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Old March 23rd 06, 10:35 AM posted to rec.radio.amateur.antenna
Cecil Moore
 
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Default Current through coils

Roy Lewallen wrote:
If, however, you look at the currents in
and out of the *network* you'll see that they're different, because of
current going to ground through the C.


The main effect in a standing wave environment are the forward
and reflected phasors rotating in opposite directions. The
standing wave current is ZERO when those phasors are 180 degrees
out of phase. The standing wave current is maximum when those
phasors are in phase. "Current going to ground through the C"
is not even required.

But with zero length, there
can be no standing waves inside the inductor.


You keep saying stuff like this as if a zero length inductor
actually existed in reality. Wake up, Roy, and smell the
roses. That zero length inductor exists only in human minds.


When you look at the currents reported by EZNEC for the model on Cecil's
web page, the current at the top of the coil is the equivalent to the
*network* current described above. It's the current flowing through the
inductance minus the current being shunted to ground via the C between
the coil and ground.


Huh? How do you explain the current at the top being greater than
the current at the bottom of the coil? Is the coil sucking current
from the ground?
--
73, Cecil http://www.qsl.net/w5dxp
 
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