热表面警示灯，不需要外部电源

摘要：利用热电发电机（TEG）检测表面温度和升压开关稳压器，一个有用的水平提高甘醇输出，报警电路，闪烁的高亮度发光二极管的表面温度超过阈值时。

Maxim>AppNotes>CircuitProtectionKeywords:hot-surfacewarning,SeebeckEffect,stepupswitchingregulator,boostregulator,thermoelectricgenerator,TEG,high-Dec06,2010brightnessLEDs,HBLEDsAPPLICATIONNOTE4535Hot-SurfaceWarningLightRequiresNoExternalPowerAbstract:Usingathermoelectricgenerator(TEG)tosensethetemperatureofasurfaceandastep-upswitchingregulatortoboosttheTEGoutputtoausefullevel,thiswarningcircuitflashesahigh-brightnessLEDwhenthesurfacetemperatureexceedsathreshold.AsimilarversionofthisarticleappearedintheFebruary4,2008issueofMachineDesignmagazine.Becauseahot-surfacewarninglightaffectspersonnelsafety,itmustoperatereliablywheneverthesurfaceishot.Heat,however,complicatesth