PWM

Question 1

Definition:

Answer 1

Pulse Width Modulation is a modulation technique where the duty cycle (the ratio of the pulse duration to the total period) of a periodic signal is varied to encode information.

Question 2

Basic Operation:

Answer 2

PWM generates a square wave signal where the width of the pulse is varied while the frequency remains constant.

The duty cycle is often expressed as a percentage and represents the ON time relative to the total period.

Question 3

Applications:

Answer 3

PWM is extensively used in controlling the speed of motors, brightness of LEDs, voltage regulation, and in various power electronics applications.

Question 4

Advantages of PWM:

Answer 4

Efficiency: PWM is efficient in controlling power delivery as it allows for rapid switching between high and low states, minimizing power loss.

Precision Control: It enables precise control of average power, making it suitable for applications requiring fine-tuning.