Revisiting the Power Explanation
On Mar 23, 9:21 pm, Cecil Moore wrote:
Keith Dysart wrote:
You are trying too hard. Even your problem statement said
"no circulator". So I offer a simple example of such a
generator: a voltage source connected by a 450 Ohm resistor
to the output terminal. Voila: a generator with 450 Ohm
output impedance.
The generator is an *active dynamic source*. It does
not have a 450 ohm output impedance just because you
install a 450 ohm resistor. Just as soon as reflected
waves are allowed to reach the source, the source
impedance dynamically shifts away from the 450 ohm
value.
I notice that you've skipped the important question posed in
the example. I'll try again.
Use my generator: voltage source, 450 Ohm resistor to the output.
No circulator.
Drive your system: 450 Ohm line terminated with a 75 Ohm TV receiver.
TVSG-----1000 feet 450 ohm ladder-line---75 ohm TV RCVR
Ghosts or no?
If no? Where did the 'reverse power' go?
If ghosts? Well, think very carefully before choosing this option
because there aren't.
....Keith
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