简单的脉冲发生器具有低部分计数

摘要：几个运算放大器和一些外部组件，您可以构建脉冲发生器与变频和工作周期。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