[sdiy] 566 Functional Replacement

[Tim Ressel]

Hi,

A while ago I asked for circuit ideas to use my rare 566s in. The more I 
got into the suggestions the more I realized just how useful the 566 
was. And the more sad I got that its gone.

I am looking for a functional replacement for what the 566 used to do 
for us. A small, low part count vco design that covers more or less what 
the 566 did. I would prefer analog over digital because some uses, like 
noise modulation, may not work so well with a digital solution.

I have looked at the 4046 design but it requires some components, 
especially if you want triangle output. There was a tri-core design I 
saw somewhere online that was real tight. I think it was a 13700 based 
circuit. But I can't find it now. The is the KA331 but it is DIP only.

Hmm .. maybe I am out of luck.

-- 
--Tim Ressel
Circuit Abbey
timr at circuitabbey.com