Explain the principle of switch mode power supply with the help of sch

Question

Explain the principle of switch mode power supply with the help of schematic diagram. State its advantages over linear power supply.

06 Feb 2025

Answer :

Word Count : 312

A Switch Mode Power Supply (SMPS) operates based on the principle of switching a power transistor on and off rapidly to regulate the power delivered to a load. This high-speed switching allows the conversion of electrical power with greater efficiency compared to traditional linear power supplies. The basic function of an SMPS is to convert a higher or lower input voltage to a stable output voltage by adjusting the pulse width modulation (PWM) of the transistor.

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