mkgrady
Senior Member
- Location
- Massachusetts
A customer complained of a high pitch hum on a 3 way dimmer. She asked me to change the dimmer. It is better but the new one still makes noise. It seems louder at the bulb than at the dimmer. It is running a 200 watt incandescent bulb in a fixture over a kitchen table. I could not find a max rating on the lamp holder but I suspect it is rated no more than 100 watts. I suggested she put a 100 watt bulb in it to see if the noise stops.
I have heard this type of noise when dimming cfl's but not regular bulbs. Any ideas what could be causing the high pitch noise?
I have heard this type of noise when dimming cfl's but not regular bulbs. Any ideas what could be causing the high pitch noise?