DIY Doctor

Light Bulbs Make Ringing Noise?!

Postby OPeter » Thu May 01, 2008 3:40 pm

I have 2 recessed lights that are on a dimmer switch.
Can anyone tell me why they make a high pitch noise when I turn the dimmer down? They are standard recessed 65W bulbs.

Thank You
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Simply Build It

Postby ericmark » Fri May 02, 2008 8:56 am

Read "Flickering light" post similar problem.

Postby markouse » Tue May 06, 2008 7:00 pm

probably a cheap dimmer. the triac in the dimmer switch causing the elements in the bulbs to vibrate due to the magnetisation of the filament from choppy voltage spikes from the triac. buy a better dimmer!
hope this helps.
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