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hwset5(2) - Carnegie Mellon University Department of...

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Carnegie Mellon University Department of Electrical and Computer Engineering 18-100 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 V γ , he means what we called V D,ON = 0.6V. 1. Problem 9.8. a) Do the problem as listed. Calculate I D , the value of the diode current. b) Swap the values of Vi and V B and redo the problem. What is I B D now? c) Now let Vi= -10V and V B = +5V and redo the problem. What is I B D now? 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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