Folks, please note that we have had serious e-mail screw ups here this week,
and it is probable that e-mails to me have bounced, and that sent e-mails
have disappeared without making it to the outside world. If I haven't
answered anything, please try again.
Rich asks;
>? Would this sort of resonance be likely to register on a
dipmeter?
Definite maybe. It would depend on the network, and to which element you
coupled the dip meter. Bear in mind that the dip meter does not find
resonance, only the frequency of maximum absorption of the element to which
it is coupled, which is not the necessarily the network 'resonant frequency'
by the previously stated strict mathematical definition.
>>>? There is more than one way to figure Q.
>>
>>Evidently - like to tell us your definition?
>>
>? I don't have one.
Logically, that statement falls apart. If you don't have a definition for Q,
how do you know that there is more than one way to define Q?
Q is defined as Energy stored/Energy lost. As reactive components by
definition store energy and don't dissipate it, Reactance/resistance is the
same thing as Q - or, if you like , Xs/Rs =Q or Rp/Xp =Q.
>? Do we agree that an L-network is never resonant?
No. Further, you have not yet given a rigorous definition of resonance
capable of being modelled mathematically. Under those circumstances, you
can't apply any formulae, or talk about any approximations. Any talk of GDOs
is pure green fingered approximation work, unworthy of offer to a serious
debate on the applicability and accuracy of published equations.
73
Peter G3RZP
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