Figure 28.
The 50-Volt Pulse Travels Along the ATL.
a. In the next instant, the 50-volt pulse starts to travel along the
line and we see in Part B of Figure 28 that the 50 volts is now present
across points (3) and (4).
b. Still, another instant of time later and our voltmeters in Part C of
Figure 28 tell us the pulse has traveled as far as points (5) and (6).
c. Finally, as shown in Part D of Figure 28, the 50-volt pulse has
traveled to points (7) and (8) at the end of the line.
11. What happens at the open end of the line?
When the energy traveling along the transmission line reaches the
open end of the line, the current drops to zero.
This rapid change in
current induces a voltage that is equal to the original (incident) wave in
amplitude and polarity.
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