ECE 4760: Homework 4

  1. Describe in detail why there is a diode across the motor in lab 4. Include direction of inductive current flow during each part of the PWM cycle.
  2. Explain why you need hysteresis on the comparator in lab 4.
  3. Describe how you are going to break down the exercise into tasks.
  4. Describe the variables which will need to be shared between tasks.
  5. Assuming 1000 rpm for the fan motor, what prescalar setting will you use on timer 2?

January 5, 2010