Transcription of AN-1849An Audio Amplifier Power Supply Design
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AN-1849An Audio Amplifier Power Supply Design
ApplicationReportSNAA057B June2008 powersupplyforusewithournewestofferingof high-performance, ,Primariesin ,Primariesin June2008 RevisedMay2013AN-1849 AnAudioAmplifierPowerSupplyDesignSubmitD ocumentationFeedbackCopyright 2008 2013, :Switchmode(SMPS),regulated, ,common,inexpensive, a drawbacktoSMPSis ,namelyClassG andClassH, regulatedsupplycanbea simplelinearregulatorICwiththerectifiedv oltagefromthetransformerasinputanda ,cost,space,thermaldesign, is , ,goodperformance,andreasonablecost,anunr egulatedsupplyis transformer,a bridgerectifier, drawbacktotheunregulatedsupplyis designshouldallowfora minimum10% fusein , theresponsibilityofthereadertoperformsta ndardindustrytestingtoassuresafetywhenus ingthesolutionin partorin wholein ,writtenorimplied, 72 Vunregulatedpowersupplydesignedspecifica llyfortheLME49810, and350 Wto400 Winto4.
Introduction www.ti.com 1 Introduction Analog audio circuit power supplies can have an audible effect in listening test and quantifiable effect in bench measurement results.
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