05 Switched operation in Power Electronics

The video tutorial discusses the use of transistors as variable resistors and the challenges of power dissipation in linear operation. It introduces Pulse Width Modulation (PWM) as a solution to improve efficiency by switching transistors on and off, reducing power loss. The tutorial compares linear and PWM modes, explaining how PWM can deliver desired voltage levels without excessive power dissipation. It covers power calculations in PWM mode and highlights the importance of proper transistor operation to avoid damage. The video concludes with practical considerations and the benefits of using PWM in power electronics.

How does the average power calculation differ between linear and switching operations?

What are the potential consequences of not achieving true saturation in a transistor?

What factors should be considered to minimize switching losses in transistors?

In what ways can PWM improve the efficiency of power converters?