##  [Pulse Width Modulation](/pulse-width-modulation) 

  ##  [Pulse Width Modulation](https://engineering.quantumdictionary.io/pulse-width-modulation-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A switching technique in which a periodic digital waveform's duty cycle is varied to control the average voltage, current or delivered power to a load; by changing the fraction of each period that the waveform is 'on', PWM achieves effective analog control using discrete high/low switching compatible with power electronics and digital controllers.