DIY box for adding shuffle to a Sync Signal

[Magnus Danielson]

From: "Dan Gendreau" <gendreau at rochester.rr.com>
Subject: RE: DIY box for adding shuffle to a Sync Signal
Date: Tue, 28 Dec 1999 19:33:43 -0500

> Does anyone out there have experience with phase locked loops? If we could
> convert the 24ppq sync signal into a 48 or 96ppq signal, this design could
> be really useful!

Well, this sounds like the job for a few trusty CMOS chips, the 4046 and a
4024, trow in 2 caps and 3 resistors and you'd be set.

I think I'd try the phase comparator II in the 4046, hooking the loop filter
to output pin 13 and then into pin 9. The 4024 will be clocked from pin 4
and a suitable tap is taken to feed the pin 3. Shaping the signal and feeding
that into pin 14 and taping the output train at pin 4. Hook a cap between
pin 6 and 7, and some suitable resistors for pin 11 and 12.

What frequencies would be of interest? I think I could prototyp this pretty
fast, I found a bunch of 4046s around today and I think I have a 4024 or
4040 at hand as well.

Then, you _could_ do this without PLLs, but I don't think such solutions will
take a full octave of frequency range... I need to test some time...

Cheers,
Magnus