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1、电磁炉维修技术(Maintenancetechnologyofinductioncooker)Maintenancetechnologyofhouseholdinductioncooker
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3、Update:2013-07-13,10:15.WorkingprincipleofelectromagneticovenTheelectromagneticovenismainlyusingtheprincipleofelectromagneticinductiontoconvertelectricalenergyintoheatenergyofkitchena
4、ppliances,whentheelectromagneticoveninthenormaltask,bytherectifiercircuittocommunicate50HzvoltageintoDCvoltage,andthenafterthecontrolcircuitconvertstheDCvoltageintohighfrequencyvoltage20-40KHz,inductioncoilswilloccurinalternatingmagneticfieldthebottomofthepotwithrepeatedchange,thepotbotto
5、mringcurrent(WoLiu),shortcircuitthermaleffectandtheuseofsmallresistanceandlargecurrentoccurrenceofheatdirectlytothebottomandthenquickheating,heatingappliancesinsomething.Theheatingmethodofvibrationheatgenerationcanreducetheintermediatepartofheattransfer,andgreatlyincreasetheheatingpowerTo
6、ols/rawmaterialsElectromagneticoven,screwdriverMethods/stepsOneThebootaftertheactiveresetbuzzerringingDefectanalysis:Presentsthiskindoftrouble,mainlyisthepottemperatureexaminationcircuitorthemaincontrolICquestion,belowintroducesitsrepairmethod.Viewthepace:Thepotoutofthethermistorinsertpla
7、te,usingamultimetertomeasuretheresistance,resistanceofthethermistoratroomtemperatureis100K.BecausetheEuropeanthermistorisselectedasnegativetemperaturecoefficient,theresistancewillfollowtheincreaseoftemperaturedrop.Ifthemeasuredvalueinthemeasurementfor0euroorresistanceinfinity,indicatingth
8、ethermistorcircuitbreakermayhave,thethermistorisremovedandthenewchangeofthesametypethermistor.Theelectricmachinetestallnormal,troubleshooting.Ifinthelaststep,theproblemhasnotbeeneliminated,itisnecessarytopoweronthecircuitanalysis.UsingamultimetertomeasurethemainIC16voltage,17feet(16feet4.
9、95V,17feetof0.42V),ifthevoltagemeasurementtothenormal,butwithnocleaning,wecanputthewronglockinthemaincontrolIC,themasterICremovedfromtheboard,forthesametypeIC,masterofthesamestandard,powerontestmachine,everythingisnormal,troubleshooting.Ifthevoltageinthepreviousstep