Pulse width modulation (PWM), the abbreviation of the English " Pulse Width Modulation" , referred to as pulse width modulation, is to use the digital output of the microprocessor to control a very effective technology to analog circuits, widely used from the measurement, communications to power control and transform many areas. With the development of electronic technology, a variety of PWM technology, including: phase voltage control PWM, pulse width PWM method, random PWM, SPWM method, line voltage control PWM procedures is the use of PWM DA converter control

pwm_led.txt

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