Fitilar wuta wani nau'i ne na hasken wutar lantarki wanda ke sanya madugu zafi da haske bayan halin yanzu yana gudana ta cikinsa.Fitilar wutar lantarki tushen hasken lantarki ne wanda aka yi bisa ka'idar radiyo mai zafi.Mafi sauƙi nau'in fitilar incandescent shine wucewa da isasshen wutar lantarki ta cikin filament don sanya shi wuta, amma fitilar mai ba da wutar lantarki za ta sami ɗan gajeren rayuwa.
Babban bambanci tsakanin kwararan fitila na halogen da kwararan fitila mai haske shine cewa harsashin gilashin fitilar halogen yana cike da wasu iskar halogen elemental gas (yawanci aidin ko bromine), wanda ke aiki kamar haka: Yayin da filament ya yi zafi, atom ɗin tungsten suna vaporized kuma suna motsawa. zuwa bangon bututun gilashi.Yayin da suke kusa da bangon bututun gilashi, tururin tungsten yana sanyaya zuwa kusan 800 ℃ kuma yana haɗuwa tare da halogen atom don samar da tungsten halide (tungsten iodide ko tungsten bromide).Halide tungsten ya ci gaba da motsawa zuwa tsakiyar bututun gilashi, yana komawa zuwa filament mai oxidized.Domin tungsten halide abu ne da ba shi da kwanciyar hankali, sai ya zama mai zafi sannan a sake shi zuwa tururin halogen da tungsten, wanda sai a ajiye shi a kan filament don gyara fitar da ruwa.Ta hanyar wannan tsari na sake yin amfani da shi, rayuwar sabis na filament ba kawai ya kara girma ba (kusan sau 4 na fitilun fitilu), amma kuma saboda filament na iya aiki a yanayin zafi mafi girma, don haka samun haske mafi girma, yawan zafin jiki mai launi da haske mafi girma. inganci.
Inganci da aikin fitilun mota da fitilun suna da mahimmancin mahimmanci ga amincin motocin, ƙasarmu ta ƙirƙira ƙa'idodin ƙasa bisa ga ƙa'idodin ECE na Turai a 1984, kuma gano aikin rarraba hasken fitilu yana ɗaya daga cikin mafi mahimmanci a cikinsu.
