PMW stands for "Pulse Width Modulation." It is a commonly used technique in electronics and digital signal processing to control analog devices or circuits using digital signals.
Pulse Width Modulation involves the modulation or varying of the width of pulses in a digital signal, usually square waves, to achieve a desired effect. The technique is based on the principle of varying the duty cycle, which refers to the ratio of the pulse width (on-time) to the period of the signal. By adjusting the duty cycle, the average power or voltage delivered to a load circuit can be controlled.
This modulation technique finds wide applications in various fields, including power electronics, motor control, audio amplification, lighting control, and many digital systems. It offers several advantages such as reduced power dissipation, improved control precision, and higher energy efficiency.
PMW provides a means of digitally controlling analog devices or voltages, essentially converting digital signals to analog outputs. It allows for precise control of systems by varying the duty cycle, which can achieve different levels of power or voltage outputs.
In summary, PMW is a technique that involves varying the width of pulses in a digital signal to control analog devices or circuits. It offers benefits such as energy efficiency and precise control and finds applications in a wide range of electronic systems and devices.
