"This is my Monophonic Synthesizer. It was designed and built in the late 1970s. It is shown here with all the patch cords removed so the panels are more visible. Some of the modules were never completed beyond the panel. Click any image for a bigger version."

Tim's Ancient Analog Synthesizer Page

The site includes images, schematics and more general info on the following DIY modules:

VCO
VCF - 2 pole state variable
VCA
ADSR Envelope Generator
Sample and Hold
Ring Modulator
LFO (8038 based)
Pseudo Random Noise Generator
Flanger

via SK