Taw qhia rau LED tsav tsheb
LEDs yog cov yam ntxwv-sensitive semiconductor li nrog cov yam ntxwv kub tsis zoo.Yog li ntawd, nws yuav tsum tau ua kom ruaj khov thiab tiv thaiv thaum lub sijhawm ua ntawv thov, uas ua rau lub tswv yim ntawm kev tsav tsheb.Cov khoom siv LED muaj yuav luag hnyav rau kev tsav tsheb.Tsis zoo li cov teeb pom kev zoo tib yam, LEDs tuaj yeem txuas ncaj qha mus rau 220V AC fais fab mov.
Kev ua haujlwm ntawm LED tsav tsheb
Raws li cov cai tswj fais fab ntawm daim phiaj hluav taws xob thiab cov yam ntxwv uas yuav tsum tau ua ntawm LED tsav lub zog hluav taws xob, cov ntsiab lus hauv qab no yuav tsum tau txiav txim siab thaum xaiv thiab tsim cov khoom siv hluav taws xob LED:
Kev ntseeg siab: tshwj xeeb tshaj yog nyiam tus tsav tsheb ntawm LED txoj kev teeb.Kev tu vaj tse yog qhov nyuaj thiab kim heev hauv qhov chaw siab.
Kev ua haujlwm siab: Lub luminous efficiency ntawm LEDs txo qis nrog qhov kub thiab txias, yog li cov cua kub dissipation tseem ceeb heev, tshwj xeeb tshaj yog thaum lub hwj chim muab tso rau hauv lub teeb.LED yog cov khoom siv txuag hluav taws xob nrog kev tsav tsheb siab, kev siv hluav taws xob tsawg thiab kev tsim hluav taws xob tsawg hauv lub teeb, uas yuav pab txo qhov kub ntawm lub teeb thiab ncua lub teeb attenuation ntawm LED.
Cov khoom siv hluav taws xob siab: Cov khoom siv hluav taws xob yog qhov yuav tsum tau ntawm daim phiaj hluav taws xob ntawm qhov khoom thauj.Feem ntau, tsis muaj qhov yuav tsum tau ua rau cov khoom siv hluav taws xob qis dua 70 watts.Txawm hais tias lub zog hluav taws xob ntawm ib qho khoom siv hluav taws xob tsawg tsawg tsawg, nws muaj kev cuam tshuam me ntsis ntawm daim phiaj hluav taws xob.Txawm li cas los xij, yog tias lub teeb tau qhib thaum hmo ntuj, cov khoom zoo sib xws yuav muaj zog heev, uas yuav ua rau muaj qhov hnyav ntawm daim phiaj.Nws tau hais tias rau LED tsav tsheb ntawm 30 mus rau 40 watts, tej zaum yuav muaj qee qhov kev xav tau ntawm lub zog hluav taws xob nyob rau yav tom ntej.
LED tsav tsheb txoj cai
Kev sib raug zoo nkhaus ntawm pem hauv ntej voltage poob (VF) thiab rau pem hauv ntej tam sim no (IF).Nws tuaj yeem pom los ntawm qhov nkhaus uas thaum qhov hluav taws xob rau pem hauv ntej tshaj qhov pib (kwv yees li 2V) (feem ntau hu ua on-voltage), nws tuaj yeem kwv yees kwv yees tias IF thiab VF yog proportional.Saib cov lus hauv qab no rau cov yam ntxwv hluav taws xob ntawm tam sim no loj super ci LEDs.Nws tuaj yeem pom los ntawm lub rooj hais tias qhov siab tshaj IF ntawm tam sim no super ci LEDs tuaj yeem ncav cuag 1A, thaum VF feem ntau yog 2 txog 4V.
Txij li thaum cov yam ntxwv ntawm lub teeb ntawm LED feem ntau tau piav qhia txog kev ua haujlwm ntawm qhov tam sim no es tsis yog kev ua haujlwm ntawm qhov hluav taws xob, uas yog, kev sib raug zoo ntawm luminous flux (φV) thiab IF, kev siv cov tsav tsheb tam sim no tuaj yeem tswj tau qhov ci zoo dua. .Tsis tas li ntawd, qhov hluav taws xob rau pem hauv ntej poob ntawm LED muaj ntau yam loj (txog 1V lossis siab dua).Raws li tuaj yeem pom los ntawm VF-IF nkhaus hauv daim duab saum toj no, kev hloov me me hauv VF yuav ua rau muaj kev hloov loj hauv IF, uas ua rau muaj kev ci ntsa iab ntau dua thiab kev hloov loj.
Kev sib raug zoo nkhaus ntawm LED kub thiab luminous flux (φV).Daim duab hauv qab no qhia tau hais tias luminous flux yog inversely proportional rau kub.Lub luminous flux ntawm 85 ° C yog ib nrab ntawm luminous flux ntawm 25 ° C, thiab luminous tso zis ntawm 40 ° C yog 1.8 npaug ntawm lub luminous flux ntawm 25 ° C.Kev hloov pauv kub kuj muaj qee yam cuam tshuam rau lub wavelength ntawm LED.Yog li ntawd, zoo cua kub dissipation yog ib tug guarantee los xyuas kom meej tias cov LED tuav ib tug tas li brightness.
Yog li ntawd, siv qhov hluav taws xob tas li los tsav tsis tuaj yeem lav qhov sib xws ntawm LED qhov ci, thiab cuam tshuam rau kev ntseeg siab, lub neej thiab lub teeb attenuation ntawm LED.Yog li ntawd, super ci LEDs feem ntau yog tsav los ntawm qhov chaw tam sim no.
Post lub sij hawm: Sep-03-2021