简单的脉冲发生器具有低组件数

摘要：数的运算放大器和一些外部元件，您可以建立具有可变频率和占空比的脉冲发生器。Maxim/Dallas>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSAUTOMOTIVEKeywords:pulsegenerator,VCO,voltagecontrolledoscillator,opamp,operationalamplifier,frequency,Mar26,2003squarewave,opamp,opampsAPPLICATIONNOTE1960SimplePulseGeneratorHasLowPartsCountWithafewopampsandsomeexternalcomponents,youcanbuildapulsegeneratorwithvariablefrequencyanddutycycle.Thenaturalchoiceforgeneratingapulseofvariablefrequencyanddutycycleisagoodbench-toppulsegenerator.Ifyoudon'thaveageneratorormustbuildoneintoyoursystem,however,youcandoitwithafewopampsandsomeexternalcomponents(Figure1).Figure1.Thissimpleandversatilepulsegeneratorincludesonly15components.U1andQ1formavoltage-c