Re: SISG first sparks!

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Mr Gregory Peters <s371034@xxxxxxxxxxxxxxxxx>

Hi Terry,

At last, some sparks - something a simple mind like mine can relate
to, and no technical mumbo jumbo! Hehe. Just wondering what the
appearance of the sparks is like. Are they like a conventional SG
coil, with jagged streamers, or the more like the brushy fiery sparks
of an SSTC? Nice work!

Cheers,

Greg Peters
Department of Earth Sciences,
University of Queensland, Australia
Phone: 0402 841 677
http://www.hot-streamer.com/greg2



----- Original Message -----
From: Tesla list <tesla@xxxxxxxxxx>
Date: Saturday, May 13, 2006 10:52 am
Subject: SISG first sparks!
> Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
>
> Hi,
>
> I wired up some odds and ends and put the gap on a coil:
>
> http://hot-streamer.com/temp/SISG-006.jpg
> http://hot-streamer.com/temp/SISG-007.jpg
> http://hot-streamer.com/temp/SISG-008.jpg
>
> The firing voltage is 1800V and it is running about 60BPS.  The
> arc
> to ground is 5 inches.
>
> The coil is 150kHz and the primary cap is 150nF so the bang energy
> is
> 0.243 Joule.  So its about 14.6 watts.  The old IGBT got just
> barely
> warm and the new one stayed cool (no heatsinks).
>
> This system was very far from optimal, but it did make nice sparks
> with the new gap ;-))  When I get a lot more IGBTs, I can run it
> at
> 100 times the power ;-)))
>
> Cheers,
>
> 	Terry
>
>
>