低电池指示器是成本低，高效，环保

摘要：本应用笔记介绍了电路采用低功耗CMOS比较器提供低电池状态的LED视觉指示。这个杠杆收购（低电量指示灯）实现LED在低频率和低占空比脉冲。该电路实现不消耗电池电流过大，可导致永久性损害电池，最终，危险废物处置。该电路还有助于节省电池电流在开关周期由放置在关机的比较。方程和电路分析包括确定占空比和比较触发点。

Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>AmplifierandComparatorCircuits>APP1872Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>Automotive>APP1872Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>BatteryManagement>APP1872Keywords:comparator,lowbattery,LED,lowcost,lowpowerconsumption,comparatorsFeb03,2003APPLICATIONNOTE1872Low-BatteryIndicatorIsLowCost,HighlyEfficient,andEnvironmentallyFriendlyFeb03,2003Abstract:Thisapplicationnotepresentsacircuitthatusesalow-powerCMOScomparatortoprovideanLEDvisualindicationofalow-batterycondition.ThisLBO(low