Nice, Gono.
Is the sine wave at the bottom the line-out output to the external amp?
I would think that a sign wave like that would be a pretty mellow sounding tone.
Is that what you were trying to achieve? Or just pitch stability?
Burns B3 Guts
Posted: 3/31/2022 9:23:46 PM
Hola, Smwells5.
The images are the waves that come out of the antenna, of the volume oscillator, I don't have a B3 theremin, rather I'm trying to make a replica.
Rather I'm just messing around with the oscillators a bit, I want to give it more oscillation voltage on the antenna, so that electrical noise doesn't interfere as much.
Posted: 5/28/2022 3:14:27 PM
Pedro, very nice work on your replica!
What is the lowest pitch you can produce? I found that using the same IC package for both pitch oscillators led to injection locking at a higher frequency than I wanted. It was better to use an extra 4069 for one of them. (I've been meaning to try 7555s, but haven't gotten around to it.)
Did you end up using CD4069UB parts instead of the CD4069C shown on your schematic?
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