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Homework 5_rev2

# Homework 5_rev2 - ECE 2100 Spring 2010 Homework assignment...

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ECE 2100 Spring 2010 Homework assignment 5_ rev2 Due April 23, 2010 Covered: Chapter 10: Amplifiers and Op-amps 1) Prelab: Consider the following differentiating Op Amp circuit. a. Derive a relationship between the input voltage and the output voltage. Assume the Op Amp is ideal. b. Assume the input voltage is a triangular wave. What is the output waveform? Explain! c. Find a relationship between the frequency and peak-to-peak amplitude of the triangular wave and the peak-to-peak voltage of the output waveform. d. Predict the output voltage peak-to-peak value if the input is driven by a 1 volt peak-to-peak, 200 Hz sine wave. 2) Consider the transformer plus full-wave rectifier shown, driven by a 120V (peak) 60Hz voltage (that is, V 1 =120V·cos(240 π t)). Assume that the diodes can be modeled as ideal except with a turn-on voltage of 0.7V. Also assume that the transformer is ideal. a. What will the peak voltage across the capacitor be? b. If the capacitor is loaded with a 100 resistor, sketch the waveform of Vout. What, approximately, will be the difference between the minimum and maximum voltage across the capacitor (that is, what will the ripple be?) c.

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Homework 5_rev2 - ECE 2100 Spring 2010 Homework assignment...

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