Art Unwin KB9MZ wrote:
Is there a fallacy in this aproach ?

The 'gotcha' in such an approach is why distributed network analysis
had to be invented. The problem is ascertaining whether the model one
is using is sufficient for the task. One can be using the wrong model
and not realize it. It appears that is the problem that W8JI has
encountered with his insistence that net current through a coil is
always constant. If there are two constant currents flowing through a
real-world coil in opposite directions, the superposed net current
will not be constant.

Any time there exist forward waves and reflected waves, a lumped circuit
analysis would be suspect. Sometimes one gets the same results as a
distributed network analysis and sometimes not. What I do is keep the
distributed network analysis as a concept in the background to verify
the validity of any lumped circuit analysis.
--
73, Cecil http://www.qsl.net/w5dxp



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