Kaum Me Me Secrets ntawm LED Txoj Kev Teeb Technology

LED teeb pom kev lag luam kev lag luam teeb pom kev lag luam tsis yog tsuas yog cuam tshuam los ntawm lub ntiaj teb ib puag ncig, tab sis kuj yog nws cov yam ntxwv tshwj xeeb ntawm kev lag luam. LED txoj kev lub teeb fais fab mov yog qhov tseem ceeb tshaj plaws ntawm kev txhim kho LED tam sim no. Rau cov qauv tsim hauv LED thev naus laus zis, tam sim no muaj ntau yam kev daws teeb meem thiab cov txheej txheem tsim tshwj xeeb. Cia wb mus saib lawv ib leeg. Vim li cas LED txoj kev teeb lub teeb hluav taws xob tas li? Cov yam ntxwv ntawm cov khoom siv teeb pom kev zoo LED txiav txim siab tias nws muaj kev cuam tshuam ntau dua rau ib puag ncig. Piv txwv li, qhov kub hloov pauv nce, qhov tam sim no ntawm LED yuav nce, qhov voltage nce, thiab tam sim no ntawm LED yuav nce. Lub sij hawm ntev tshaj qhov kev ua haujlwm tam sim no yuav ua rau luv luv LED teeb hlaws. LED tsis tu ncua tam sim no yog los xyuas kom meej tias nws cov nqi ua haujlwm tam sim no tsis hloov pauv thaum ib puag ncig yam xws li kub thiab voltage hloov. 2. LED txoj kev teeb hluav taws xob fais fab mov fais fab Hengli qhov tseeb Qhov tsis tu ncua tam sim no ntawm kev ua lag luam tsis zoo, zoo li cov phiaj xwm muaj koob npe ntawm kev ua lag luam, xws li cov phiaj xwm kwj nrov, qhov yuam kev mus txog ±8%, qhov tsis tu ncua tam sim no yuam kev loj heev. Tsis txwm ±3%. Raws li 3% kev tsim qauv. Cov khoom siv hluav taws xob ntau lawm yuav tsum ua kom zoo-tuned ua ntej nws tuaj yeem ua tiav ±3% tswm. 3. Lub zog ua haujlwm ntawm LED txoj kev teeb lub zog hluav taws xob yog feem ntau 3.0-3.5V. Tom qab kev sim, feem ntau ntawm lawv ua haujlwm hauv 3.2V, yog li kev suav ntawm 3.2V yog qhov tsim nyog dua. Tag nrho qhov hluav taws xob ntawm n teeb hlaws hauv series = 3.2 * N4, LED txoj kev teeb lub zog hluav taws xob tam sim no yog qhov tsim nyog tshaj plaws, xws li cov ntsuas ua haujlwm tam sim no ntawm LED 350 mAh, qee qhov chaw tsim khoom siv thaum pib, thiab tus tsim yog 350 mAh. Qhov tseeb, kev ua haujlwm hauv qab no yog kub heev. Tom qab ntau qhov kev sib piv, nws yog qhov zoo tshaj plaws los tsim 320 mAh. Sim txo cov cua sov ntawm cov plaub hau, kom cov hluav taws xob ntau dua tuaj yeem pom lub teeb pom kev zoo. 5. Yuav ua li cas lub series thiab dav voltage ntawm LED txoj kev teeb hluav taws xob board? Ua kom cov LED txoj kev teeb lub zog ua haujlwm nyob rau hauv qhov ntau ntawm cov input voltage ntau, AC85-265V, LED series thiab txuas txoj kev ntawm lub teeb lub rooj tsavxwm yog ib qho tseem ceeb heev. Sim tsis txhob siv qhov hluav taws xob dav dav li ntau li ntau tau, tuaj yeem muab faib ua AC220V, thiab AC110V yog txheeb raws li qhov ua tau, txhawm rau ua kom muaj kev ntseeg siab ntawm cov khoom