3 ms·
Right--or more commonly the cores of old power transformers will softly buzz at 60 hz.
by matthewmcg 12y ago
Right--or more commonly the cores of old power transformers will softly buzz at 60 hz.
- ajcarpy2005 12y agoMy 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.
- hamiltonkibbe 12y agoYou'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.