电路产生模拟的风扇转速控制

摘要：线性电路测量温度，并控制产生可变电源电压为风扇冷却风扇的速度。Maxim>AppNotes>AUTOMOTIVETEMPERATURESENSORSandTHERMALMANAGEMENTKeywords:analog,fanspeedcontrol,temperaturesensor,fancontroller,thermalmanagementJun26,2002APPLICATIONNOTE1125CircuitGeneratesAnalogFan-SpeedControlAbstract:Alinearcircuitmeasurestemperatureandcontrolsthespeedofacoolingfanbygeneratingavariablesupplyvoltageforthefan.Fannoiseisbecomingalargerissueasmoreelectronicequipmententerstheofficeandthehome.Avariablespeedfanpermitsslower,andquieter,fanspeedwhentemperatureconditionsallow.Fan-controlcircuitsrangefromsimpleswitchesthatboostthefanspeedatacertaintemperature,todigitallycontrolledfanswithcontinuously-variablespeed.High-speed/low-speedswitchesareinexpen