Re:Don't make coils (Score:0) by Anonymous Coward on Wed Jul 22, '09 10:27 PM (#28790773)
It will create a larger surge current when you switch the power on to the cable.
No, it will not. As another reader points out below, any decrease in current will be negligible at 60Hz, but there is no such thing as a decrease that is so small that it is an increase.
It may only reduce current draw by an amount so small as to be almost impossible to measure, but there is no way it can do that and *increase* current draw at the same time, which was my original point to the poster who thought looping power wires would somehow increase current flow.
An inductor after converting it to DC? You sure about that?
The poster to whom you replied probably is referring to a capacitor, although a better quality post-rectification filter could well have an inductor in series in the hot line with an electrolytic capacitor connected between ground and each of the inductor's terminals.
The chances of the average wall-wart having that much filter are slim to none, although sometimes the device to be powered by it will have some filtering on its power input.
I was going to parcel out some mod points in this thread, but I can't let this go unchallenged.
Don't make coils (Score:0) by Anonymous Coward on Wed Jul 22, '09 06:41 PM (#28789059)
Don't make coils out of excess cable. Loops of cable act as an inductance. When you switch on a device which is connected via a long power cable in loops, the extra load from the inductance can be enough to blow the fuse of the circuit.
Electrical load goes up as resistance and/or reactance goes down. Coiling a wire increases inductance. This increases inductive reactance. This delays direct current from reaching maximum and reduces alternating current. In other words, less load, not more.
That doesn't mean that I'm recommending loops in long power cords, just that the loops will not increase current draw.
Between stuff like this and the English police arresting a photographer for being too tall (it's on theregister.co.uk), I'm starting to think that stupid pills really do exist and are in mass distribution.
I know what you mean. The other day something remended me of another story on 60 minutes years ago about something called the "walking man" case which dealt with whether the cops could stop you and demand ID "just because". My Google-fu wasn't good enough to get past all the portable tape player links, but your reply goaded me into making an extra effort to force Google to my will and I came up with the name of the Supreme Court case from 1983, "Kolender v. Lawson". Thanks.
The CBS show "60 Minutes" covered that guy's story.
Basically what happened was that his money got arrested and the only way to get it back was to post an equal amount as bail. Seriously, that's how they explained it, 'cause that's what the government told them.
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Give a cowhardon a break!
Sounds painful - real painful
Paging Dr. Bennett. Paging Dr. Bennett.
And of course I find it 15 minutes after my points expired.
Another mail order EE heard from:
Re:Don't make coils (Score:0)
by Anonymous Coward on Wed Jul 22, '09 10:27 PM (#28790773)
It will create a larger surge current when you switch the power on to the cable.
No, it will not. As another reader points out below, any decrease in current will be negligible at 60Hz, but there is no such thing as a decrease that is so small that it is an increase.
It may only reduce current draw by an amount so small as to be almost impossible to measure, but there is no way it can do that and *increase* current draw at the same time, which was my original point to the poster who thought looping power wires would somehow increase current flow.
Whether something from Belkin is good or bad seems to depend a lot on what it is and who makes it for them.
An inductor after converting it to DC? You sure about that?
The poster to whom you replied probably is referring to a capacitor, although a better quality post-rectification filter could well have an inductor in series in the hot line with an electrolytic capacitor connected between ground and each of the inductor's terminals.
The chances of the average wall-wart having that much filter are slim to none, although sometimes the device to be powered by it will have some filtering on its power input.
I was going to parcel out some mod points in this thread, but I can't let this go unchallenged.
Don't make coils (Score:0)
by Anonymous Coward on Wed Jul 22, '09 06:41 PM (#28789059)
Don't make coils out of excess cable. Loops of cable act as an inductance. When you switch on a device which is connected via a long power cable in loops, the extra load from the inductance can be enough to blow the fuse of the circuit.
Electrical load goes up as resistance and/or reactance goes down. Coiling a wire increases inductance. This increases inductive reactance. This delays direct current from reaching maximum and reduces alternating current. In other words, less load, not more.
That doesn't mean that I'm recommending loops in long power cords, just that the loops will not increase current draw.
That commenter on your blog may actually be working for the Israeli government
www.muzzlewatch.com/2009/07/14/that-angry-commenter-on-your-blog-may-actually-be-working-for-the-israeli-government/
Yeah, over at HuffPo I think they even give 'em mod points. : - )
Oh noes, electronic records can be faked by people who have physical access to the machines.
Especially if they managed to hustle the previous owner out of the country almost a month before they "suddenly discover" them. : - )
Are you sure that you didn't mean this one?
Between stuff like this and the English police arresting a photographer for being too tall (it's on theregister.co.uk), I'm starting to think that stupid pills really do exist and are in mass distribution.
Getting home was much quicker, wasn't it?
You don't seem to have grasped the concept of "...uphill, both ways". : - )
He's not racist, he's not homophobic, he's not a woman hater.
He just plays one on the radio. : - )
...actively and intensely laying in the hammock...
So, did you really mean "lying", or are you a hen, or will your reading matter be the Kama Sutra and/or Masters and Johnson?
That's alright. Here in the South we have our fire ants (Solenopsis invicta) to defend us.
...and not U.S.
Anybody who tells Limbaugh about this has to get the buckets and shovels when he explodes.
Funny.
Creepy and disturbing, but funny.
You are personally well enough acquainted with Seymour Hersh to assess his mental health?
Well, I'm so ancient that I've been using the term (without having heard it previously) for almost 40 years.
Gee, I don't think I've ever been remended before. :-(
Remend me to use "Preview" next time.
I know what you mean. The other day something remended me of another story on 60 minutes years ago about something called the "walking man" case which dealt with whether the cops could stop you and demand ID "just because". My Google-fu wasn't good enough to get past all the portable tape player links, but your reply goaded me into making an extra effort to force Google to my will and I came up with the name of the Supreme Court case from 1983, "Kolender v. Lawson". Thanks.
"liquid bread"
I thought I was the only one who called it that.
The CBS show "60 Minutes" covered that guy's story.
Basically what happened was that his money got arrested and the only way to get it back was to post an equal amount as bail. Seriously, that's how they explained it, 'cause that's what the government told them.
Most political historians have long ago switched to the proper 4-Act Quinn Martin system.
Which, if correctly implemented, properly involves a prologue and an epilogue.
There was a big realignment of constiuencies around '68...
Commonly referred to as Nixon's "southern strategy", i.e., try to monopolize the redneck bigot vote.