Article View: sci.electronics
Article #9087Re: Radio Electronics Descrambler
From: George Pell
Date: Fri, 21 Dec 1990 00:28
Date: Fri, 21 Dec 1990 00:28
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+In article <1990Dec18.224950.7142@usenet@scion.CS.ORST.EDU>, +harrist@jacobs.CS.ORST.EDU (Tim Harris) writes about debugging +a home built analog circuit: + + > the one who really knows what he's doing). My brother poked + > around the board with his finger and BAM, it locked up and was + > working pretty good but unfortunately when you unplug it you have + > to poke at it again to jump start it. At that point we took it + And many others reply...... Actually what is happening is that the capture range of your PLL is smaller than the lock range. The cap that sets the free running frequency for your PLL is just a bit too small. Put a 10 pf in parallel and it will lock every time.
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!zephyr.ens.tek.com!vice!georgep From: georgep@vice.ICO.TEK.COM (George Pell) Newsgroups: sci.electronics Subject: Re: Radio Electronics Descrambler Message-ID: <6558@vice.ICO.TEK.COM> Date: 21 Dec 90 00:28:47 GMT References: <1990Dec17.184710.28481@csn.org> <1990Dec19.112229.1@bunyip.enet.dec.com> <1990Dec19.173709.19066@cbnewse.att.com> Distribution: na Organization: Tektronix Inc., Beaverton, Or. Lines: 15