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Trimmer - What's It For?

What does the trimmer do, when it is installed?

I used a 3K resistor as instructed.

Just curious.


  • In the (good) old days we used matched components to achieve VCO linearity, and a trimmer to tune it. However, as the MCU is powerful enough to calibrate the VCO we dropped the matched components and the trimmer..

    If you would still use a pot you could detune the thing live.. But MIDI pitch bend does the same, really.
  • I see. Thanks.
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