Division 6 CEM3340 VCO

This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. The boards are available fully-assembled or in kit format. Can be used as a standalone board, put in an enclosure, or mounted behind a modular synthesizer panel (a Eurorack-format panel is available from us, or create your own).

Features

• Square, triangle, and sawtooth waves
• Coarse and fine-tuning controls
• Adjustable 1V/O CV input
• Mod, PW and hard-sync inputs
• Reverse-polarity protected
• Eurorack-style power input
• I/O connections on one edge of board; can be connected to wires or separate control board
• Works with CEM3340 or AS3340 VCO chip (kits come with AS3340)

Inputs

• 1V/O CV
• Mod CV (AC-coupled)
• PW (Adjusts duty-cycle of square wave up or down)
• Hard-sync

Outputs

• Square / pulse wave
• Triangle wave
• Sawtooth wave

Controls

• Coarse tune
• Fine tune

Specifications

• Power supply: +/- 12V to 15 VDC
• Power connection: Eurorack 10-pin shrouded header (Can hook wires to pin holes instead if not building for Eurorack)
• Current draw: 9mA (+12V) / 6mA (-12V) / 0mA (+5)
• Dimensions, main board: 50mm x 60mm
• Eurorack HP: 4
• Eurorack depth: 64mm