Q-factor of an inductor


by Dominique
Tags: inductor, qfactor
Dominique
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#1
Jan29-09, 04:15 PM
P: 4
Hi all,

For a resonant system, there is usually a transfer of energy into another kind of energy back an forth (kinetic to potential; electric to magnetic, etc). for an LC tank or an RLC circuit, we know that the energy is transfered from as an electric field between the capacitor's plate to a magnetic field around an inductor coil.

But, how come we can define a q-factor for an inductor alone?

Thank you very much for your help :)
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f95toli
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#2
Jan29-09, 05:00 PM
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You can't.
The Q-factor is a measure of how closely a real inductor comes to behaving like an ideal inductor; an ideal inductor would have an infinite Q at all frequencies but real inductors are made from resistive wire etc so there are always losses.
waht
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#3
Jan29-09, 06:02 PM
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You can define a Q-factor for many situations where oscillation occurs.

Inductors, and capacitors have a Q when are subjected to AC. It sort of is a measure of deviation from an ideal component as said.

x_goose_x
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#4
Mar3-09, 11:24 PM
P: 1

Q-factor of an inductor


Quote Quote by Dominique View Post
But, how come we can define a q-factor for an inductor alone?
As usualy, wikipedia has the answer:

http://en.wikipedia.org/wiki/Inductor#Q_factor


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