamer
> rolling around the
> top of the ball. The streamer will eventually settle
> itself down on
> the top of the ball and start "reaching" upwards.
> The end of the
> streamer licks and curls around in a shape that I
> cannot describe,
> going inside itself in fractal looking loops. It
> will stand there
> doing this for quite some time. It is a beautiful
> site to see. My 3"
> diameter coil can project a 42" streamer upwards
> using a single 12-60 NST.
>
> This is a simple observation about topload shape
> that I hope will
> foster some interesting commentary.
>
> Miles
>
>
>


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