Chapter 5
DC Motors
Chapter Outline
How does Beakman’s motor work?
Shortcomings of Beakman’s motor
Improving the DC motor still further
Is a DC motor also a DC generator?
So when is it a motor and when is it a generator?
Digital and analog – definitions
What’s a load and how do we drive a heavy one?
Disadvantages of an analog DC motor drive
The pulsewidth-modulated (PWM) DC motor drive
Example of a PWM DC motor drive
The reader is, no doubt, familiar with the fact that two magnets repel one another ...
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