EECE 310 Homework 4 with Solution, Fall 2007

American University of Beirut DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING EECE 310 – Electronics I Fall 2007 – 2008 Homework 4 1. Consider the waveform shown in Figure 1. t vs(t) (Volts) Vmax -Vmax T 2T Figure 1 Assume that Vmax = 12 V, and T = 1/50 sec. This voltage is the input to a half-wave rectifier with a capacitor filter. The diode drops 0.8 V when conducting, and the load is a 1000 Ω resistor. a. Calculate the value of the capacitor if the ripple voltage is at most 1 V. b. For what fraction of the cycle does the diode conduct? c. Find the average diode current. d. Find the peak diode current. e. Find the PIV for the diode. 2. Repeat Problem 1 for the case in which the rectifier is a full-wave rectifier using a 4-diode bridge. 3. a. Find and plot the transfer characteristics of the circuit shown below. Assume that when conducting in the forward direction, diodes drop 1 V. b. Plot the output voltage when the source vs is as given in Figure 1, with Vmax = 15 V.