Talk:Degaussing

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This should probably be merged into Degauss as a historical or original use of the term. -- Ilya 03:08, 17 Nov 2004 (UTC)

Repeated internal degaussing does NOT damage monitors. --Qifan 20:42, 14 May 2005 (UTC)

Fun fact: you can temporarily "sabotage" a CRT monitor by holding a magnet near the screen when the internal degauss is triggered. This will magnetise the shadow mask, and the degauss circuit will be inactive for some time while the PTC cools, so you can't get rid of the distortion for a while (unless you have an external degausser at hand).GalFisk 15:47, 12 September 2005 (UTC)

Not only is degaussing good for the monitor, it is greatly enjoyed by many high school students who relish the euphoric projection and kaledeiscopic magic produced as a result of degaussing. how exactly is this specific to high school students? --213.66.39.247 16:16, 25 October 2005 (UTC)

[edit] Thunking sound

High current doesn't make a thunking sound. Does anyone know what it is exactly that makes the sound? Heating of some device? A physical switch?

The sound is the individual wires in the coil vibrating due to mutual repulsion.

Wouldn't that produce a buzz? I have two theories - a mechanical relay solenoid operates to close the circuit (I don't know if this happens, but they do make a similar thunk); or perhaps there is a large magnetostrictive effect - the metal near the deguassing coil therefore strains rapidly, causing the thunk. The magnetostrictive effect more commonly produces a buzz, as in transformers, but perhaps the sudden rush of current causes a thunk instead. LightYear 03:27, 20 March 2006 (UTC)

I would like to assume that magnetostriction would only be audible in a transformer, perhaps one used to feed the degaussing coil in the monitor. There is also definitely an electromagnetic relay being used, as you can hear it in isolation after the thermistor has been tripped once. Here is an article I found http://www.federalpacific.com/university/transnoise/chapter2.html208.102.207.201 12:26, 29 June 2007 (UTC)

[edit] Carl Friedrich Gauss

Shouldn't there be a link to Carl_Friedrich_Gauss, since he probably is the source of the name Gauss. --Ole-p 15:53, 21 July 2006 (UTC)

It Looks that way - I cannot think of anyone else. Reference added. --ChrisJMoor 22:09, 27 October 2006 (UTC)

[edit] Is this correct?

"The mines detected the increase in magnetic field when the steel in a ship concentrated the Earth's magnetic field over it. Goodeve developed a number of systems to induce a small "N-pole up" field into the ship to offset this effect, meaning that the net field was the same as background." Shouldn't be "S-pole up" instead of "N-pole up" ?

[edit] Degaussing ships -- Coil Current Type

I'm guessing the 2000 amp coil is DC (can't think of a reason it would be AC as that would alternate the magnetic field as well as the electricity flow) However, as my only source of the information on degaussing ships is this article, I don't feel like making the edits based upon my assumptions and deductions. I think the current type ought to be noted. BTW, dealing with 2000 DC amps flowing through a coil is a bit freaky, so I'm sure there's some rather interesting side stories that could go along with it. Root⁴(one) 04:49, 7 April 2007 (UTC)

As I read it, the 2000A flows through a straight cable, not a coil. It seems pretty clear to me (from the wording in the article) that this would be DC, since it is designed to produce a bias field. The coiling technique does not specify a current, and I suspect it can be much lower. LightYear 04:17, 10 April 2007 (UTC)

[edit] Alternative methods

I see a reference for this at here possibly: ( How to cite properly, I'm not sure. ) http://www.repairfaq.org/sam/monfaq.htm#mondegaus CRT Basics > Degaussing (demagnetizing) a CRT >
( see paragraph beginning with: "Another alternative..." )

--Joe 166.70.81.97 (talk) 18:32, 28 November 2007 (UTC)