标签: 电源接口

ThisapplicationnotedescribesasimplemethodformeasuringparametersfromtheACpowerline.Parameterssuchaszerocrossing,frequency,andrelativephasecanbemeasured.Thismethodisusefulformeasurementson50,60,and400Hzpowersystemswithvoltagesuptoseveralhundredvolts.Themethodrequiresonlyoneexternalcomponent,aresistor,andismorereliablethanpreviouslypublishedmethodsusingcapacitorsorbulky,expensivetransformers.AN521InterfacingtoACPowerLinesFIGURE1:PIC16C5XSERIESINPUTAuthor:DougCoxPROTECTIONCIRCUITONI/OMicrochipTechnologyInc.PINSVDDINTRODUCTIONThisapplicationnotedescribesasimplemethodforPmeasuringparametersfromtheACpowerline.Parameterssuchaszerocrossing,frequency,and……

ATX电源接口……