资源描述：
《荧光灯电子镇流器电路分析与维修》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、荧光灯电子镇流器电路分析与维修PdfdocumentsmayexperiencepoorbrowsingontheWAPside.ItisrecommendedthatyoufirstselectTXT,ordownloadthesourcefiletothelocalview.Fluorescentlamp,electronicballast,LianLian,YangXiaofeng,YuQing,circuitanalysisandmaintenanceOne,Thecompositionan
2、dworkingprincipleofthecircuitL,65,andothermajorcomponents.WhentheTisonandoffthe1J2T,the20V2voltagechargestotheCand82c.Thechargingcircuitisasfollows:2-C(20V2C)(left)a"rightPC2filament1c8R26rLIfilamentT(2epole)R042cT(1pole),chargingcurrentflowingthrought
3、hehighTheprimarycoilofthefrequencytransformer[I44]increasesasthecurrentincreasesslightly,andwhenthecurrentintheI4increasestoacertainextent,thecoreofthetransformerissaturated.Typicalcircuitofelectronicballastisshowninfigure1.Itconsistsoffiveparts,suchas
4、rectifier,filtercircuit,startingcircuit,highfrequencyself-excitedoscillationcircuit,lamptuberesonancecircuitandover-voltageprotectioncircuit.1.rectifiercircuit:mainlyby:1D,4CandothercomponentsofthegroupD~7C,5into.The4C,5,and7consistofCand5DDpassivefilt
5、eringcircuitsineachsingle2thecurrentflowingthroughtheL4beginstodecrease.Atthistime,inthecycle,theACinputvoltageishigherthanthetimeoftheDCoutputvoltage,andthechargeisnolongerincreasedontheC.Thepolarityofthevoltageofthe3Lisreversed,andthelengthoftheJ5int
6、heIischanged.Theturn-onangleoftherectifierdiodecanbeincreasedbymorethan10.ElectricalsecondarycoilsL,52.Thedeadtimeofthesourcecurrentpassingthroughzeroisshortened,andthepowerfactorofthecircuitisraised,andtheelectromotiveforcedirectionoftheinducedelectro
7、motiveforceisupanddown,andtheelectromotiveforcegeneratedinthe3Lishigherthan09V..2bootcircuit:mainlyby:6C,3Dc,7R,9andothercomponents.220VDCvoltagethroughC,3c7Rchargeto6,Cwhen6endsofelectricityPressingtheturningchargetoD9ThisisaforcetoT,2bythechangeasthe
8、cutoff,1bycuttingTStoptoturnon.Next,thechargeonthecapacitorCand8shouldbe2CDischarge.Thedischargecircuitis:2,left)1c1ec(())---oneAfterpressing,thetriggerdiodeisD9The6CisdischargedbythebidirectionaltriggeringdiodeD9tothe1baseofthetriode,a
