# HW8 - Escuti/Masnari 2007 ECE200 Fall 2007 Homework 8...

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Escuti/Masnari 2007 ECE200 – Fall 2007 – Homework 8 Amplification and Operational-Amplifiers Page 1 of 5 Problem 1: [12 pts] The signal shown below is applied as the input signal to four different amplifiers with the given transfer characteristics. Sketch the output signal for each transfer characteristic (preferably by hand, but certainly with clarity and labels). t V -1 -2 -3 1 2 3 1 2 -1 -2 -3 3 60 40 20 -40 -60 V in V out 1 2 -1 -2 -3 3 60 40 20 -40 -60 V in V out 1 2 -1 -2 -3 3 60 40 20 -40 -60 V in V out 1 2 -1 -2 -3 3 60 40 20 -40 -60 V in V out (b) (a) (c) (d)

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Escuti/Masnari 2007 ECE200 – Fall 2007 – Homework 8 Amplification and Operational-Amplifiers Page 2 of 5 Problem 2: [12 pts] Consider the op-amp circuit below. (a) Find an equation for the output voltage V out of the circuit below in terms of the resistors and the given voltages. Note that R var is a potentiometer. (b) The circuit at left is essentially a voltage regulator that is controlled by the potentiometer. Given that R f = 10 k Ω and that R var has a range from 0.5 Ω to 100k
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HW8 - Escuti/Masnari 2007 ECE200 Fall 2007 Homework 8...

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