THOMAS HENRY X-4046 VCO

Original schematic and more information: LINK1, LINK2

STRIPBOARD LAYOUT

I built it as 12v eurorack version, however somehow triangle and saw outputs exceeded 10v and sine out didn't reach 10v. So I replaced some resistors to get 10Vpp.

All the transistors are 2N3904, however the two TRs on the board where LT1013 is placed should be matched.

FACEPLATE LAYOUT

MEASUREMENT

Sine wave: 10.7Vpp

Pulse wave: 10.3Vpp / Duty Cycle: 26%~74%

Triangle wave: 12.3Vpp

Saw wave: 9.75Vpp

Rampoid wave