Carnegie Mellon UniversityDepartment of Electrical and Computer Engineering18-100 Fall 2009 Introduction to Electrical and Computer Engineering Homework 5 - Due Tuesday, October 13, 2009 Please do all numbered problems listed below from the Rizzoni text. For our purposes, an “ideal diode” is one with a turn-on voltage of 0.6V (what Rizzoni calls the “offset diode model”). Where Rizzoni uses Vγ, he means what we called VD,ON= 0.6V. 1. Problem 9.8. a) Do the problem as listed. Calculate ID, the value of the diode current. b) Swap the values of Vi and VBand redo the problem. What is IBDnow? c) Now let Vi= -10V and VB= +5V and redo the problem. What is IBDnow? 2. Problem 9.9. Use a diode voltage of 0.6V. 3. Problem 9.14. Do the problem as listed. Then, flip the diode over and redo it. Make a sketch of Vo vs. Vin as well for a voltage range of Vin between -/+ 10V for both cases. 4. Problem 9.16. Let Vs(t) vary between +/- 10 V. Let the diode be a zener diode with a zener voltage of 2V, placed into the circuit in the direction shown for the signal diode in the problem.
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