hw5sol - Carnegie Mellon University Department of...

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Unformatted text preview: 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 Problem 1: Rizzoni 9.8,10 points a.) V i =12V, V B =15V, assume diode is conducting, and current I D is counterclockwise ? ? 10 ? , ? ? 5 = 0 15 ? 10 0.6 ? 5 12 = 0 ? 15 = 2.4 ? = 160 ? Therefore diode is conducting because diode voltage and current is consistent. b.) V i =15V, V B =12V, assume diode is not conducting = ? = 12 15 = 3 ? = 0 Therefore diode is not conducting. c.) V i =-10V, V B =5V, assume diode is conducting, and current I D is counterclockwise ? ? 10 ? , ? ? 5 = 0 5 ? 10 0.6 ? 5 ( 10 ) = 0 ? 15 = 14.4 ? = 0.96 Problem 2: Rizzoni 9.9,10 points Assume diode is not conducting KVL: clockwise current I i (left loop) and I B (right loop) 5 + 5 = 0 12 5 + 5 5 = 0 10 = 17...
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This note was uploaded on 12/13/2009 for the course ECE 18100 taught by Professor Williams during the Fall '07 term at Carnegie Mellon.

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hw5sol - Carnegie Mellon University Department of...

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