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I have a dimmer switch then on the other side of the room is a single on/off light switch.
Just recently the dimmer is making a buzzing noise which is annoying the hell out of me.
Does anyone know the reason for this and is it safe?
Cheers Ben
[i]the reason for this and is it safe?[/i]
it's slowly going wrong but will probably fail safe.
(disclaimer: I work in IT).
Your dimmer may be running at full load. Count the wattage of all lights that it controls and check with the load capacity of the dimmer.
Dimmers do buzz a bit - i believe due to the resistor inside. If its buzzing loudly and if its a cheap or old one it may be worth replacing it with a better quality/newer one - provided nothing else has changed on the circuit.
dimmers can often buzz at 50Hz, especially as they age and the components (inductor primarily) vibration age (either the wire vibrates around the core, or the whole inductor vibrates on the pcb). Generally they fail safe, when the triac pops. If it's that annoying, buy a new one, they are not expensive!
You haven't stuck an energy saver bulb in the circuit? They don't like it up'em!
Cheers guys that's that sorted then.
Transformers hum but thats because they don't know the words 😆