Specifications:lPower:35W/55WCANBUSPROHIDballastlLin:3.2Amin.(10Amax.)lVin:9-16V(13.2Vnom.)lCurrent:3.4A@35WlInstantaneousVoltage:23000VlOperatingtemperature:-40°Cto105°ClLuminousflux:2500~3500LMlLifetime:3500hourslStarttime:0.1sFeatures:lCansolveallCANBUSproblemslCover:crystalglasstubeofUV-CATanti-ultravioletlDefectrate:lessthan1%lSlimballastsavingshippingcostl18monthswarrantylOEMordersarewelcomelSimple&quick,pluginandplaylLightweight,lowtemperatureriselDecoderbuilt-insolves80%warningerrorproblem.l Reversepolarityprotectionl water-proof,dust-proof,shock-proof,rot-proof,dust-proofWhatisCanbus?Inthetop-endcarsoftodayyouwillfindabout1.25mileofwirewithatotalweightofabout220lb.Sometimeswiringharnessesindifferentcarmodelsexceedtheamountof600.Fromaneconomicalpointofviewitmakessensetoexplorealterativetechnologiestothetraditionalwiring.Theautomotiveindustry,especiallytheGerman,FrenchandAmericanstartedtolookfornewmoderncommunicationmethods.Thisresultedinthecanbustechnology.TheCANtechnologyforlowandhighspeeddatatransfersystemhasbeenappliedfrom1992byMercedes(Sclass).BMWandPorschefollowedrapidlyandtodayalsoVW,RenaultandFiatandothersapplytheCANtechnologyintheirmidclasscars.ThroughthisCAN-bussystemvarioussignalsaresentthroughthecar'selectricalwiring.Alsothecarcanmeasureandhealthcheckvariousaccessoriesconnectedtoit.Mostmoderncarspermanentlymeasurethehealthconditionofthelightingsystem,alsowhenlightsareswitchedoff.Abrokenbulbisimmediatelydetected,awarningissendtothedriverandsometimesthepowerisautomaticallyswitchedoff,forsafetyreasons.Thisiswheretheproblemoccurswhenthecar'slightingsystemisconvertedtoxenon.Axenonlamphasacompletelydifferentelectricalbehaviourcomparedtoahalogenlamp.Thisismainlycausedbythepowerconverterthataxenonbulbneeds,theballast.Whenswitchedon,ahalogenbulbdrawshighcurrentbecausethefilamentiscoldandhencehasalowresistance.Shortlyafterignitionthecurrentdecreasesandeventuallystabilizesatabout4,5Ampere.Thisprocesstakesabout100ms.Aballasthoweverbehavescompletelydifferent.Mostballastsdonotimmediatelydrawcurrentafterswitchedon.Afterashortwhilethecurrentconsumptionlooksquiteunpredictableandeventuallythesystemstabilizesaround3Ampere.Butinmanycasesthecar'son-boardcomputerhasalreadydecidedthatsomethingiswronganddisconnectsthepower.Thetrickistomakeaballastthatbehaveslikeahalogenbulb.Anotherproblemisthenoiseproducedbytheballast.Theballastcontainsaswitchedmodepowersupplythatproducesnoise.ThisnoisecanconfusetheCAN-bussystemwithunpredictableresultslikewindowsthatopenautomatically(ordon'tcloseanymore),wipersthatstartmoving,thecar'sradiothatproducesnoiseetc.etc.Thisnoisecanbeeliminatedbyawarningcancellerthatcanbeusedincombinationwiththeballast.Thesespecialcapacitorssuspendtheelectricalnoisethatpossiblyisgeneratedbyballasts.Alsoitcancelsfalseboardcomputerwarnings.Ismainlyusedinconjunctionwithbudgetballastbutcanalsobeusedwithotherballasttypes.WhatistheFunctionofcanbus?