The Buzz Behind the Glow: Sorting Out a Humming LED Dimmer Circuit
That faint buzz from your new LED filament bulbs is rarely a sign of imminent disaster—but it is a sign that the lamp and the dimmer are having a disagreement. Here is how to work out which one is complaining, what a load capacitor genuinely fixes, and when the sensible move is to return the bulb rather than reach for a screwdriver.