Chapter 10, Problem 10.39P

In the transmission line of Figure 10.20, $Z_0=50\Omega$, and $R_L=R_g=25\Omega$. The switch is closed at t = 0 and is opened again at time t = l/4v, thus creating a rectangular voltage pulse in the line. Construct an appropriate voltage reflection diagram for this case, and use it to make a plot of the voltage at the load resistor as a function of time for 0 < t < 8l/v (note that the effect of opening the switch is to initiate a second voltage wave. whose value is such that it leaves a net current of zero in its wake).