On Jan 25, 11:15*am, Cecil Moore wrote:
Roger Sparks wrote:
As I finished writing the post, I wanted to call attention to the assumption that the reflected power is true power and adds to the amount of energy "stored" on the transmission line. * But "stored" is a word that implies static conditions, and static conditions are not found on a transmission line. *So I substituted "present" for "stored.

The amount of energy existing in a transmission
line is exactly the amount required to support
the measured forward power and reflected power.

If the steady-state forward power is 200 watts,
the reflected power is 100 watts, and the lossless
transmission line is one microsecond long, it
contains 300 microjoules of energy.

Are you sure?

Check your answer by trying 100 kHz sinusoidal
steady-state excitation.

Even easier, ignore the reflected power and
test your assertion just for the forward power.

For fun, work out the line lengths for which your
claim is true.

...Keith