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 hanyar filament don sanya ta cikin wuta, amma fitilar wuta 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 gas na halogen (yawanci iodine ko bromine), wanda ke aiki kamar haka: Yayin da filament ya yi zafi, ƙwayoyin tungsten suna tururi kuma suna motsawa. zuwa bangon bututun gilashi. Yayin da suke gabatowa bangon bututun gilashi, tururin tungsten yana sanyaya zuwa kusan 800 ℃ kuma yana haɗuwa 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 sosai, sai ya zama mai zafi ya sake dawowa ya zama tururi na halogen da tungsten, wanda sai a ajiye shi a kan filament don gyarawa. Ta hanyar wannan tsari na sake yin amfani da shi, rayuwar sabis na filament ba kawai ya kara girma ba (kusan sau 4 na fitilar incandescent), 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 ka'idodin Turai ECE a 1984, kuma gano aikin rarraba hasken fitilu yana ɗaya daga cikin mafi mahimmanci a cikinsu.
