What Is Pulse Width Modulation (PWM)?

Did you know that the next time you turn on your AC/DC motor, you're sending a signal to it? That's right! PWM is the modulation process or technique used in most communication systems for encoding the amplitude of a movement right into a pulse width or duration of another signal, usually a carrier signal, for transmission. So, please give it a little wave the next time you turn on your AC/DC motor. PWM is an alteration process used in most conduct systems for encoding the amplitude of a signal right into a pulse width or duration of another signal, usually a carrier signal, for transmission. Although PWM is also used in communications, its primary purpose is to control the power supplied to electrical devices, especially to inertial loads such as AC/DC motors. It's also useful for video and audio reproduction (especially when combined with pulse-code modulation) because it can represent analog signals in digital form. Digital data streams are often stored on magnetic tapes or discs, vulnerable to damage from dirt and dust particles. To minimize this damage and make it easier for computers and other devices to read these data streams accurately when they're later played. PWM techniques can be used so that each bit value corresponds directly with one specific frequency component within a range of frequencies (e.g., 0-10 kHz). If you've ever been to a buffet, you know power loss is a significant problem. The good news is that PWM can help you prevent it! PWM is a fantastic technology that allows for more efficient power use. It works by turning on and off electricity—which means no more power loss through your electrical pathways as heat! That's right, no more wasted energy heating your electrical courses! Since PWM turns off power instead of limiting it, you can use it in various applications—from controlling DC motors and light dimming to heating elements.