Thaum tshawb fawb rau cov khoom lag luam LED, koj tuaj yeem hla qhov sib txawv 4 tus lej tsim rau LED hom. Thaum koj thawj zaug hla cov cim no, koj yuav nkag siab meej tias lawv txhais tau li cas! Nyeem rau kom paub qhov txawv ntawm hom LED ntau heev thiab dab tsi saib kom paub.
Ua ntej ntawm txhua yam, LED pob yog dab tsi?
Ib qho teeb txawb LED feem ntau muaj ntau lub LED teeb tsa rau hauv cov ntawv cog lus Circuit Court, feem ntau tau teev tseg ntawm qee cov lej ntom ntuag xws li 60 rau ib 'meter' rau cov hlua LED. Txhua ntawm cov LEDs, txawm li cas los xij, tuaj nyob hauv ntau hom hu ua pob khoom LED.
Lub pob LED yog cov ntaub ntawv yas rau hauv coj cov LED nti thiab phosphor. Cov LED nti yog cov khoom siv hluav taws xob semiconductor uas tso tawm lub teeb (xiav lub teeb) thiab cov khoom siv phosphor hloov qee qhov hluav taws xob no mus rau ntsuab thiab liab wavelengths. Cov sib xyaw no ua rau lub teeb dawb uas tsim los ntawm LED pob.
Ntau hom LED pob khoom hom
Cov LED ntim hom yog tsim los ntawm plaub tus lej xws li 3528, 5050, 3030 thiab 2835. Thawj ob tus lej xa mus txog qhov dav ntawm pob, thaum kawg ob tus lej xa mus txog nws qhov ntev, hauv kaum ntawm ib millimeter. Yog li piv txwv, 3528 pob LED muaj qhov dav ntawm 3.5 hli, thiab qhov ntev ntawm 2.8 hli.
Feem ntau hais lus, pob loj dua tuaj yeem tswj tau ntau dua cov hwj chim. Qhov no yog vim tias nws muaj thaj tsam saum npoo ntau dua rau dissipate tshav kub. Txawm li cas los xij, nco ntsoov tias qhov no tsis yog ib txoj cai nyuaj thiab nrawm. Lub 2835 pob, piv txwv li, muaj tib qhov loj cheeb tsam qhov ntev li ntawm 3528, tab sis yog cov pob txheej tshiab tsim uas tso cai rau ntau zog ntau zog. Cov khoom siv pob (piv txwv li PPA vs PCT vs ceramic) thiab cov qauv siv thermal txhua tus muaj lub zog ntawm lub zog zoo ib yam.
Tiam 1 LEDs: 3528 thiab 5050
Thawj tiam ntawm saum npoo style LEDs tuaj hauv 3528 thiab 5050 ntau thiab tsawg. Lub 3528 feem ntau muaj ib qho 20 mA LED nti (kwv yees 0.06 Watts) thiab 5050 feem ntau muaj peb 20 mA LED chips (kwv yees 0.2 Watts). Yog li ntawd, ib qho 5050 LED pob tau muaj peev xwm ntawm 3x 3528 LEDs.
Ntxiv rau qhov muaj peev xwm ntau dua, vim tias 5050 pob feem ntau muaj chaw txaus rau peb qhov sib txawv LED chips, nws yog cov qauv nrov ntawm ntim RGB LEDs uas xav tau ntau xim. Tau kawg, lawv tseem tuaj yeem siv los teeb ib cov xim dawb LEDs, hauv peb lub npav xiav LED yuav siv.
Muaj qee tus 3528 RGB LEDs, tab sis cov feem ntau muaj tsuas yog ib qho xim ib LED xwb. Qhov no tuaj yeem tsim teeb meem ntxiv uas koj yuav pom qee qhov ntxoov ntxoo lossis hloov xim vim qhov chaw tsis sib xws. Vim tias RGB LED chips nyob hauv ib lub pob tib si rau 5050 LED, qhov taw tes tib lub hom phiaj ua haujlwm zoo dua.
Tiam 2: 2835 thiab 5730
Qhov thib ob tiam ntawm LED hom pom qhov nce ntawm lub zog ceev. 2835 LED yog ib txwm tsav ntawm 60 mA txhua (0.2 Watts) thaum 5730 LED yog ib txwm tsav ntawm 150 mA txhua (0.5 Watts). Vim tias kev txhim kho nyob rau hauv LED nti thev naus laus zis thiab pob thermal tsim kev txhim kho, lub zog ntawm qib LED tau nce ntau. Nyob rau hauv kev muaj tiag, qee theem ntawm lub zog ntawm LEDs yuav tshaj qhov kev paub txhua qhov muaj peev xwm ntawm cov kab hluav taws xob LED vim tias cov thermal hluav taws xob ntawm cov kab hluav taws xob LED muaj tsawg vim yog cov khoom siv thiab tsis muaj cov dej taws kub.
Qhov thib ob tiam 2835 thiab 5730 LEDs tseem muaj cov nyiaj them qis dua. Yog tias koj xav tau kom haum cov hlua LED nyob rau hauv qhov chaw nrog qhov chaw tsis tshua muaj ntsug, qhov no tuaj yeem yog qhov ua tau zoo, thiab ntxiv rau, cov pob qauv no tsim cov teeb meem tsawg dua nrog fringe yellowing.
Lwm cov pob khoom
3014 tej zaum yuav yog lwm lub pob LED pob uas koj tuaj hla. Cov LED no tau tsim los ua kom tsis tshua muaj zog (kwv yees li 20 mA txhua) thiab feem ntau siv hauv LCD backlighting daim ntawv thov qhov twg siab LED suav xav tau rau kev sib sau. Ib yam li ntawd, muaj cov LED sawb teeb cov khoom uas muaj cov LED no hauv cov qauv ntawm cov duab uas muaj qhov siab txhawm rau txhawm rau tsim qhov teeb tsa tsis sib thooj.
3030 LEDs tseem pom tau siv ntawm cov hlua LED. Ntau cov khoom lag luam no tau txais txiaj ntsig zoo ntawm cov kab hluav taws xob uas tsis muaj kev sib txig sib cais kom pom kev zoo li lawv tuaj yeem ua khub nrog kev ua kom zoo dua qub thiab xaim hluav taws xob. 3030 LEDs yog ib txwm tsim los khiav ntawm 300 mA lossis ntau dua (txog 1.0 Ntev) tab sis vim muaj kev txhawj xeeb thermal feem ntau tsis khiav ntawm qhov muaj peev xwm ntawm cov kab hluav taws xob LED teeb.
Hauv qab kab
Thaum xaiv cov kab hluav taws xob LED, hom LED tuaj yeem yog ib qho tseem ceeb tshaj plaws ntawm nws qhov kev ua tau zoo. Nco ntsoov txiav txim siab qhov zoo thiab ua tau zoo ntawm ib leeg LED qib ntxiv rau qhov ntau tag nrho, vim qhov no tuaj yeem ua rau tag nrho kev ua tau zoo.
