This is a Robert Penfold project that appeared in Practical Electronics, in 1987. It provides a standard 1v/octave control voltage, and 5v gate output with variable duration, for driving analog synth modules. I have one almost ready to go but still haven't set it up or tested it, so I can't offer a road test comment, however it appears pretty solidly designed. The most exotic components are a CA3046 and CA3140. Virtually everything else is pretty much stock. Requires a +/-12v supply. PLEASE NOTE that due to scanning, scaling, and acrobat conversion, the PC-mask may not be exactly to 1:1 scale. You may have to enlarge or reduce the page a bit. Keep a 14-pin chip of some kind on hand to place against an IC pattern on the PC-mask to determine if the scale is accurate. PLEASE NOTE as well that the PC-mask is for the more traditional forms of PC-etching, and not for Press-N-Peel. The pattern you see in the article is exactly the way it shold look on the copper side. You will have to flip it around for PnP purposes.
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