Re: Craig's SGTC (plus SSTC)

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Brian" <ka1bbg@xxxxxxxxxxxxx>

Hi, and the pictures and writing is first class too! cul brian f.

----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Sunday, July 10, 2005 2:15 PM
Subject: Craig's SGTC (plus SSTC)


> Original poster: "Craig Dunn" <craig_d73@xxxxxxxxxxx>
>
> Hi,
>
> I've just started to get decent streamers from my first SGTC so I thought
I
> would post the results.  The setup is:
>
> * 4 MOT Stack Power Supply (no oil)
> * Inductive Ballast (limits current draw to 10A).
> * 80nF MMC (was originally beer bottles).
> * Asynchronous Rotary Spark Gap
> * 110mm Diameter Secondary (1000 turns 0.55mm wire).
>
> At the moment I'm getting streamers which are over 1 meter long.  I've
only
> just started tuning the coil, so it's not performing at it's best yet, but
> I seem to get good results with around 2 turns on the primary.  My
original
> calculations led me to believe that best results would be between 3 and 4
> turns on the primary, but this doesn't seem to be the case.
>
> Pictures of the coil and it's streamers can be found on my website
> (www.craigsarea.com/sgtc.html).  Scroll to the bottom of the webpage for
> streamer pictures.
>
> Previously I made a SSTC, which is also on my website
> (www.craigsarea.com/sstc.html).  I really like the robustness of spark gap
> coils.  An out of tune spark gap coil just results in poor performance,
> whereas an out of tune solid state coil often results in having to
desolder
> the MOSFET's.  I also think the streamer behaviour of spark gap coils is
> more pleasing than solid state coils.
>
> Hope you like it,
>
> Craig.
>
>
>
>