Question
What is pulse time modulation? Explain the ways to obtain different forms of PTM signals from an analog signal.
Answer :
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Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial[definition needed] loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers. the other being maximum power point tracking.
The average value of voltage (and current) fed to the load
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