[sdiy] suboctaves

[harry]

Hi Matti

Inline

matti 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?

Yes... the 4020, 4024, 4040, 4060, 4520 all do this. The 4520 is especially
cool because it is a dual counter with separate clock inputs... good for
two VCO's, or for a divide by 2,4,8,16 and 3,6,12,24...


> how do I accomplish /1.5?

With 50% duty cycle it is tricky. You multiply by 2, then divide by three.
Multiplying by 2 is the hard part... you can full wave rectify a triangle if
you
have one available, or use several comparators and a sawtooth to get multiple
pulses from a single cycle input.

H^) harry

>
>
> thanks
>
> -
> finland red
> germany black
> egypt white

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