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Dimmer switches can set a nice mood, but not if they’re buzzing like an angry hornet. Dimmer switches work by turning the current on and off to make a light appear less bright—but that puts a lot of stress on an incandescent bulb. If your dimmed light bulbs are humming, try one of two quick fixes. Change the bulb out for a new one with a stronger filament, or upgrade the dimmer switch to one that alternates the current more gently.
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