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On Mon, 14 Sep 2020 at 16:16, John Baines via groups.io <jbaines=
[email protected]> wrote:

Hi all,

Alan Victor gave an analysis with R in series with L but no R in series
with C. After some nasty algebra he derived an expression with sqrt (1-
CR*2/L) in the denominator. This is zero when R=sqrt (L/C) and
therefore resonant frequency ( defined as the frequency at which there is
no reactive component) is zero.

No, there’s no reactance at any frequency, not just DC. So you could argue
that it is resonate at all frequencies.



This makes my brain hurt, but not as much as thinking what happens whenR

sqrt(L/C) and the frequency becomes Imaginary?

I have not looked at that.

Thanks David for re-energising my grey matter.

It’s an unusual idea.

BTW, for whoever said I should have wrote it in a fixed Width font, I don’t
know how to do it on my iPhone. I use the gmail app.

73

John

M0JBA

G8WRB


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