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What is regulator ? State its need.

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A voltage regulator is a circuit or device designed to deliver a constant voltage at its output regardless of changes in ac supply voltage and load current. Need:- A voltage regulator is one of the most widely used electronic circuitry in any device. A regulated voltage very important for the smooth functioning of many electronic circuits. Without voltage regulator in power supply, it may give unexpected result or damage one of the components in the circuit, hence voltage regulator is needed.

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