DIY Polivoks VCO II
Polivoks-inspired VCO kit with PWM, sync and octave switch
Panel · 61 × 128.5 mm
Description
Erica Synths' DIY Polivoks VCO II, a retired kit: its core borrowed from the Russian Polivoks synthesizer's VCO, the original matched transistor IC in its exponential converter, updated with ±10 V regulators, modern signal levels, all outputs at once, CV inputs for positive voltages, a voltage controlled pulse width and a sync input.
Key features
- Triangle, saw and pulse outputs, all at once, 10 Vptp
- TUNE over two octaves; a five position OCTAVE switch, two octaves up or down
- Pulse width by hand and by CV, 1 to 99 %
- Exponential FM input with attenuator
- Sync input
- Tracking across 8 octaves, C0 to C8; SCALE and OCTAVE calibration trimmers on the panel
- +34 mA, -36 mA, 35 mm deep, skiff friendly