On Sun, 06 Jun 2004 20:44:46 -0500, Cecil Moore wrote:

Walter Maxwell wrote:
Cecil, why are you avoiding trying to understand the basis for his erroneous
concept of adding forward and reflected voltages to obtain total forward
voltage? You don't even respond to my discussion on this point.

I'm not trying to avoid it, Walt. Dr. Best simply doesn't do that. V1 is
a *forward-traveling voltage*. V2 is a *forward-traveling voltage*. Their
sum is VFtotal, the *total forward-traveling voltage*. He does NOT add a
forward voltage to a reflected voltage. V2 is the *forward-traveling* re-
reflected voltage equal to VR2(RHO).

When the reflected voltage is acted upon by the reflection coefficient, it
becomes a forward-traveling voltage. That you think Dr. Best is adding forward
and reflected voltages, is the source the present misunderstanding. The
individual Poynting Vector for V1 points toward the *load*. The individual
Poynting Vector for V2 points toward the *load*. V1 and V2 are coherent
component waves, both flowing toward the load so, of course, they superpose.

Cecil, I know V2 is the re-reflected voltage, but what I'm trying to persuade
you is that they do NOT superpose to form the forward voltage--they superpose
only to form the standing wave. You've go to accept that the standing wave
voltage is NOT the forward voltage. If you can't come to realize this is the key
to the problem I'm going to have to give up.

Incidentally, you say tau is 1+ rho as the transmission coefficient, which when
muliplied by input voltage yields forward voltage. I thought (1 - rho^2) is the
transmission coefficient. These two terms are not equal. Can you explain the
difference?

Walt