[sdiy] EMS VCO expo

Tony Allgood oakleysound at gmail.com
Tue Jul 11 16:22:15 CEST 2023

Can anyone explain the function of Q61 and Q63 in the exponential 
convertor of the EMS Synthi VCO?

The schematic for the CV summing, expo and integrator can be found here:


Many thanks,


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