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A fact from Loading coil appeared on Wikipedia's Main Page in the Did you know column on 3 October 2008, and was viewed approximately 6,368 times (disclaimer) (check views). The text of the entry was as follows:

Did you know... the loading coil saved AT&T an estimated US$100 million in the first quarter of the 20th century but Oliver Heaviside was paid nothing for the idea?

A record of the entry may be seen at Wikipedia:Recent additions/2008/October.

Wikipedia

Submarine power cable loading

Loading coils for power transmission systems? Can anyone substantiate this statement? While capacitors are installed for power factor correction, I am unaware of the use of coils in power distribution. LorenzoB 04:43, 13 January 2007 (UTC)[reply]

Distribution, no; underwater transmission, yes. See Cross-Skagerak for an example of how excess capacitance is dealt with when the distance is too great for load coils, and Submarine power cable for a brief but more general discussion.

Jim.henderson 00:08, 14 January 2007 (UTC)[reply]

Both those articles say that the solution for power is DC transmission, not loading coils. I cannot get any ghits on the subject either (except for Wikipedia, its mirrors, forks and copiers). I've tagged it as a disputed fact.

SpinningSpark 23:43, 28 September 2008 (UTC)[reply]

Oops, forgot about this for a while. Yes, articles about individual underwater lines are about notable ones, which is to say big long ones, and big long ones have to be DC or their capacitance will be too big a problem. Hundreds of underwater lines, maybe thousands, are a few miles or kilometers, including the one from Glen Cove, New York to Rye, New York, and those are almost all AC and thus, at least to my limited understanding, are the ones that (a) need some sort of compensation for capacitance and (b) can have it without the expense of DC. Those get little bragging in technical journals or political controversy or other publicity, so we need a general source, which I haven't been able to find, alas, so it doesn't really belong in the article. Jim.henderson (talk) 18:35, 9 October 2008 (UTC)[reply]

Images?

Does anyone have any images of this because I want to know what they look like. —Preceding unsigned comment added by Komomisp (talk • contribs) 19:19, 7 September 2008 (UTC)[reply]

Description missing

This article does a good job of describing how a loading coil is used, but not what it IS, other than to say "it's a coil", which is obvious from the name. The picture makes the reader think of a transformer.

Wikipedia articles can't be written for people who already understand these things.

I barely have time to write this note, but somebody say that it's a electricity-conducting coil (as opposed to a coil of rope), what it's wrapped around (plastic), HOW it increases inductance, and why inductance is a good thing. And take a photo of one they might have seen on a cable, not just a schematic. HelviticaBold 00:18, 17 March 2012 (UTC)[reply]

It is just a coil - I think you are confusing yourself by thinking this is more complicated than it actually is. It is a coil of conducting wire, as coils always are in electrical circuits. It is really counterproductive to explain "coil" in all the thousands of articles in which it appears, and if there were any doubt, the links to coil and inductor in the first sentence of the article will instantly make it clear. I agree the diagram of the balanced line could lead to confusion so I have added some explanation of this format. There is indeed some transformer action betweeen the two windings, but it is not actually a transformer as it does not link to any cicuit other than the one it is in.

You say you are in a hurry - I don't think you can have read the article very thoroughly. The section on Oliver Heaviside does a good job of explaining why increasing inductance is a good thing. The reason for the Heaviside condition is deeply mathematical and I am not aware of any simple "hand waving" explanation. Those interested can follow the link.

A picture would be good, but there is currently nothing suitable on Commons. Spinning Spark 10:11, 17 March 2012 (UTC)[reply]

But there is on Flickr, I'll upload something. Spinning Spark 14:11, 17 March 2012 (UTC)[reply]

Recharger

This is the type of instrument you would need to recharge car batteries, along with a pulsating current to create a fluctuating current of some sort or current which goes one direct ie direct current flow. — Preceding unsigned comment added by Mvdc1980 (talk • contribs) 16:28, 10 May 2014 (UTC)[reply]

typo

"A loading coil is not a transformer to provide coupling to another other circuit."

If the page weren't "protected," I'd have made the simple edit, myself. Instead, I should suggest another proofreading by whomever "protected" the page. 75.110.100.120 (talk) 17:55, 13 June 2015 (UTC)[reply]

Semi-protected edit request on 7 April 2016

It is requested that an edit be made to the semi-protected article at Loading coil. (edit · history · last · links · protection log)

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The second sentence in this article:

A loading coil is not a transformer to provide coupling to another other circuit.

Should be changed to

A loading coil is not a transformer and it doesn't provide coupling to another circuit.

Because: 1) "another other" is grammatically incorrect 2) The current wording is ambiguous, as it isn't clear whether the loading coil is a transformer that doesn't provide coupling, or isn't a transformer but provides coupling. Rewording it in the stated way removes this ambiguity.

Note: The word "transformer" could be linked to the Wikipedia page on transformers. 167.220.196.248 (talk) 12:20, 7 April 2016 (UTC)[reply]