Suboctave generator - 4013?

[Happy Harry]

Hi Dave:

I use 4013 (and 4024, or 4520 etc...) It is a good method
and does not have problems.

H^)  harry


>From: DCMagnuson at aol.com
>To: synth-diy at node12b53.a2000.nl
>Subject: Suboctave generator - 4013?
>Date: Thu, 18 Jan 2001 12:26:17 EST
>
>Hi List,
>
>I'm designing an outboard second voice for an SH-101, and I'm fooing around
>with VCO designs.  I want to add the suboctaves to the new VCO, like there
>are on the original VCO.
>
>The SH-101 uses a 4013 to derive it's suboctaves.  The 4013 is driven from
>the Saw wave, and creates pulse waves 1 and 2 octaves down.  By mixing the
>two they also create a 2 octave down pulse w/ ~25% duty cycle.
>
>Is this a good method of creating sub octaves, or is there a better circuit
>to use?  I like the extremely low parts count of the 101's design, but I
>don't know if it's a "good" method, or just a "cheap" method that will be
>compromised in quality.
>
>Anyone use 4013-based sub octave generators in their designs?  Drawbacks?
>Limitations?
>
>Thanks in advance
>Dave Magnuson

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