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Homework 7: BME 302L, Spring 2009
Due: Tuesday May 5 (drop at BME front desk)
Preview accepted Tuesday April 28
Note: The lowest of your seven homework grades will be dropped in the computation of your final
homework score. If you have good grades in you first 6 homework sets, you may decide to not turn in this
homework. You can use the exercises for practice and preparation for your final exam. If you missed a
homework or received a low score on a previous homework, you can use this homework set 7 to improve
your homework score.
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Exercise 1 (10 points):
From Floyd Textbook, Chapter 12 (pp. 645 – 655), problem 14. Also Determine
the input and output impedances for each circuit. Assuming that a 1 k
Ω
load is attached to the output
and a 10 mV source attached to the input of the amplifier, what would be the total current sourced by
the opamp?
Exercise 2 (10 points):
From Floyd Textbook, Chapter 12 (pp. 645 – 655), problem 15. After you found
the resistor Rf, determine the input and output impedances for each circuit. Assuming that a 1 k
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 Fall '08
 Maarek
 Voltage divider, Resistor, Electrical impedance, Floyd textbook, center voltage, voltage level detector

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