资源描述：
《水泥电阻参数电阻电容的标注方法（method for marking resistance parameter, resistance and capacitance of cement）》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、水泥电阻参数电阻电容的标注方法（Methodformarkingresistanceparameter,resistanceandcapacitanceofcement）Cementresistanceparameter/resistancecapacitancetaggingmethodtime:2010-06-2016:34source:unknownauthor:1Click:3timesNovember23,2009TheresistanceisrepresentedbythesymbolR.Itsmostbasicfunctionistoimpedethe
2、flowofcurrent.Thetwomostbasicparametersformeasuringresistorsareresistanceandpower.Resistanceisusedtoindicatethemagnitudeoftheresistancetothecurrentbytheresistor,expressedinohms.Inadditiontothebasicunits,therearethousandsofeurosNovember23,2009TheresistanceisrepresentedbythesymbolR.Itsmo
3、stbasicfunctionistoimpedetheflowofcurrent.Thetwomostbasicparametersformeasuringresistorsareresistanceandpower.Resistanceisusedtoindicatethemagnitudeoftheresistancetothecurrentbytheresistor,expressedinohms.Inadditiontothebasicunits,therearethousandsofOuandou.Powerisusedtoindicatethemaxi
4、mumcurrentthataresistorcansustain.WithWatt,thereareavarietyof1/16W,1/8W,1/4W,1/2W,1W,2W,etc.,andtheresistorwillburnoutabovethismaximum.Accordingtotheconstructionmaterialsthesameresistor,acementresistance(lowconstructioncost,largepower,thermalnoise,theresistanceisnotaccurateenough,worki
5、snotstable),carbonfilmresistors,metalfilmresistors(smallvolume,stableoperation,lownoise,highprecision)andmetaloxidefilmresistor.Accordingtoitsresistanceisvariable,canbedividedintofinetuningresistor,adjustableresistor,potentiometerandsoon.Thekeyofresistanceinmarkingitsvalueisbythecolorr
6、ingmarkmethod.Itisidentifiedasfollows:inordertodistinguishbetweendifferentcategoriesofresistance,severalcommonlyusedLatinlettersofresistancetype,asshowninfigure1.ThefirstletterRstandsforresistance,andthesecondletterrepresentshealthlevelmaterial,andthethirdletterrepresentstheshapeperfor
7、mance.I.knowledgeandapplicationofNTC(negativetemperaturecoefficient)thermistor:NTCisthenegativetemperaturecoefficientinEnglishsubtraction,saidtheNTCthermistorisnegativetemperaturecoefficientthermistor.Itismanganese,cobalt,nickelandcopperandothermetaloxidesasthemainmaterial,toacceptpo
