Curtis VCO

Maker	Gerbster
Type	CEM3340 style VCO with saw, triangle, sine and pulse at a uniform 10 Vpp
Mounting	Through-hole
Width	—
License	Proprietary (No licence published)
Difficulty	🌶️ Large through-hole

Clone of CEM3340 VCO, with wave shaping from Thomas Henry's Maximus VCO. Uses an AS3340 in place of the original CEM3340. Op amp stages attenuate and offset the three chip outputs so they all swing 10 Vpp around 0V, and a Thomas Henry wave shaper derives the sine from the triangle.

Documentation

• Bill of materials (BOM)
• Schematic
• Fabrication files (PCBA-ready)

Links

• Source / files on GitHub
• Maker page

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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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