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Hello,<br>
<br>
<blockquote type=cite cite>anyone know where I might find more info on
Neon oscilators and their<br>
design ?<br>
[think they might be called relaxation oscilators ? ]</blockquote><br>
I attached a small .gif of a neon relaxation oscillator circuit.
The basic model is pretty simple.<br>
<br>
<blockquote type=cite cite>.<br>
Be interested to know any advantages / disadvantages for use at
Audio<br>
and LF frequencies .</blockquote><br>
EB is a bit disparaging of their qualities - or lack thereof. His main
comment is that they are unstable, and do not hold a tune, whereas the
thyratron circuits are much more stable and tend to stay in tune. I have
experimented with both, but not to the extent that I could quantify their
musical usefulness. About all I can say is that they are sawtooth
oscillators, with interesting harmonic products :)<br>
<br>
The output voltage level is an interesting situation. In as much as I
don't care for the thought of patchcord ends capable of shocking us, I
think that is probably the only real issue of concern. The cords
themselves ought to handle the voltages fine. I'd be a little concerned
using a resistive divider to drop voltage for a subsequent SS stage,
because the Zout of the tube stage is (probably) high already. I could
see an SS input stage loading the signal... For subsequent tube stages,
let it swing away...<br>
<br>
Cost might be a problem, but we could use transformers to couple the
stages; this solves our voltage and impedance issues, and offers another
opportunity to shape the sound of the unit ;)<br>
<br>
Just thinking...<br>
<br>
<br>
<br>
<br>
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