Abu ne da ya zama ruwan dare gama gari cewa fitilun LED suna yin duhu yayin da ake amfani da su. Akwai dalilai guda uku da zasu iya sa fitilun LED su dusashe:.
Tuki ya lalace
Ana buƙatar kwakwalwan kwamfuta na LED don yin aiki a ƙananan ƙarfin wutar lantarki na DC (kasa da 20V), amma ikon mu na yau da kullun shine babban ƙarfin AC (220V AC). Don kunna wutar lantarki zuwa wutar lantarki da ake buƙata don kwakwalwan LED, ana buƙatar na'urar da ake kira "LED constant current driving power wadata"
A ka'idar, muddin ma'aunin ma'aunin direba ya dace da allon LED, ana iya ci gaba da kunna shi kuma ana amfani da shi akai-akai. Tsarin ciki na direba yana da wuyar gaske, kuma kowace na'ura (kamar capacitor, rectifier, da dai sauransu) da rashin aiki na iya haifar da canji a cikin ƙarfin fitarwa, wanda hakan zai iya haifar da hasken wuta.
Lalacewar direba ita ce mafi yawan nau'in rashin aiki a cikin na'urorin hasken LED, wanda galibi ana iya magance su ta maye gurbin direban.
LED ya kone
Ita kanta LED tana kunshe da nau'in beads masu haske, kuma idan daya ko wani bangare daga cikinsu bai haskaka ba, to babu makawa zai sanya fitilun gaba daya su dushe. Yawancin beads ɗin fitilu ana haɗa su a jere sannan a layi daya - don haka idan dutsen dutse ɗaya ya ƙone, yana iya haifar da ɗigon beads su daina haske.
Akwai baƙaƙen baƙaƙen aibobi a saman ƙwaryar fitilar da ta ƙone. Nemo shi kuma haɗa waya zuwa bayanta zuwa gajeriyar kewaya shi; A madadin, maye gurbin kwan fitila tare da sabo zai iya magance matsalar.
Lokaci-lokaci, LED ɗaya yana ƙonewa, yana iya zama daidaituwa. Idan akai-akai yana ƙonewa, to ya kamata a yi la'akari da batutuwan tuƙi - wata alama ta gazawar drive ita ce kona kwakwalwan LED.
Lalacewar hasken LED
Abin da ake kira ruɓewar haske yana nufin raguwar haske na jiki mai haske, wanda ya fi bayyana a cikin fitilu masu haske da masu kyalli.
Fitilar LED kuma ba za su iya guje wa ruɓar haske ba, amma ƙimar ruɓawar haskensu ba ta da sauƙi, kuma yana da wahala a ga canje-canje da ido tsirara. Amma ba za a iya yanke hukuncin cewa ƙananan LEDs masu inganci, ko allunan katako masu ƙarancin inganci, ko dalilai na haƙiƙa kamar rashin ƙarancin zafi na iya haifar da lalata hasken LED don haɓakawa.