[EFM] VCO Idea

tomg efm3 at mediaone.net
Tue May 9 17:51:06 CEST 2000


This is what I came up with...

http://www.xavax.com/efm/pdf/seq1.pdf

I've got a new one (4017 seq that is)....tiny thing....for 
CAM2

Tom




>     I have been playing with the breadboard and my Forest Mims books
> from radio shack and have made the most glorious display of running LEDs
> with a 4017 decade counter and a 555 timer. I must point out to all the
> beginning DIYers that a small success is most inspiring! try it.
> 
>     So anyway I had the idea that I could feed each of ten outputs
> through a pot into a an op-amp and I would have a sequencer! Then I
> thought if I ran the timer fast enough maybe this could act as a VCO
> with a wave form that could be shaped with these ten pots.
> 
>     My question to the group is do you think this is possible? it seems
> to me that I would want to make my 555 timer voltage controled at ten
> octaves to the volt, assuming that it would take 10 clock pulses to send
> the 4017 through one complete cycle.
> 
> 
> your comments greatly appreciated
> Thanks
> 
> --M
> 




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