[sdiy] wednesday's DIY

[ryan williams]

replying to myself,

Playing with it a bit more. I realized it did not self-oscillate. 
decreasing the 100K feedback resistor to 68K and adding another diode 
made it much better. It still does something strange at large inputs, 
but the overall resonant sound is nice and it self-oscillates as well.

-ryan

ryan williams wrote:
> With 3 
> diodes in the feedback, the resonance works good until the signal level 
> is about +-2V. Any more causes only the center part of the waveform to 
> show resonance. This is fine for me since the theremin will have a 4069 
> oscillator with similar output level.