Scroll Slow. Have Fun

Re:Scroll Slow. Have Fun by hamiltonkibbe on Thursday January 08, 2015 @12:56PM (#8857715)

Inductors do this as well. The changing magnetic field causes the windings to vibrate, creating an audible sound. The sound my work monitor makes sounds like an inductor to me.

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Re:Scroll Slow. Have Fun by matthewmcg on Thursday January 08, 2015 @02:18PM (#8858283)

Right--or more commonly the cores of old power transformers will softly buzz at 60 hz.

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Re:Scroll Slow. Have Fun by hamiltonkibbe on Thursday January 08, 2015 @06:32PM (#8859757)

You'll find it a lot in switching DC-DC converters as well. The pass inductors that help filter out the switching frequency can make quite a bit of noise, especially at higher loads.

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Re:Scroll Slow. Have Fun by ajcarpy2005 on Thursday January 08, 2015 @05:35PM (#8859494)

My dimmable touch lamp makes an annoying high-pitched sound that is loudest on the dimmest mode. I searched for an explanation and apparently some light bulbs have filaments that are flimsy or light-weight enough that they vibrate audibly.

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Re:Scroll Slow. Have Fun by jloughry on Friday January 09, 2015 @05:12PM (#8864824)

The power supply on the old Apple II "chirped" when switched off. I always understood it to be the oscillator decaying down from 20 KHz to DC in half a second or so.

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