[sdiy] 4046 VCO overclocking a PIC

Tim Stinchcombe tim102 at timstinchcombe.co.uk
Mon Aug 24 19:18:29 CEST 2015

> Are there other 
> musical circuits using the 4046 as a high frequency VCO? Any 
> other thoughts or comments?

I use a very similar set-up for controlling the cut-off of my
switched-capacitor filter design:


schematic: http://www.timstinchcombe.co.uk/synth/mf10/lmf100.pdf

(I've used pin 12 rather than 11, and I can't remember enough about the
internals of the 4046 to say whether one is better than the other...)

Tim Stinchcombe 

Cheltenham, Glos, UK
email: tim102 at timstinchcombe.co.uk

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