On 9/13/2012 5:19 PM, Tony wrote:
Assuming it is a house wiring problem and not an appliance, what would
cause it to come on in the evening and stay on till morning? Would
temperature and humidity cause this?
I suspect a combination of things -- a wiring problem that is making the
noise source radiate (or conduct) more effectively. The thing that
makes me suspect house wiring is that you said you switch a light and
the noise changes. THAT'S why I said you should check your wiring very
carefully, and all of us should anyway. The law of averages says that
whoever did your house wiring made at least one mistake. Some mistakes
are a nuisance, some are very dangerous.
The only lights that could GENERATE noise are fluorescents or those that
have a DC power supply. It's become quite common for most track
lighting to use a DC power supply, and they are virtually all switching
power supplies.
73, Jim K9YC
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