Thaum kaj ntug ntawm lub sijhawm ntawm LEDs, txawm tias qhov ci ntsa iab me ntsis ntawm cov khoom zoo li kev tawg, vim tias txawm tias ob peb daim sib xyaw ua ke xyaum tsis tau siv lub zog. Lub sijhawm dhau mus, thiab nrog nws cov khoom zoo sib xws tau tsim. Niaj hnub no, koj yuav tsis surprise leej twg nrog super-ci LEDs, uas tau siv nyob txhua qhov chaw. Tab sis txawm tias lawv qhov kev nthuav dav, tib neeg paub me ntsis txog cov ntsiab lus LED. Hnub no tsab xov xwm yuav kho qhov omission.
High brightness LEDs: cov ntaub ntawv dav dav
Cov ntsiab lus no tuaj yeem muab faib ua 2 pawg. Qee tus muaj lub zog muaj zog, lwm tus yog tsim los ntawm txoj hauv kev uas, nrog kev siv hluav taws xob tsawg, lawv muaj peev xwm tsim tau lub luminous flux uas yog ob peb zaug ntau dua li cov pa sib piv.
Ib tus neeg sawv cev ntawm cov teeb ci ultra-ci yog Cree cov khoom. Tus nqi ntawm cov chips zoo li no yog qhov siab heev, uas ua rau muaj ntau yam fakes. Tshwj xeeb tshaj yog txawv nyob rau hauv daim teb no yog Suavmanufacturers. Feem ntau, lawv cov khoom thaum xub thawj ci txawm ci dua li qhov qub, tab sis cov fake sai degrades. Tom qab 10-15 teev ntawm kev ua haujlwm tas mus li, lub diode dims kom ua tiav qhov tsis ua tiav.
Yog tias peb tham txog SMD cov khoom, tom qab ntawd ntawm lawv koj tuaj yeem pom cov LED ci ntsa iab, tab sis lawv lub zog siv yuav ntau dua, nrog rau lawv qhov ntev. Tab sis cov ntsiab lus ntawm qhov me me tuaj yeem pom nyob rau hauv Epistar hom. Zoo nkauj zoo thiab kev pab lub neej ntev yog vim li cas rau qhov nrov ntawm cov LEDs.
Hom ntawm cov ntsiab lus zoo sib xws thiab lawv cov yam ntxwv
Hauv kev tsim cov LEDs, qee yam khoom siv hluav taws xob tau siv. Yog tias peb faib lawv los ntawm hom, peb tuaj yeem paub qhov txawv 2 lub ntsiab:
- AlInGaP - cov xim daj, ntsuab, txiv kab ntxwv thiab liab yog tsim los ntawm nws.
- InGaN - dawb, xiav, ntsuab thiab xiav-ntsuab LED ntsiab.
Cov yam ntxwv ntawm ultra-ci LEDs tso cai rau lawv siv hauv ntau qhov chaw sib txawv. Lawv yog siv los teeb pom kev cob qhia, txoj kev, chav tsev. Xws li cov ntsiab lus tseem raug ntsia rau ntawm lub tsheb raws li nruab hnub nrig khiav teeb, qhov ntev lossis lub teeb taws qis. Txawm li cas los xij, qhov kev xaiv tom kawg yog nce zuj zus.
Qhov tseeb yog tias ultra-ci LEDs tau kub heev thaum ua haujlwm. Tom qab lawv tau nruab rau hauv lub teeb taub hau, lawv yuav tsum ua haujlwm yuav luag tas li, uas ua rau muaj qhov kub thiab txias thiab degradation sai. Tab sis raws liqhov ntev, suav nrog hauv qhov tsaus ntuj, thaum nws txias dua sab nraud, lawv tau ua pov thawj lawv tus kheej zoo.
Tab sis feem ntau daim ntawv thov ntawm super-ci LEDs tuaj yeem hu ua teeb. Xws li cov khoom siv nrog cov khoom nruab rau hauv nws, piv txwv li Cree, muaj peev xwm nkag mus rau qhov tsaus ntuj nrog lub teeb ntawm qhov deb txog li 2-3 km. Nyob rau tib lub sijhawm, nws qhov kev siv hluav taws xob yuav nyob twj ywm ntawm qhov qis qis. Feem ntau, headbands yog siv los ntawm cov neeg nuv ntses thaum nuv ntses thaum hmo ntuj - lub teeb flux mus txog hauv qab los ntawm ib tug dej kem ntawm 3-4 meters.
Automotive LED daim ntawv thov
Tsis yog txhua lub ntsiab lus LED tsim nyog rau lub tsheb. Ntau yam xav tau tsuas yog 2-3 V lub zog, thaum lub tsheb sib txuas ntawm lub tsheb xav tau 12 V. Yog vim li cas cov chaw tsim khoom muaj cov khoom tshwj xeeb LED rau lub tsheb. Qhov tseem ceeb ntawm no yog kom nkag siab qhov twg koj tuaj yeem tso super-ci 12-volt LEDs, thiab qhov twg lawv yuav tsum tsis txhob ntsia. Tom qab tag nrho, yog hais tias xws li cov ntsiab lus nyob rau ntawm lub teeb nres, nws yog zoo li hais tias lawv yuav dig muag tus neeg tsav tsheb ntawm lub tsheb tom qab, thiab qhov no yuav tsis ua rau ib yam dab tsi zoo. Tsis tas li ntawd, tsis txhob nruab lawv nyob rau hauv lub backlight ntawm lub vaj huam sib luag - nws yuav tsis yooj yim sua kom tsav thaum hmo ntuj nrog xws li "tuning".
