Talk:Phase-locked loop
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"might have an internal 2.4 GHz core clock which is phase aligned to a bus clock running at 100 MHz"
- Isn't the 100 MHz phase-aligned to the 2.4 GHz? Hmmm... I guess not. - Omegatron 17:13, Mar 2, 2005 (UTC)
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- Never heard of the term phase aligned. What does it mean?--Light current 01:10, 28 March 2006 (UTC)
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[edit] PC-centric bias?
I don't think an article discussing something as fundamental as phase-locked loops should start off with a fairly weird and trivial application in desktop computers. It'd be like discussing European history and starting with a list of opening dates of McDonalds' franchises in Paris. Sure, it's part of the subject but there's a *lot* going on that's more central to the topic. I'm putting this article on my to-do list but it may be a while - can someone reorganize it and mention more of the history and broad sweep of applications before obsessing on nit-picky PC guts? --Wtshymanski 17:13, 22 Apr 2005 (UTC)
- That's just an artifact of whoever started the article and didn't know about any other applications, most likely. Fix it. :-) - Omegatron 17:39, Apr 22, 2005 (UTC)
- Actually, generating clocks for microprocessors isn't "trivial" at all. Probably the most common purpose for PLLs, actually. - Omegatron 17:41, Apr 22, 2005 (UTC)
- Commonplace, sure, but not especially interesting compared to the other neat things PLLs do. I've gone through my library at home but I can't find any good history of the technique. There's got to be some rack of vacuum tubes out there that was the first PLL. --Wtshymanski 00:57, 23 Apr 2005 (UTC)
240.182
- Yeah, I agree. That's why I started working on math fundamentals. That's how I learned. I haven't had time to get much further with it. I wanted to include simple reference solutions for common loop filters, e.g. one pole RC, lag-lead, integrator etc. I usually re-derive all the Laplace transforms every time I design one because I can't find the equations from the last time ;-) There are references out there, but most of them aren't very good. I added a couple of transforms to the Laplace transform article for just this reason. -- Madhu 23:42, 23 October 2005 (UTC)
[edit] Time for a rewrite
The article is getting a little disorganized again and I've just pruned some apparent redundancies and added a section break. --Wtshymanski 15:03, 4 November 2005 (UTC)
[edit] PPL?
This is listed on the "PPL" disambiguation page, but "PLL" redirects here and is given in the article as the acronym. Is it also referred to as PPL sometimes, or is it just there by mistake? -Elmer Clark 07:23, 6 February 2006 (UTC)
[edit] Mechanical analogy
The mechanical analogy refers to a frequency locked loop- not a PLL and is therefore incorrect. This section needs rewriting explaining the phase locking operation. --Light current 21:07, 18 February 2006 (UTC)
