# hw1 - EE 101 Prof A El Gamal Handout 1 Jan 9 2003 Homework...

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EE 101 Handout # 1 Prof. A. El Gamal Jan 9, 2003 Homework Assignment #1 Due: Thursday 1/16 1. Modelling a compact disc player. The (left or right channel) output of a typical CD player can be modeled as a voltage source that is able to produce voltage between - 5V and +5V and currents between - 10mA and +10mA without distorting. The output of the CD player is fed into a receiver that can be modeled as a resistance of R Ω. (a) For what values of R is the maximum output voltage of the CD player limited by the ± 5V voltage limit, and for what values of R is it limited by the ± 10mA current limit? (Typically, R exceeds 10kΩ.) (b) For R = 10kΩ, ±nd the maximum power in Watts that can be transferred from the CD player (say, from the Left channel output) into the receiver (via the Left channel CD input). 2. A typical 10MΩ 1 / 8W resistor is 7mm long. As the voltage across it is increased, which is likely to happen ±rst: (a) the 1 / 8W power rating is exceeded, or (b) an arc forms from lead to lead? Note: You can assume that the breakdown voltage of air is 700V/mm.

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## This note was uploaded on 04/06/2010 for the course EE 102 taught by Professor Pingli during the Fall '08 term at Shanghai Jiao Tong University.

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hw1 - EE 101 Prof A El Gamal Handout 1 Jan 9 2003 Homework...

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