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Registered Member #146
Joined: Sun Feb 12 2006, 04:21AM
Location: Austin Tx
Posts: 1055
Why not use a triggered spark gap? If it worked "as advertised" it should produce "musical" tones just as a DRSSTC does (though not as cleanly, since DRSSTCs are very well controlled machines). But really, make your spark gap triggerable via ignition coil, and then just modulate the frequency of the drive pulses to the ignition coil. Thats about as close as i think you could come to modulating a SGTC. Will it actually work? That depends on your triggered spark gap and how reliable it is.
Registered Member #205
Joined: Sat Feb 18 2006, 11:59AM
Location: Skørping, Denmark
Posts: 741
All, Agee with Steve, triggered sparkgap is cool. Another way would be to use an ultra low inertia rotary. Strong motor so that it can hit that high note fast. and preloaded with a brake so that it could also go deep without undue delay. I remember someone reporting a gap like this on the Pupman list a couple of years ago.
But hey! Audio modulation is what SSTC`s are all about.
Registered Member #160
Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938
I believe another way would be to put a transformer on the ground of the secondary, and magnetiseing it with a dc audio pulse. Thereby in effect, switching the grounding of the secondary on and off. Do you think it's possible with a Tesla coil, and if so, how many turns on each to achieve the required effect?
Registered Member #316
Joined: Mon Mar 13 2006, 01:30PM
Location: Marietta, GA
Posts: 212
Maybe a low voltage (4kv or so) coil could use a simple mechanically triggered gap. A metal ball or acorn nut on an insulating standoff attached to the cone of a speaker would move up and down, closing a small gap. You would still need either a very high charging current or a very small capacitor to achieve any reasonably high frequencies.
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Audio modulated SGTC?
