[AMPS] Pi-Net math

Peter Chadwick Peter_Chadwick@mitel.com
Thu, 5 Aug 1999 10:29:02 +0100


Tom says:

>Most people define resonance as a system with finite bandwidth 
>where voltage and current are exactly in-phase (or exactly 180 
>degrees out-of-phase). 

I replied to Rich before I read Tom's e-mail - I was out yesterday. If you
remember, I said:

"my definition of resonance, which is that a particular frequency designated
the resonant frequency, in a network consisting of inductive, capacitive and
resistive elements, the applied voltage and current are in phase."

The 180 degrees out of phase doesn't look right at an immediate glance, but
otherwise the only difference between my definition and Tom's is that
knowing how 'picky' people are on this reflector, I've spelled it out - bit
like a lawyer really, said to say.

If you  have the right definition of resonance, then there is no argument.

73

Peter G3RZP


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