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Old March 19th 06, 03:32 AM posted to rec.radio.amateur.antenna
Cecil Moore
 
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Default Current through coils

Gene Fuller wrote:
I am attaching a few of your quotes in this thread. Sorry to hear about
your total loss of short term memory.


I'm in a learning process here and using the scientific method to
correct my mistakes. Isn't that what rational people do?

[Direct quotes from March 5-7]
Standing wave current is a net charge flow of zero.


I was corrected on that one and already admitted my mistake. The
charges obviously migrate from end to end in the antenna.

Surely you understand that standing waves in a transmission line don't
flow - they just stand there, which is why they are called "standing
waves". Exactly the same principle applies to standing wave antennas.


This means the same thing as your posting that phase is gone.
A phasor requires a rotating phasor to exhibit flow in the
real sense of the word. Standing wave current doesn't possess
a rotating phasor so it is not flowing in the normal sense of
current flow.

If you think standing wave current is flowing, how do you explain
0.17 amps at the bottom of the coil and 2.0 amps at the top?

http://www.qsl.net/w5dxp/current.htm bottom of page

The two traveling waves have to be analyzed separately and then
superposed to obtain valid results.


Don't see anything wrong with that. If one uses the standing wave
current phase to try to measure phase shift through a coil, one is
making a mistake as has been demonstrated here.

The currents that are doing the flowing are the underlying current
components, the forward current and the reflected current and they are
close to equal. Everything you say about a coil is true for the forward
current and the reflected current. It is simply not true for the
standing wave current which is just a conceptual construct and not a
flowing phasor at all.


You said it yourself, Gene, phase has disappeared from standing wave
current. Do you understand the implications of your statements?
--
73, Cecil http://www.qsl.net/w5dxp
 
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