Kuyerekeza moyo wa nyali ya LED ndi LM-80 ndi TM-21
Moyo wa LED ndi Forward Current
Moyo wa LED yeniyeni yomwe imatulutsa kuwalako imatsimikiziridwa ndi kutentha kwa LED (kutentha kwa magetsi a LED) kotero kuti kutentha kutsika kumapangitsa moyo wautali wa LED. Chinthu chinanso chachikulu chomwe chimakhudza moyo wa LED chikugwirizana ndi kutsogolo kwamakono komwe kumayenderana ndi kuwala kwa LED. Nthawi zambiri, kutsogolo sivuto lalikulu chifukwa opanga ma LED amafotokozera magawo otetezeka ogwiritsira ntchito, ngakhale magulu apamwamba amafunikira mapangidwe abwinoko ozama. Ngati mafunde akutsogolo akutentha kwambiri amatha kukulitsa moyo wa chipangizo cha LED, ngakhale ngati chipangizo cha LED chikhala chozizira bwino ndi kapangidwe kabwino ka sink (pansi pa 85 ° C), nthawi yamoyo sidzasiyana kwambiri.
Chiyembekezo cha Moyo wa L70 LED
Mababu a nyali za LED nthawi zambiri samalephera mowopsa monga momwe amapangira ma incandescent. Opanga akamanena za moyo wa nyali ya LED kapena moyo wa nyali yonse ya nyale ya LED m'maola omwe akulozera ku data ya L70 yomwe imayimira kuyerekezera kolondola kwanthawi yomwe nyaliyo idatenga kutaya 30% ya kuwala kwake kapena kuchepetsedwa mpaka 70% ya kuwala kwake koyambirira, chifukwa chake L70. Izi zimatchulidwa m'maola 30,000 mpaka 40,000 ndipo nthawi zambiri amatchedwa kukonza kwa Lumen kapena kuchepa kwa mtengo wa Lumen.
Komabe, kuwala kwa LED sikungalephereke mwadzidzidzi koma kumapitirizabe kutulutsa kuwala kupitirira malo a moyo wa L70, ngakhale pakuwala kochepa mpaka kuwala kumakhala kocheperako kuti sikugwiritsidwe ntchito. Kuyerekeza kukuwonetsa kuti nyali ya LED imatha mpaka maola 100,000 kapena kupitilira apo isanazime. Muzinthu zambiri zomwe ndi "kuwala kwa moyo"! Chifukwa chake, moyo wa LED nthawi zambiri umakhala wotalika kokwanira ndipo sukhala vuto pokhapokha nthawi yayitali yogwira ntchito kapena kutentha kwambiri, zomwe zanenedwa zimatha chifukwa chakusapanga bwino.
Kuwerengera kwa L70 Life Expectancy pogwiritsa ntchito data yoyeserera ya LM-80 ndi TM-21 Extrapolation
Kuwerengera malo a moyo wa L70 LED ndi njira yosavuta koma yowononga nthawi pogwiritsa ntchito deta yoyesera ya LM-80 yomwe imafuna kuyesa kowala kapena lumens kwa zitsanzo zingapo za LED pa kutentha kosiyana, 55 ° C, 85 ° C ndi zina, ndi kudziwa kutayika kwa mphamvu ya kuwala pazigawo zingapo nthawi zambiri kuposa maola 6000 mpaka 8000. Kuyezetsa kungatenge pafupifupi chaka chimodzi kuti achite.
Monga tafotokozera, tikakhala ndi mayeso a LM-80 a chipangizo cha LED, titha kutulutsa pogwiritsa ntchito njira ya TM-21 yomwe kwenikweni ndi ntchito yowunikira komanso njira yodziwira moyo wa L70 m'maola a chipangizo cha LED ikatsika mpaka 70. % ya zotsatira zake.
