DIY Eurorack Builds

Switch VCA

Experimental switched-mode VCA as a cheap alternative to an OTA · Russell McClellan

MakerRussell McClellan
TypeExperimental switched-mode VCA as a cheap alternative to an OTA
MountingSMD
Width
LicenseOpen source (CC BY-SA 3.0, declared in the README)
Difficulty 🔥 SMD (0805)

0603 passives, an LM319 comparator, a JFET switch and two LF353 op amps. LTspice simulations of the switch, the saw generator and the reconstruction filter are in the repo. The README calls it experimental.

Documentation

This is a third-party open-source design, listed here as a build reference. Specs are researched from public sources; check the source repo and store for the current BOM, panel, and revision before ordering parts. Corrections welcome.

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