![]() The benefits of using digital PWM control over analog circuitry are: PWM is used in a wide range of applications, from power control and conversion to communications and measurements. It can be employed to vary the intensity of light put out by an LED, for example.Ī PWM signal can be smoothed with a low-pass filter to create an analog output whose value is proportional to its duty cycle this provides a way of creating a simple D-to-A (Digital-to-Analog) converter. By varying the duty cycle (the percentage of the time that the PWM output is in its active state), the average value of the PWM signal can be changed. These waveforms can be used to drive stepper motors, servo-motors, AC and DC relays, LEDs (Light-Emitting Diodes), and many other actuators. A pulse width modulated signal is a periodic digital output waveform with a controlled period, duty cycle, and polarity. ![]() ![]() Pulse width modulation (PWM) allows you to control analog circuits and actuators with a processor's digital outputs. Mosaic embedded designs » Embedded applications » Pulse width modulation, PWM control Mosaic's embedded microcontrollers offer PWM control What is PWM?
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