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Switching Regulator

Switching Regulator

A switching regulator functions by utilizing switching technology rather than linear. Very simplified, the power supply switches the incoming power on and off, and varies the width of the resultant pulses to provide the desired voltage after they have been integrated and filtered. This approach is more efficient than that of a linear power supply, which dissipates the power resulting from the voltage drop in its regulator. A switching regulator is therefore cooler running than a linear power supply with the same output rating, and is smaller because it doesn’t require the bulky (and heavy) power transformer of the equivalent linear supply. However, the switching does result in the output containing more electrical noise than the linear supply, so when planning to use a switching regulator it is very important to first verify that the noise will not adversely affect the intended application.

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