[sdiy] suboctaves

[harry]

OK Scott lets take this outside  ;^P

I say "multiply by two and divide by three"

YOU say "Multiply by three and divide by two"

Hmmm... Well we are each going to get a fourth or fifth.

But yours isn't a suboctave... its a fifth above...
Mine is a fourth down... (suboctave)...

But hey either way it a "C" and a "G"... right ?   ;^P

H^) hary

Scott Gravenhorst wrote:

> matti <matti at devo.com> wrote:
> >curently I'm using CD4017's to generate /2 and /3 subharmonics. This means
> >six chips : quad opamp for quaring up, one 4017 for /2, one 4017 for /3,
> >times two for both fatman voices.
> >
> >I'm wondering a few things : are there any chips that give multiple
> >divided outputs? how do I accomplish /1.5?
>
> I did /1.5 by multiplying first by 3 then divide by 2.  The
> multiplication happens in a PLL.  This method will yield a
> symmetrical waveform.
>
> Also for a fatman, the 555 timer outputs a nice -12v pulse for
> each reset on pin 3.  A CMOS counter setup to run from -12
> and ground can be connected directly to pin 3.  I used a 4027
> for my suboctave connected this way.  You could easily drive
> your 4017s the same way and eliminate the squaring opamps.
> Just put Vss to -12v and Vdd to ground.
>
> >
> >thanks
> >
> >
> >-
> >finland red
> >germany black
> >egypt white
> >
>
> =========================================================
> - Government: The other religion.
> - The media's credibility should always be questioned.
> - Lambs who lie down with lions are lunch.
>
> -- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
> -- Linux Rex         | RedWebMail by RedStarWare
> -- FatMan: home1.GTE.NET/res0658s/TekLab_FatMan_WebSite/index.html

--
Jihad Terrorism Conspiracy New World Order
Revolution Black Helicopters Freedom of
Speech First Amendment Rights: Carnivore Bait
go ahead and READ my e-mail I have nothing to
hide... how about YOU ???