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There's almost no point for VTTC since you can run them CW and even just Class-A modulate the output.
Yes you can use triggered gaps and modulate the trigger rates, but fast enough quenching tends to be a problem as most triggers stay latched until current drops, limiting how short pulses can be.
Triggered SGTC? Many people have done it, but afaik the quench rate doesn't allow real music, just perhaps a few bass notes to be played.
If you mean the CW Hi-Fi modulations... lots and lots of people have done it. You just haven't seen it! CW coils get very little love since they don't make long sparks.
CW coils can play white noise if you so wish, the polyphonic limit is the modulation bandwidth of the resonator. I don't do VTTC versions myself as the equipment is far more expensive for me to import than the locally available silicon alternatives, but I've got many videos of my coils playing (non-midi) music. This is OT as far as the title of the thread goes though.
The question is more if a SIDAC TC could be or has been modulated to play simple midi-style music. That I know of, no one has tried it, but SIDAC coils were only in favor for a short period of time and were exceptionally complex in construction compared to alternatives. Their main feature being solely that there is no loud spark gap, but you get SGTC-like results.
Depending on your definition of "high" yes, because you can't control precisely when they quench. You can set the gap to a large voltage, and increase trigger voltage to allow shorter on state durations, but the wider the gap the more convection will affect the arc, the more energy wasted in the gap, and the less reliably the gap will fire. There are vacuum tube triggered gaps with high firing rates, but ablation will be a problem as well as peak power, and finding ones which quench fast enough is difficult.
Either way you won't replicate the midi music performance of a DRSSTC, if that's what you're after.
Registered Member #30656
Joined: Tue Jul 30 2013, 02:40AM
Location: UK
Posts: 208
Sigurthr wrote ...
The question is more if a SIDAC TC could be or has been modulated to play simple midi-style music. That I know of, no one has tried it, but SIDAC coils were only in favor for a short period of time and were exceptionally complex in construction compared to alternatives. Their main feature being solely that there is no loud spark gap, but you get SGTC-like results.
Registered Member #54655
Joined: Thu Mar 19 2015, 05:56PM
Location: BC, Canada
Posts: 82
As cool as they are,I'm not talking about SIDAC TC's. If there is any way to build a musical coil with a triggered spark gap, I want to try it. Because musical coils are awesome and I haven't had much luck with solid state stuff. It's fine if I'm limited to lower notes.
Registered Member #1403
Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
Benjamin wrote ...
As cool as they are,I'm not talking about SIDAC TC's. If there is any way to build a musical coil with a triggered spark gap, I want to try it. Because musical coils are awesome and I haven't had much luck with solid state stuff. It's fine if I'm limited to lower notes.
I would imagine that a RSG with a fairly large servo motor could do the trick, quickly switching speeds up and down for playing notes, that might even get the sound close to a DRSSTC.
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Musical dc triggered gap coil?
