[sdiy] SH-3a VCO - how does it work

[René Schmitz]

On 20.04.2020 12:07, Adam Inglis (sdiy) wrote:
> I had this question a year ago or so, when I was looking at external 
> control for my SH-2000. Not exactly the same, but again, based around a UJT.
> 
> Then I discovered people have been asking this question on this list for 
> a very long time!
> Below is a comment by Juergen Haible from 1997. (and I think Rene 
> contributed to that discussion as well!)

Could well be. :) I have tried on and off to make a version of this that 
has a wide sweep range, and produces less heavy current spikes.
The latter is a problem if you have more than one oscillator, as they 
will sync via the supply rails.

Best,
  René

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