Vithayathil focuses on the switching characteristics of devices. He emphasizes that in power electronics, a semiconductor is rarely used in its linear region; it is either a "perfect" switch or a "perfect" insulator.
This section is often cited as the strongest part of the book. It covers the transition from AC to DC using thyristors, providing the mathematical foundation for industrial DC motor control.
A deep dive into Pulse Width Modulation (PWM) and harmonic reduction.