负载电源监视器提高高边电流测量

测放大器，MAX4211显示，可以很容易地测量负载消耗的功率。一个乘法器输入连接到负载电压，负载电流是内部模拟，成比例的电压由内部的电流检测放大器。乘法器的输出（VLIL）是成正比的电压，负载功率。Maxim>AppNotes>AmplifierandComparatorCircuitsKeywords:high-sidecurrent-senseamplifiers,analogvoltagemultipliers,load-powermonitors,A/Dconverters,voltagereferencesNov08,2010APPLICATIONNOTE4507Load-PowerMonitorImprovesHigh-SideCurrentMeasurementsBy:MaurizioGavardoniAbstract:Combiningahigh-sidecurrent-senseamplifierwithananalogvoltagemultiplier,MAX4211showncaneasilymeasurethepowerdissipatedinaload.Onemultiplierinputconnectstotheloadvoltage,andtheothertoaninternalanalogoftheloadcurrent―thatis,aproportionalvoltageproducedbytheinternalcurrent-senseamplifier.Themultiplieroutput(VLIL)isthenavoltageproportionaltoloadpower.AsimilarversionofthisarticleappearedintheAugust1,2008issue