The resistor connected to Pin 12 of the 4046 sets the minimum frequency.
Increase its value, or even remove it. Leave pin 12 open if you do remove
it. Increasing the 10n capacitor will also reduce the speed, but it will be
an overall reduction of speed - the top end will suffer.
Ken Stone sasami@... or sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
Increase its value, or even remove it. Leave pin 12 open if you do remove
it. Increasing the 10n capacitor will also reduce the speed, but it will be
an overall reduction of speed - the top end will suffer.
>Hello again,_______________________________________________________________________
>
> I've been patching an LFO just under the audible range into the
>external clock input. Works great and modulating resonating filters
>is real nice. I would like to get the internal VCO to be able to go
>REAL slow. Right now I get pretty white noise with the speed turned
>fully up, and Defender arcade game turned fully down.
>
>What should I look to in order to get the vco(4046) to go slower? Is
>there a lower limit?
>
>Thanks,
>Peng
>
>
>
>
>
>
>See the following URLS for the CGS Modular Synth home page:
>Main: http://www.cgs.synth.net/
>Secondary: http://otherunicorn.0catch.com/synth/
>Yahoo! Groups Links
>
>
>
>
>
>
>
>
Ken Stone sasami@... or sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>