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Difference between revisions of "pulse-width modulation"
(Created page with "'''Pulse-width modulation''' ('''PWM'''), also known as '''pulse-duration modulation''' ('''PDM''') is a technique of modulating the duration of the HIGH and LOW pulses of a d...") |
(No difference)
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Revision as of 10:40, 11 December 2013
Pulse-width modulation (PWM), also known as pulse-duration modulation (PDM) is a technique of modulating the duration of the HIGH and LOW pulses of a digital signal. A PWM signal is a way of representing an analog signal in a digital circuit. The application of pulse-width modulation varies greatly from communication and encoding to controlling the power delivered to an external device such as a motor or an LED. The purpose of pulse-width modulation is to vary the duty cycle according to where the duty_cycle can be controlled by varying \(t_{on}\) or \(t_{off}\).