Richard Harrison wrote:
Say Zo is 150 ohms. 100 watts into Zo is 123.5 volts.

I get 122.5 volts. :-)

10 watts facing
the 100 watts presents 38.7 volts. Power direction is determined by the
123.5 volt source, not by the 38.7 volt reflection, at the match point.

Essentially all you are saying is that net energy flows from the source
to the load. I agree but it has nothing to do with "facing off". Coherent
voltage waves flowing in opposite directions are unaffected by each other.
Coherent voltage waves flowing in the same direction merge into one wave.
The events that happens at an impedance discontinuity are reflections which
causes coherent waves to flow in the same direction and therefore merge. It
is explained in my part 1 article on my web page.
--
73, Cecil http://www.qsl.net/w5dxp
"One thing I have learned in a long life: that all our science, measured against
reality, is primitive and childlike ..." Albert Einstein



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