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Thread ID: 65027 2006-01-05 00:29:00 Fluorescent lights and pc's hamstar (4) Press F1
Post ID Timestamp Content User
418383 2006-01-05 00:29:00 hey guys,

wanna put a fluorescent light under my desk so I can see when i'm working on my pc.. and to give a cool white light effect...

Any chance of magnetic interference affecting my multiple case-side-missing computers?
hamstar (4)
418384 2006-01-05 00:39:00 No. :D Graham L (2)
418385 2006-01-05 00:40:00 Doubt it. But maybe you can get some led type lights which'll be fine. Greg (193)
418386 2006-01-05 00:40:00 weeeeeeeeee! :D hamstar (4)
418387 2006-01-05 01:46:00 I've seen reports that fluorescent transformers can cause Radio Frequency Interference (RFI), and interfere with radios, televisions, computers, etc kingdragonfly (309)
418388 2006-01-05 02:24:00 Conventional fluorescents tubes have ballasts, not transformers. The starter has a snubbing capacitror across its contacts. The tube, because it has a plasma arc, radiates some RF noise. It's not designed to be a good antenna, so people quite happily use television sets, radios, and computers near them. The majority of computers in offices are near a lot of fluorescents.

Compact fluorescents do have a couple of transformers: usually one tiny toroid and one very small EI core which produces the high voltage at a few tens of kHz. People happily use television sets, radios and computers near CFLs ...

Don't believe every "report" you hear. Anything electrical can produce RFI. Television sets, radios, computers (especially if they have "sides off" :D), motor cars, etc, etc, can produce RFI. Even fluorescent lamp fittings can produce RFI. ;) But it's a matter of degree. Most countries have standards which electrical goods must conform to. Apart from safety, there are limits to the level of RF any product may radiate.
Graham L (2)
418389 2006-01-05 02:27:00 I've seen reports that fluorescent transformers can cause Radio Frequency Interference (RFI), and interfere with radios, televisions, computers, etc
No fluorescent fitting certified for use in NZ should create EMI . Magnetic fields from the older coil-type ballasts would interfere with a monitor if too close, but the modern electronic ballasts are usually ok .

Any fluorescent will interfere with AM radio to a certain extent because the tube extinguishes and restrikes once every half cycle of the power supply, be it 50Hz mains or a higher frequency electronic ballast .

Your computer will be OK, the biggest problem might be kicking the tube and breaking it, they are not designed to be used in low locations such as you are proposing .

Cheers

Billy 8-{)
Billy T (70)
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