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Re: The Theremin / DRSSTC Project
Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
Hi Dan,
There is a digital solid state and public domain theremin version here:
http://thereminvision.com/version-2/TV-II-index.html
http://thereminvision.com/version-2/ThereminVision-II-manual.pdf
You can wire the basic circuit on a breadboard in about 1/4 hour.
The problem will be that the capacitance antennas will pickup the
voltage off the top terminal of the coil just like a length of wire
or plane wave antenna:
http://hot-streamer.com/TeslaCoils/MyPapers/planant/waveant3.html
You can easily model the thing in microsim to determine how bad that
will be. You will want to add a TVS across the antennas to
ground for sure which will not affect the function.
The voltage off the coil will appear as a valid signal but might very
well be cancelled by the counters and anti-jitter stuff. Probably
not to hard to filter for relatively low speed hand movement in this case.
I have digital demo board of the above and a Moog theremin I could
try out if you need. I would think the digital version would be vastly better.
Cheers,
Terry
At 08:55 PM 6/28/2006, you wrote:
Watching an old sci-fi martian movie this past weekend has inspired
me to explore the possibility of using a Theremin device to control
the output of a DRSSTC system. I plan on designing
a system which can independently control both pitch (PRF) and arc
length (volume) of the DRSSTC by simply moving your hands around the
Theremin device. The only question mark is
how it will interact with the fields generated by the DRSSTC
itself. That i won't know until i actually build the device and do
the testing. I'm keeping my fingers crossed, so if it works, it
will be pretty damn sweet!
For those who don't know what a Theremin is, here is some
information here on it:
<http://en.wikipedia.org/wiki/Theremin>http://en.wikipedia.org/wiki/Theremin
Dan