Puas yog LED Teeb Kub?
Niaj hnub no, LED qhov muag teev thiab teeb pom kev zoo siv ntau dua li qhov qub. Lawv tau txais txiaj ntsig zoo rau kev ua kom muaj zog ntau dua thiab muaj txiaj ntsig zoo dua li cov teeb pom kev zoo los yog halogen teeb thaum tseem nyob ntev ntev. Yog li ntawd, yog tias koj tsis tau hloov mus rau LEDs, lub sijhawm tam sim no.
Txawm li cas los xij, tseem muaj ntau qhov tsis tseeb thiab tsis to taub txog LED teeb thiab lawv qhov zoo. Rau cov neeg uas tau siv lub teeb incandescent rau lub sijhawm ntev, cov kev poob qis no tuaj yeem ua rau lub hlwb tsis zoo rau kev hloov pauv mus rau qhov kawg. LED teeb puas kub? yog ib qho ntawm feem ntau cov lus nug txog LED teeb pom kev zoo.
Puas yog LED Teeb Kub?
Hauv kev txiav txim siab, LED teeb ua kom muaj cua sov, tab sis lawv tsis sov heev rau qhov kov. Nws tsis yooj yim to taub yuav ua li cas LED teeb ua kom sov, tab sis peb yuav mus rau qhov tob ntxiv hauv qab no.
Yuav Ua Li Cas Kub LED Teeb Tau Txais?
Peb yuav tsum to taub yuav ua li cas LED qhov muag teev tiag tiag tsim lub teeb thiab, nyob rau hauv lem, tshav kub yog hais tias peb yuav tsum to taub tag nrho cov ntsiab lus ntawm qhov kev kawm no.
Raws li peb txhua tus paub, LED stands rau "lub teeb emitting diode," thiab vim hais tias ib tug semiconductor hu ua diode tsuas yog tso cai rau hluav taws xob tam sim no mus rau hauv ib qho kev taw qhia, nws kuj generates ib co cua sov.
Nws yog theoretically ua tau rau lub diode los tsim teeb los ntawm tag nrho cov hluav taws xob uas ntws los ntawm nws, tab sis qhov no tsis yog lub cev ua tau zoo. Hloov chaw, ib feem ntawm lub zog yuav raug hloov mus rau hauv cov cua sov vim qhov ua tsis tau zoo uas tshwm sim los ntawm lub cev tsis zoo hauv lub teeb ci LED cov khoom.
Txawm li cas los xij, vim tias LEDs muaj txiaj ntsig zoo dua li cov teeb pom kev zoo, lawv ua haujlwm txias dua. Piv txwv li, lub teeb ci LED uas tau ua haujlwm rau ntau teev yuav raug tshem tawm yooj yim heev, thaum lub teeb hluav taws xob tuaj yeem hlawv koj yog tias koj kov nws.Qhov no tshwm sim li cas? Feem ntau muaj ob qho laj thawj:
Nyob rau hauv kev sib piv rau incandescent thiab halogen teeb, LEDs yog ntau npaum li cas zog-npaum li lawv hloov lub feem ntau ntawm lub zog mus rau lub teeb, generating tsawg tshav kub nyob rau hauv cov txheej txheem.
Txhua qhov hluav taws kub uas tseem tshuav yog dissipated los ntawm LED qhov muag teev rau hauv qhov chaw, deb ntawm lub teeb. Qhov no ua rau lub neej ntev heev ntawm LED qhov muag teev los ntawm kev cia lub teeb LED nws tus kheej kom nyob twj ywm txias txhua lub sijhawm.
Yuav ua li cas lub teeb thiab cua sov yog tsim los ntawm Incandescent qij
Incandescent teeb qhov muag tsis zoo rau qhov kub heev thaum lawv tawm lub teeb.
Vim li cas? Tam sim no peb paub tias LEDs tsim lub teeb thiab kub sib txawv ntawm cov qhov muag teeb. Raws li txoj cai, thawj qhov tso zis ntawm qhov muag teev yog cua sov, thaum cov zis thib ob yog lub teeb.
Ib tug tungsten filament yog rhuab los ntawm ib qho hluav taws xob tam sim no rau qhov kub siab uas nws ci thiab tsim lub teeb. Yog li, txog li 90 feem pua ntawm cov hluav taws xob tsim hluav taws xob yog siv los ua kom sov, thaum tsuas yog 10 feem pua yog siv los tsim lub teeb. Kev ua haujlwm ntawm LED qhov muag teev txawv ntawm qhov no. Kev ua haujlwm ntawm halogen teeb, uas siv ob qho tib si noble thiab halogen roj, yog qhov sib piv heev.
Txij li cov txheej txheem no, lub teeb ci thiab halogen tuaj yeem hlawv tawm yog tias lawv raug tso tseg rau lub sijhawm ntev vim tias lawv ua haujlwm (ntau) kub dua li LEDs.
Kawm txog LED "Tsub"
Koj tuaj yeem muab lub sijhawm los xaiv ntawm ob peb "kub" thaum yuav lub teeb LED. Qhov ntsuas kub no txhais li cas tiag tiag, vim tias lub teeb LED feem ntau yuav ua haujlwm txias, raws li peb tau tsim?
Tsis yog "kub kub," "kub" hauv cov ntsiab lus no hais txog "xim kub" hauv LED teeb. Thaum muab piv cov xim ntawm lub teeb pom kev zoo rau cov xim tsim los ntawm kev hlawv ib qho zoo tagnrho dub-lub cev radiator ntawm tib qhov kub, xim kub yog siv. tsab ntawv K, uas sawv cev rau cov xim kub uas feem ntau muab hauv Kelvins.
Tshaj 5000 K xim kub muaj xim xiav-dawb ntau dua, uas yog vim li cas lawv feem ntau hu ua "txias" xim. Ntawm qhov tod tes, "sov xim" txhais tau tias yog hues ntawm 2700 thiab 3000 K.
"Neutral dawb" txhais tau tias muaj xim kub ntawm 4000 K, uas yog piv rau cov xim ntawm lub teeb fluorescent dawb.
Thaum 3000 K yog piv rau cov xim tsim los ntawm halogens, 2700 K zoo ib yam li cov xim daj, sov dawb xim uas ua los ntawm cov tungsten filament ntawm lub teeb incandescent.
Yog xav paub ntxiv, saib peb nplooj ntawv ntawm Kelvin Xim Kub. Qhov no yog qhov tseem ceeb uas yuav tsum paub ua ntej yuav khoom lub teeb.
Xaus
Txawm hais tias LED qhov muag teev ua tawm qee qhov cua sov, nws yog qhov me me vim tias lawv hloov lub zog mus rau hauv lub teeb thiab lawv cov txheej txheem thermal dissipation zoo dua. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov, txawm li cas los xij, txawm hais tias lub dab dej kub yuav sov, qhov tseeb LED qhov muag yuav tsis.
Yog li ntawd, nws yog ib qho tseem ceeb kom tsis txhob muab lub teeb ci LED rau hauv ib lub tsev nyob ib puag ncig vim tias cov cua sov nws tsim tsis tuaj yeem cuam tshuam txaus thiab txo qis nws cov txiaj ntsig tag nrho.
