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Re: Craig's SGTC (plus SSTC)



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. > > > >