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Recursion: see Recursion.
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I admit to some surprise that you know the term. I was deeply involved in electronics design when the PLL was invented, and spent a lot of time trying to grasp the mathematical model of capturing and tracking the phase shift required to keep the system stable. Fascinating stuff, and so many applications for the technique...
Will Rogers never met me.
modified 20-Mar-15 1:28am.
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No, no!
To be in a PLL would imply more homework questions in the Lounge to be "in-phase" with the input signal from the original poster. 
Your time will come, if you let it be right.
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Agent__007 wrote: To be in a PLL would imply more homework questions in the Lounge to be "in-phase" with the input signal from the original poster.
Ever see a dog chase it's tail? Same theory!
New version: WinHeist Version 2.1.0
When you are dead you don't know it, it's only difficult for others.
It's the same when you're stupid.
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Not quite a perfect simile, but it will do. I actually think the Ouroboros model is more accurate, as the snake will consume itself as it chases its tail, but must necessarily stop at some finite distance from the head, lest it consume its own ability to consume. A PLL develops a response output in proportion to the error signal at its input, but there must always be some amount of error present in order for it to continue to maintain a lock and function properly. A perfect lock will break it.
Will Rogers never met me.
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I believe your analogy is a better one I yield kind sir! Never heard of that Our-burros theory is that a Western thang? 
New version: WinHeist Version 2.1.0
When you are dead you don't know it, it's only difficult for others.
It's the same when you're stupid.
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I believe the image and concept originated in Greece, probably more than a couple of weeks ago. They couldn't afford to pay a philosopher these days, and probably would charge Socrates for his cup of hemlock tea. I wonder if they'd take Diners Club for that? Anyway, no - it's not Western: http://en.wikipedia.org/wiki/Ouroboros[^]
Will Rogers never met me.
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Roger Wright wrote: but there must always be some amount of error present in order for it to continue to maintain a lock and function properly
Am I right in assuming that in practice this is only a concern with digital PLL's?
Recursion: see Recursion.
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No. Analog phase discriminators also require a fixed error signal to maintain a lock. The major concern with digital PLLs is jitter, which can cause a loss of lock in high precision systems.
Will Rogers never met me.
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My thought was that in analog PLL's there'll always be some noise which will cause an error signal so you wouldn't have to explicitly deal with a zero-error-signal.. ?
Recursion: see Recursion.
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My brain can never decide if it's that, or a Prescribed Load List.
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This one![^].
Your time will come, if you let it be right.
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Agent__007 wrote: This one![^].
Great site.
It says that the next solar eclipse is on April 29th, 2014.
I'll make a note in my diary.
I wanna be a eunuchs developer! Pass me a bread knife!
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Not to defend the site (it was a result of Google search for "today's Moon phase"), but it does list "Mar 20, 2015" and "Sept 13, 2015" under "2015 Solar Eclipses" on this page[^].
Couldn't find the "Next Solar Eclipse" though, so you may be right.
Your time will come, if you let it be right.
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Agent__007 wrote: Couldn't find the "Next Solar Eclipse" though, so you may be right.
Er, it's on:
Agent__007 wrote: this page[^].
I wanna be a eunuchs developer! Pass me a bread knife!
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Indeed!
Your time will come, if you let it be right.
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Some mistakes are much more fun than others.
I wanna be a eunuchs developer! Pass me a bread knife!
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My bracket broke the first game[^]
What we got here is a failure to communicate
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Caveat: I'm not a sports fan.
So many people were streaming the games today at work, the web was unusable. If the damned game is that important, take a half day of vacation and go watch it at home or in your favorite bar. Leave the bandwidth available for those of us who have a job to do.
Software Zen: delete this;
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I'm retired. 
What we got here is a failure to communicate
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Gary R. Wheeler wrote: Leave the bandwidth available for those of us who have a job to dowant to browse CP.
ftfy (KSS version)
PooperPig - Coming Soon
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Cool.
Future kids cannot possibly differentiate between 'real reality' and 'unreal reality' 
Because, both are mixed up within the same scene.
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Awesome!
Now if the game with a feature that you could create your opponent, I've got a list of people I'd love to kill...over and over and over...
New version: WinHeist Version 2.1.0
When you are dead you don't know it, it's only difficult for others.
It's the same when you're stupid.
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So its primary selling point is entertainment, of course.
Did you know that there are people (LOTS of people) who are actually proud of being 90-hour-per-week gamers or couch potatoes?
Where's the human race going?
Down which drain in particular?
I wanna be a eunuchs developer! Pass me a bread knife!
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