[sdiy] CMOS CD4046 ring mod??

[harry]

Hmmm... as I recall former synth-diy "bad boy" Bjorn Julin used the 4046
phase comparator I  (ex-or gate) as a ring modulator in his 4046 VCO that
also featured a sawtooth output. Using the ex-or gate as a ring mod might
not
have been the most clever feature of the design (the sawtooth out is,
IMHO)...
but making the unused phase comparator a ring mod is pretty cool.

H^) harry

Tony Allgood wrote:

> >So has anyone ever built a ring mod using a 4046??
>
> The Radio Shack MG-1 used the 4046 VCO as a high frequency oscillator
> for a top-octave doo dah for its polyphonic output. And the little ex-or
> in the 4046 was used to create the 'bell-tone' from the two real VCOs
> also contained within the instrument.
>
> Regards,
>
> Tony Allgood, Penrith, Cumbria, England
>
> Oakley Modular Synth and TB3030:
> www.oakleysound.com/projects.htm
> My music: www.mp3.com/taklamakan

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