Thread: EHEIM pump EMI
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Unread 05-22-2002, 03:05 PM   #12
bigben2k
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Join Date: May 2002
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Yep, right on! We really don't have to worry about EMI from a pump inside a case. (Shielded or not, if you ask me).

Monitors though are sensitive to fixed magnets (and EMI too!), because the point of color is actually an electron beam hitting the screen, and it is directed by magnetic deflection (hence the big coils behing the tube). So a magnet will make a monitor/tv do weird things...

Not to say that they'll break or anything: they'll just discolor, temporarily. Monitors usually degauss themselves on startup now (wasn't like that 10 years ago). TVs though, don't usually have a degauss circuit...
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