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On Tue, 8 Sep 2020 at 14:55, John Baines via groups.io <jbaines=
[email protected]> wrote:

My first guess was that the resonant frequency is unchanged by any value
of R, though Q is certainly changed.



A quick drawing of the vector diagram seems to agree with this.

That’s true for series connected devices, not parallel.

As someone has shown, the impedance is purely real at all frequencies.

73

John

M0JBA

G8WRB

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