PWM is used in many applications, ranging from communications to power control and conversion. For example, the PWM is commonly used to control the speed of electric motors, the brightness of lights, in ultrasonic cleaning applications, and many more.

What is PWM and its applications?

Pulse Width Modulation(PWM) is a digital technology that uses the amount of power delivered to a device that can be changed. It generates analogue signals by using a digital source. ... The duty cycle and frequency of a PWM signal determine its behaviour.

Why is pulse width modulation useful?

Pulse Width Modulation (PWM) uses digital signals to control power applications, as well as being fairly easy to convert back to analog with a minimum of hardware. If either voltage or current is near zero then power will be near zero. PWM takes full advantage of this fact.