Building The 3340 VCO 

3340 VCO (Eurorack Voltage Controlled Oscillator)
This is a basic circuit design from CEM3340 datasheet. It was widely used in the 80s by many synth manufacturers such as Roland and Oberheim. Its hand build with good quality components and AS3340 IC (equivalent of CEM3340). Front panel is also hand printed. This is a 10HP eurorack synth module.
It can generate 3 different wave forms (Square, Triangle and Ramp). It has hard sync and soft sync inputs, Linear Frequency Modulation input and also 1 volt per octave input with solid tracking. Pulse width can also be adjusted for square wave and it can also be modulated with external cv. It comes with mounting screws and power cable.It’s a reasonably priced custom build unit and it has some juice.
Buy:
www.ebay.co.uk...
Music:
Atesh K. - Ethno-Robotic (ASI Remix)