PWM (Pulse Width Modulation)

Pulse Width Modulation (PWM) is a technique used to control the amount of power delivered to a device by switching it on and off rapidly. By adjusting the duration the signal stays on (the "pulse width") within each cycle, PWM effectively varies the average power output. For example, a longer "on" time results in more power, while a shorter "on" time results in less. This method is commonly used in motor speed control, LED dimming, and power regulation, allowing precise control over energy flow without wasting energy as heat.