[sdiy] Imperfect VCO

[Grant Richter]

Franco HF compensation (R in series with timing cap) distorts the waveform
as frequency increases. Using a very poor exp. pair (like PNPs in CA3096)
requires Franco compensation in the order of 10K with extreme waveform
shifts. Built some "unintentionally".

> It got me thinking if anyone has built VC waveshapers that
> do this sort of thing to a "perfect" VCO?
>