[sdiy] VCO tuning philosophy re-visited

[Ian Fritz]

At 02:23 AM 2/7/2011, lanterma at ece.gatech.edu wrote:

>Would you recommend the LM331 for use in regular audio VCOs too (i.e., 
>non-ultrasonic ones)?

That method has never been popular, I believe because the output is a 
narrow pulse.  There is a mV level Saw available also, which you could try 
amplifying.


>Any thoughts on whether it's better or worse than the XR4151 used in the 
>Chroma?

Dunno.  Compare the specs for range and linearity and stability, I guess.

Ian