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Why do light buzz?

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Anonymous

16y ago
Updated: 9/17/2019

most likely from all of the electricity flowing through them.

Incandescent lights do not buzz. Fluorescent fixtures with a non electronic ballast can develop a buzzing or humming noise. The ballast has a wire coiled around an iron laminated core. As the ballast ages the laminations start to separate and the alternating current going through the ballast makes the iron layers vibrate (hitting each other) causing the hum or buzz sound.

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Wiki User

8y ago

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