尽管开关电源逐渐普及，但线性电源电路仍然广受欢迎。线性电源电路具有良好的噪声性能和漂移特性，而且没有辐射，响应速度快。而其最大的劣势是效率低。文中介绍了一些如何改进的措施。ApplicationNote32March1989HighEfciencyLinearRegulatorsJimWilliamsIntroductionLinearvoltageregulatorscontinuetoenjoywidespreaduseswitchingsupplyoutput.Figure1showssuchanarrange-despitetheincreasingpopularityofswitchingapproaches.ment.Themainoutput(“A”)isstabilizedbyfeedbacktoLinearregulatorsareeasilyimplemented,andhavemuchtheswitchingregulator.Usually,thisoutputsuppliesmostbetternoiseanddriftcharacteristicsthanswitchers.Ad-ofthepowertakenfromthecircuit.Becauseofthis,theditionally,theydonotr
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