Question 4 : Design an analog pulse-width modulated (PWM) signal generator in order to drive a servo motor. a) What is the definition of modulation and what are pulse-width, pulse-position and pulse-density modulations? b) What is the relaxation oscillator? Design an OpAmp based (comparator based) relaxation oscillator and explain how it works. Does it works in linear or nonlinear (saturation) region? What is the type of the output wave (sinusoidal, rectangular, square etc.)? How is the oscillation frequency calculated? At the end, set the circuit parameters to the values that yields 1 kHz oscillation frequency. c) Which OpAmp building block converts a square wave into a triangle wave. Design this building block with a sufficient output amplitude. Note the frequency of the output signal.
Question 4 : Design an analog pulse-width modulated (PWM) signal generator in order to drive a servo motor. a) What is the definition of modulation and what are pulse-width, pulse-position and pulse-density modulations? b) What is the relaxation oscillator? Design an OpAmp based (comparator based) relaxation oscillator and explain how it works. Does it works in linear or nonlinear (saturation) region? What is the type of the output wave (sinusoidal, rectangular, square etc.)? How is the oscillation frequency calculated? At the end, set the circuit parameters to the values that yields 1 kHz oscillation frequency. c) Which OpAmp building block converts a square wave into a triangle wave. Design this building block with a sufficient output amplitude. Note the frequency of the output signal.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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