Nws yog qhov tsim nyog rau nruab super-ci LEDs ntawm 12 volts hauv lub teeb rov qab, qhov ntev, thiab tseem muaj teeb pom kev zoo sab hauv. Nyob rau hauv cov ntaub ntawv no, lub installation ntawm xws li cov cuab yeej yuav tsim nyog. Nws tuaj yeem suav nrog LEDs hauv Circuit Court raws li lub teeb qis, tab sis qhov no, nws yog ib qho tsim nyog los npaj cov huab cua zoo.cua txias. Ib qho piv txwv ntawm kev siv cov ntsiab lus ultra-ci yog Lexus tsheb.
LED kev khiav hauj lwm voltage
Ntau tus neeg them nyiaj ntau dhau rau qhov ntsuas no, tsis nkag siab nws lub ntsiab lus. Lub ntsiab lus ntawm no yog qhov no. Yog tias, piv txwv li, nws tau sau tias qhov ntsuas ntawm lub teeb ci ci ntsa iab yog 3 volts, daim duab no txhais tau tias tsuas yog qhov hluav taws xob poob thoob plaws nws. Ib qho tseem ceeb tshaj yog qhov kev khiav hauj lwm tam sim no ntawm lub caij, uas tuaj yeem ncav cuag 1 A.
Yuav tsum xav txog dab tsi thaum xaiv thiab txhim kho
Thaum xaiv ultra-ci LEDs rau nws pib lossis lwm yam kev siv, koj yuav tsum tau xyuam xim tsis yog rau cov yam ntxwv uas tau tshaj tawm los ntawm cov chaw tsim khoom, tab sis kuj rau cov tsos ntawm cov khoom, qhov zoo ntawm nws cov khoom siv. Feem ntau qhov cuav tuaj yeem tshawb pom txawm tias muaj kev tshuaj xyuas qhov muag nrog qhov muag liab qab. Cov LEDs cuav yuav muaj cov npoo jagged, thiab cov nti hauv qab lub lens feem ntau asymmetrical.
Tus nqi qis dua piv rau qhov nruab nrab ntawm lub khw yuav tsum ceeb toom tus neeg yuav khoom. Ua ntej mus rau lub khw, nws yog qhov zoo dua los ua kom paub koj tus kheej nrog cov nqi ntawm cov vev xaib raug cai ntawm cov tuam txhab cov khoom lag luam - qhov no yuav cawm koj ntawm kev yuav khoom tsis zoo.
Kev teeb tsa ntawm ultra-ci LEDs kuj yuav tsum tau ua raws li qee txoj cai. Txawm tias muaj qhov cua zoo, yog tias muaj qhov ua tau ntawm lub tshuab hluav taws xob ntxiv, nws tsim nyog ua. Thermal paste yuav tsum tau siv los txuas lub nti rau lub txias.
Qhov zoo thiab qhov tsis zoo ntawm kev sivcov ntsiab lus zoo heev
Zoo li txhua yam khoom siv, cov LEDs no muaj cov neeg txhawb nqa thiab cov neeg tawm tsam. Raws li kev tshawb fawb los ntawm lub tuam txhab ywj pheej, kwv yees li 30% ntawm cov neeg teb tau "tawm tsam" kev siv cov ntsiab lus LED. Qhov nthuav tshaj plaws yog vim li cas rau qhov tshwm sim ntawm tus cwj pwm tsis zoo yog kev siv super-ci LEDs rau teeb nyem. Tib neeg tau hais tias nws muaj kev phom sij heev thaum lub teeb ci ntsa iab rau ntawm qhov muag. Ib qho kev xav txawv txawv los ntawm cov neeg nyob hauv Tebchaws Meskas, qhov chaw xaiv tsa ntawm lub ncauj lus no.
Yeej, kev siv cov khoom zoo li no hauv cov teeb pom kev zoo muaj ntau qhov zoo dua qhov tsis zoo. Tau kawg, yog tias koj yuav cov khoom lag luam zoo, cov khoom lag luam muaj npe, nws cov nqi yuav siab, txawm li cas los xij, nws yuav kav ntev dua li qib qis diode pheej yig. Qhov tseem ceeb ntawm qhov teeb meem no yog los sib piv koj lub peev xwm nrog rau theem ntawm kev xav tau ntawm qhov tau txais.
Super-ci LEDs yog qhov tseem ceeb ntawm kev txhim kho LED cov ntsiab lus niaj hnub no. Tsis txhob yws tias lawv cov nqi siab heev. Zoo li lwm yam khoom siv, lawv yuav poob rau tus nqi dhau sijhawm. Txawm hais tias nws muaj peev xwm hais tias engineers yuav tsim ib co lwm yam tshiab uas yuav outshine ultra-ci LED. Raws li kev nce qib hauv txhua qhov chaw ua haujlwm, qhov no tsis tuaj yeem txiav tawm.
