Tom Schouten on Twitter: "The VCF CV input is like Q_SINK in here: http://t.co/dr2OxkzyAJ Current mirror hack explained here http://t.co/hVP8Lmp4Ev" / Twitter

The VCF is a "modernized" diode ladder using rail2rail opamps zwizwa.be/archive/ladder

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The VCF CV input is like Q_SINK in here: zwizwa.be/archive/pic_sa Current mirror hack explained here zwizwa.be/-/math/2014051

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Part of an effort to simplify the analog part by doing some of the calibration digitally in the uC.

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I still need to find a good single-die NPN array to replace the old CA3046.

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