Electrolytic Capacitors shine Babban Dalili na Gajeren Rayuwa na Fitilolin LED
Sau da yawa ana jin cewa ƙarancin rayuwar fitilun LED ya samo asali ne saboda ƙarancin wutar lantarki, kuma ƙarancin ƙarfin wutar lantarki yana faruwa ne saboda ƙarancin ƙarfin wutar lantarki. Waɗannan ikirari kuma suna da ma'ana. Domin kasuwar ta cika da ɗimbin na’urorin lantarki masu ɗan gajeren lokaci da na ƙasa, tare da cewa a halin yanzu suna yaƙi da farashin, wasu masana'antun suna amfani da waɗannan ƙarancin wutar lantarki na ɗan gajeren lokaci ba tare da la'akari da inganci ba.
Na farko, rayuwar capacitor electrolytic ya dogara da yanayin zafi.
Yaya ake ayyana rayuwar ma'aunin wutar lantarki? Tabbas, an bayyana shi a cikin sa'o'i. Duk da haka, idan ma'aunin rayuwa na capacitor electrolytic ya kasance awa 1,000, ba yana nufin cewa wutar lantarki ta karye bayan sa'o'i dubu daya ba, a'a, sai dai kawai karfin wutar lantarki ya ragu da rabi bayan sa'o'i 1,000, wanda ya kasance. asali 20uF. Yanzu kawai 10uF.
Bugu da kari, index rayuwa na electrolytic capacitors kuma yana da halayyar cewa dole ne a bayyana a cikin nawa digiri na aiki yanayin zafi rayuwa. Kuma yawanci ana kayyade shi azaman rayuwa a zazzabi na yanayi na 105 ° C.
Wannan shi ne saboda masu ƙarfin lantarki da muke amfani da su a yau sune masu amfani da wutar lantarki ta hanyar amfani da ruwa electrolyte. Hakika, idan electrolyte ya bushe, da capacitance zai bace. Mafi girman zafin jiki, mafi sauƙi electrolyte yana ƙafewa. Saboda haka, index rayuwa na electrolytic capacitor dole ne ya nuna rayuwa a karkashin abin da yanayi zazzabi.
Don haka a halin yanzu duk masu ƙarfin lantarki suna da alama a 105 ° C. Misali, mafi yawan wutar lantarki na yau da kullun yana da tsawon sa'o'i 1,000 kawai a 105 ° C. Amma idan kuna tunanin cewa rayuwar duk masu ƙarfin wutar lantarki ta sa'o'i 1,000 ne kawai. Wannan ba daidai ba ne.
A taƙaice, idan yanayin yanayin yanayi ya fi 105 ° C, rayuwarsa ba za ta wuce sa'o'i 1,000 ba, kuma idan yanayin yanayin ya yi ƙasa da 105 ° C, rayuwarsa za ta wuce sa'o'i 1,000. Don haka akwai mummunan dangantaka tsakanin rayuwa da zafin jiki? Ee!
Ɗaya daga cikin mafi sauƙi kuma mai sauƙi don ƙididdige dangantaka shine cewa kowane digiri na 10 ya karu a cikin yanayin zafi, tsawon rayuwar yana raguwa da rabi; Sabanin haka, ga kowane raguwar digiri 10 a yanayin zafin jiki, tsawon rayuwar yana ninka sau biyu. Tabbas wannan kiyasi ne mai sauƙi, amma kuma daidai ne.
Saboda masu amfani da wutar lantarki da ake amfani da su don ikon tuƙi na LED tabbas ana sanya su a cikin gidan fitilar LED, kawai muna buƙatar sanin zafin jiki a cikin fitilun LED don sanin rayuwar aiki na capacitor na lantarki.
Domin a cikin fitilun da yawa ana sanya LED da capacitors na electrolytic a cikin casing iri ɗaya, yanayin yanayin muhalli guda biyu ne kawai. Kuma wannan yanayin zafin jiki an ƙaddara shi ne ta hanyar dumama da ma'aunin sanyaya na LED da wutar lantarki. Kuma yanayin dumama da sanyaya kowane fitilar LED sun bambanta.
Hanyar tsawaita rayuwar capacitor electrolytic
① Tsawaita rayuwarsa ta tsari
A haƙiƙa, hanyar tsawaita rayuwar masu ƙarfin wutar lantarki abu ne mai sauƙi, domin ƙarshen rayuwarsa ya fi yawa saboda ƙazantar ruwan lantarki. Idan an inganta hatiminsa kuma ba a bar shi ya ƙafe ba, to a zahiri za a tsawaita rayuwarsa.
Bugu da ƙari, ta hanyar ɗaukar murfin filastik phenolic tare da na'urar lantarki a kusa da shi gaba ɗaya, da gasket na musamman guda biyu tare da harsashi na aluminum, asarar electrolyte kuma za'a iya ragewa sosai.
② Tsawaita rayuwarsa daga amfani
Rage ripple halin yanzu na iya tsawaita rayuwar sabis. Idan ripple halin yanzu ya yi girma, ana iya rage shi ta amfani da capacitors guda biyu a layi daya.
Kare electrolytic capacitors
Wani lokaci ma idan aka yi amfani da capacitor na tsawon rai, ana samun sau da yawa cewa wutar lantarki ta karye. Menene dalilin hakan? A gaskiya, ba daidai ba ne a yi tunanin cewa ingancin wutar lantarki bai isa ba.
Domin mun san cewa a kan grid na AC na wutar lantarki na birnin, sau da yawa ana samun hauhawar wutar lantarki nan take a sakamakon fadowar walƙiya. Ko da yake an aiwatar da matakan kariya da yawa don walƙiya a kan manyan hanyoyin wutar lantarki, har yanzu ba makawa za a sami ɗigogi na gidan yanar gizo ga mazauna gida.
Don fitilun LED, idan na'urorin lantarki ne ke amfani da su, dole ne ka ƙara matakan hana haɓakawa zuwa tashoshin shigar da wutar lantarki a cikin wutar lantarkin, gami da fiusi da masu kariyar overvoltage, wanda aka fi sani da varistors. Kare abubuwan da ke biyowa, in ba haka ba za a huda masu ƙarfin wutar lantarki na tsawon rai ta hanyar ƙarfin lantarki.