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Joined: Jan 2001
Posts: 13,858
Carpal Tunnel
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OP
Carpal Tunnel
Joined: Jan 2001
Posts: 13,858 |
Dear Rubrick: YOUR URL is far better than any I could find. But I challenge you to find
in your site a diagram of a dimmer switch, showing a triac, and an explanation of
hysteresis. I am quite sure many members of AWADtalk have such dimmer switches, but
no idea how they work.
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Joined: Jan 2001
Posts: 13,858
Carpal Tunnel
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OP
Carpal Tunnel
Joined: Jan 2001
Posts: 13,858 |
Dear Rubrick: Joke on me. I searched again, and had happy thought to search for "dimmer switch" and found a site describing a triac, and showing a circuit. http://www.howstuffworks.com/dimmer-switch3.htm My faith in Internet is restored; thanks to your demonstration that my previous search was not properly conceived. Bill
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Joined: Mar 2002
Posts: 1,692
Pooh-Bah
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Pooh-Bah
Joined: Mar 2002
Posts: 1,692 |
a rope with some slag in it one which you jerk, and the energy of the jerk works through the slag, and then the object attached at the other end finally moves?From the Dictionary of English slang: Slag: Noun. 1. A prostitute or promiscuous woman. Derog. 
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Joined: Dec 2000
Posts: 13,803
Carpal Tunnel
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Carpal Tunnel
Joined: Dec 2000
Posts: 13,803 |
They told us about standing Waves on a transmission line in electronics school in the Navy, but this is something else altogether different.
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Joined: Jan 2001
Posts: 1,156
old hand
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old hand
Joined: Jan 2001
Posts: 1,156 |
I liked Rubrick's link explaining hysteresis. It does a good job of explaining it. A "hysteresis loop" is what I was thinking of when I first read it, where if you perform an action, and the perform its opposite, you don't end up where you started, because of hysteresis.
Imagine dragging a reasonably obedient dog around by a 6' leash, and that you start with the dog 6' to your left. First you walk him 20 feet to the right. This means, because of the leash, he's only moved 14 feet to the right. Then you go back to where you started, 20 feet to the left. Buddy the dog is still going to be 6' to your right when you finish, because his rule is "always walk behind my owner at the full length of the leash". So although you have taken yourself exactly back to where you started, because of some lag in the system (where the system = you + Buddy the dog), the whole thing is not quite back to its initial state.
And of course, you can think of ways to imagine this problem where you do both end up in the original state, but there are also many starting points, combined with the "lag" produced by the rope and the fact that this obedient little dog only trails behind you , where you don't both end up in the same position. Does that make sense?
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Joined: Jan 2001
Posts: 13,858
Carpal Tunnel
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OP
Carpal Tunnel
Joined: Jan 2001
Posts: 13,858 |
Slag used to be of considerable value in the old days when limestone was added to charge
of an iron smelting furnace. The slag could be ground and used as very serviceable cement,
in spite of its unattractive color. With the new basic oxygen process, I don't know what
the slag is like.
Damned if I can think of a way that slag should become slang for sex industry person.
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Joined: Sep 2001
Posts: 6,296
Carpal Tunnel
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Carpal Tunnel
Joined: Sep 2001
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addict
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addict
Joined: May 2000
Posts: 679 |
Yes, things are getting pretty slack around here.
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Joined: Jan 2001
Posts: 13,858
Carpal Tunnel
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OP
Carpal Tunnel
Joined: Jan 2001
Posts: 13,858 |
Dear Rubrick: my search was slack, yours was slick. My congratulations and gratitude, Sir.
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