Jim Kelley wrote:

Cecil Moore wrote:
It appears that the DC model adapted for AC has seduced a lot of
people into ignoring the most basic characteristics of an AC signal
which is somewhat like reversing the polarity on a DC battery.

Cecil, OM. The point you so hard-headedly and steadfastly refuse to
acknowledge is that YOU are the one trying to employ a "DC model" when
describing alternating current. AC doesn't go into one end of something
and then come out the other end of that thing. If you would simply
acknowledge that fact then maybe we wouldn't have to endure any more of
your 2nd Grade electricity tutorials.

Here's a snapshot of the current maximum points, including direction of
current flow, in a 2 WL matched transmission line. The next snapshot is
the same thing 1/2 cycle later. Note: Current is going into the bottom
of the source and coming out of the top. Same for the load.

*----------------------*
| |
Source Load
| |
*----------------------*



*----------------------*
| |
Source Load
| |
*----------------------*

1/2 cycle later: Current is flowing out of the bottom and into the top
of the source. Same for the load.

The transmission line is 2 wavelengths long. That means that instantaneous
current in the transmission line is simultaneously flowing toward the load
and toward the source at different points up and down the line.

AC is akin to reversing the polarity of a battery. What happens to the
direction of current flow through the load when the polarity of a
battery is reversed? Don't you realize that if current is flowing out
of the '+' terminal of a battery, that same current is flowing into the
'-' terminal?
--
73, Cecil, W5DXP