Frequency multiplication

[Tony Allgood]

Hi all,

I want to make a high frequency VCO, 32 times the normal frequency, to use
as a driver osc for a walsh bank. There are several options:
1. Use a HF VCO... like a CEM3340 with a smaller than usual cap. I've tried
this before, it worked sort of...
2. Use an ordinary pitched VCO's triangle output and FWR and level shift it
5 times over. Never tried this but it could work... but will it track fast
enough?
3. Use an ordinary VCO's sawtooth output and have a load of comparators to
generate a pulse train as the sawtooth drops in voltage over one time
period.
4. I'm open to any other ideas.

Regards,

Tony Allgood, Cumbria, UK

e-mail: oakley at enterprise.net

Rack mounted Moog VCF module. Details to be found at...

http://aupe.phys.andrews.edu/diy_archive/schematics/effects/filter.html