Dual VCO

Dual VCO based on CEM3374 chip. Built on three boards; one for the CEM3374, and two waveshaper boards containing PWM and sine shaper circuitry.

• Temperature compensated
• Saw, Tri, Sine, Pulse, Square (TTL) waveforms
• Coarse and Fine frequency adjust
• Sync input
• FM input with level control
• PWM input, initial PW, and internal PWM LFO with rate control
• Two 1v/octave control voltage inputs

Status

PCB built and stuffed PCB tested and working Wired to front panel and tested!

Dual VCO (1) schematic
Dual VCO (2) schematic
Dual VCO Bill of Materials

Dual VCO PCB 2x size

Waveshaper schematic
Waveshaper Bill of Materials

Waveshaper 2x PCB layout