triangle VCOs and Buchla designs

[Terry Michaels]

Message text written by mark verbos
>ANYWAY, I am now wondering if there is any real advantage to going
descrete
or is it just because OTAs were expensive or rare in the 70s. Has anyone
ever
tried both? When I start my Buchla 259 clone should I just use a 3080?
anyone?<

Hi Mark:

Here is one possibe answer.  You can't trim the current mirror ratio in a
3080, so you often end up with a slight asymmetry in your oscillator
waveform.  The Buchla descrete design has a trim for that, at least at the
low end of the frequency scale.

Terry Michaels