16 Nov
2006
16 Nov
'06
4:40 a.m.
Carlo Capocasa wrote:
Can you give me a hint on how to identify an inductor?
My notebook case
An inductor is a coil of wire wound (several turns) around some kind of
core. If it's an encapsulated type it may be harder to identify.
http://en.wikipedia.org/wiki/Inductor
is open right now and the whine comes from a place out
of or near the
CPU. Also, the whine comes when I start Jack at low latencies; I don't
Ok - that's likely the supply regulators.
quite understand what the purpose of loading the power
supply would be;
I've hooked up my Palm Zire or a USB microphone (which sounded like
crap, but did load the power supply) and experienced no additional hum
whatsoever.
You're not expecting additional hum.
An inductor smooths out current flow in circuits by storing energy
magnetically. Because there's a magnetic field (coil of wire and
electric current), there's also a force exerted on the coil (think
electric motor) which _can_ cause the coil to physically move in
sympathy with the current. The physical movement of the coil acts like
a loudspeaker - but this isn't a tune you can dance to.
Do you have a stethoscope? Unload the machine and get that noise back.
Now listen. Can you identify the component?
R