the Q factor could be derived from the modulation bandwidth of an
oscillator [ the "old way" of measuring the Q of resonator of the
running oscillator's ], therefore if we look the fluctuation spectrum of
the frequency of an oscillator we could determine the Q. Any circular
movement could be seen as the source of a harmonic oscillation.
73
KJ6UHN
Alex
On 7/29/2016 9:28 AM, Attila Kinali wrote:
On Fri, 29 Jul 2016 03:29:27 -0500
David <[email protected]> wrote:
Capacitors and inductors have an associated Q while lacking a resonate
frequency except for parasitic elements. Their Q increases with
frequency up to a point; does that apply to a spinning body? I guess
it depends on the loss mechanism.
The Q of an inductor (or capacitor) is defined at a specific frequency.
You can see it as the Q factor that would be achieved, if the inductor
(capacitor) would be paired up with an ideal capacitor (inductor) with
a value such, that it would result in the specified frequency.
Hence, if you increase the frequency, the Q factor increases for an inductor.
Conversly, the Q factor of an capacitor decreases with increasing frequency.
See also:
https://en.wikipedia.org/wiki/Inductor#Q_factor
https://en.wikipedia.org/wiki/Capacitor#Q_factor
Attila Kinali
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