Richard Clark wrote:
Well with the wisdom accumulated thus far you don't know how to use
and or interpret EZNEC (fairly obvious). Let's look at the howlers:

forward current is always greater than reflected current,

compared to:
the current flowing into... 0.18 amp
The current flowing out ... is 0.2 amp

And I'm howling at your ignorance. The current flowing "into"
and "out of" is *net* current, not forward or reflected current.
The net current is the phasor sum of the forward and reflected
currents. They are not the same thing at all.

which describes the same direction: into bottom - out of top.

If the current into the bottom is at zero degrees and the
current out of the top is at 180 degrees, they are flowing
in opposite directions which is not "the same direction".
--
73, Cecil, W5DXP

On Thu, 05 Feb 2004 15:50:37 -0600, Cecil Moore
wrote:
The net current is the phasor sum of the forward and reflected
currents.
....
they are flowing
in opposite directions
Uh-Huh

Richard Clark wrote:

wrote:
The net current is the phasor sum of the forward and reflected
currents.

...

they are flowing
in opposite directions

Uh-Huh

Now you are resorting to selective editing to completely change the
meaning. Tsk, Tsk, Richard. I can do the same thing by editing out
every "not" in your postings and replacing it by '...'.
--
73, Cecil http://www.qsl.net/w5dxp



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On Mon, 09 Feb 2004 09:01:34 -0600, Cecil Moore
wrote:

Richard Clark wrote:

wrote:
The net current is the phasor sum of the forward and reflected
currents.

...

they are flowing
in opposite directions

Uh-Huh

Now you are resorting to selective editing to completely change the
meaning. Tsk, Tsk, Richard. I can do the same thing by editing out
every "not" in your postings and replacing it by '...'.
I noticed you do not retract your statement but whine about analysis
Tsk, Tsk

Richard Clark wrote:
I noticed you do not retract your statement but whine about analysis
Tsk, Tsk

Nothing to retract, Richard. The direction of AC current flow is merely
a convention. In a balanced transmission line system, if the differential
current is flowing toward the load in one wire, it is flowing away from
the load in the other wire. Otherwise, it would be common-mode current.
At certain times during the RF cycle, the forward current phasor and the
reflected current phasor in one wire are both pointed toward the load.
In the other wire, they are pointed toward the source. 1/2 cycle later,
things are reversed.

Draw a DC circuit with a battery and a load. In one wire, the load
current is flowing toward the load. In the other wire, the load current
is flowing away from the load toward the battery. So we reference the
wire connected to the '+' battery terminal which is carrying the current toward
the load and call the other wire a return path. But balanced AC has no such
distinction. There is no positive terminal or negative terminal on the
AC generator except by convention. Incidentally, Edison shared your
confusion.

Taking the RF generator as the reference, a freeze-frame snapshot of the
RF current maximum points up and down a matched balanced transmission line
may result in:

------------------------------------------
Source Load
------------------------------------------
--
73, Cecil http://www.qsl.net/w5dxp



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