a. An ideal diode blocks the flow of current in the direction opposite that of the diode’s arrow symbol. It can be used to make a half-wave rectifier as shown in Figure P25a. For the ideal diode, the voltage νL across the load RL is given by
Suppose the supply voltage is
where time t is in seconds. Write a MATLAB program to plot the voltage νL versus t for 0 ≤ t ≤ 10.
b. A more accurate model of the diode’s behavior is given by the offset diode model, which accounts for the offset voltage inherent in semiconductor diodes. The offset model contains an ideal diode and a battery whose voltage equals the offset voltage (which is approximately 0.6 V for silicon diodes) [Rizzoni, 1996]. The half-wave rectifier using this model is shown in Figure P25b. For this circuit,
Using the same supply voltage given in part a, plot the voltage νL versus t for 0 ≤ t ≤ 10; then compare the results with the plot obtained in part a.
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