siv hluav taws xob. Txij li cov khoom siv hluav taws xob tam sim no feem ntau yog qhov tsis sib cais -voltage tas li tam sim no lub zog hluav taws xob, thaum qhov hluav taws xob yog 110V, cov zis hluav taws xob tsis tshaj 70V, thiab cov xov tooj ntawm cov kab tsis tshaj 23 txoj hlua. Thaum lub input voltage 220V, qhov tso zis voltage tuaj yeem ncav cuag 156V. Nyob rau hauv lwm yam lus, tus naj npawb ntawm series tsis tshaj 45 hlua. Tsis txhob muaj tus lej sib npaug ntau dhau, txwv tsis pub cov kev ua haujlwm tam sim no loj dhau, thiab cov khoom siv hluav taws xob tau kub heev. Kuj tseem muaj qhov dav-voltage tov. APFC qhov kev them nyiaj hluav taws xob yog siv L6561/7527 kom nce qhov hluav taws xob mus rau 400V, thiab tom qab ntawd txo qhov voltage. Cov tshuaj no tsuas yog siv nyob rau hauv tej yam kev mob. 6, kev sib cais / tsis yog kev sib cais dav dav kev sib cais hluav taws xob, yog tias nws tau tsim rau hauv 15W, muab tso rau hauv LED txoj kev lub teeb fais fab yeeb nkab, nws cov transformer loj heev, nws nyuaj rau muab tso rau hauv. Nws tsuas yog nyob ntawm qhov chaw qauv nyob ntawm qhov xwm txheej tshwj xeeb. Feem ntau, kev sib cais tsuas tuaj yeem ua tiav 15W, tsawg dua 15W, thiab tus nqi kim heev. Yog li ntawd, tus nqi-effectiveness ntawm kev sib cais tsis yog siab. Feem ntau, tsis yog-kev rho tawm nyiaj rau ntau lub hauv paus, qhov ntim tuaj yeem me dua, thiab qhov tsawg kawg nkaus tuaj yeem yog 8 hli siab. Qhov tseeb, kev ntsuas kev nyab xeeb tsis nyob ib leeg yog ua tiav. Qhov chaw tso cai kuj tseem siv tau los ua ib qho kev sib cais fais fab. 7. Yuav ua li cas thiaj li LED txoj kev teeb fais fab sib xyaw nrog lub teeb hlaws? Qee cov neeg siv khoom ua ntej tsim lub teeb lub rooj tsavxwm, thiab tom qab ntawd nrhiav cov khoom siv hluav taws xob. Nws yog ib qho nyuaj rau nrhiav tau lub hwj huam uas tsim nyog, txawm tias qhov tam sim no loj heev, thiab qhov hluav taws xob tsawg dhau (xws li 7x1wi > 350mA, los yog V25V), qhov tshwm sim yog kub heev, tsis tshua muaj efficiency, los yog tsis txaus input voltage ntau. Qhov tseeb, xaiv txoj hauv kev zoo tshaj plaws los txuas nrog txhua lub LED yog tib yam, tab sis cov txiaj ntsig ntawm cov khoom siv hluav taws xob tuaj yeem ua tau zoo tshaj plaws. Txoj kev zoo tshaj plaws yog kev sib txuas lus nrog cov tuam txhab hluav taws xob ua ntej thiab txiav-ua. Yog li ntawd, tsis muaj kev nyuaj siab. 8. LED's skewers thiab PFC fais fab xwm txheej cais tawm tswv yim AC220V high -voltage kawg electrolytic capacitance muaj peev xwm feem ntau input fais fab 1W = 1UF, AC110V1W = 2UF tam sim no muaj peb kis ntawm lub hwj chim mov PFC: ib qho yog tsis muaj PFC tsis muaj hwj chim yam them nyiaj them rau kev mob siab rau circuits, lub PF tus nqi feem ntau yog nyob ib ncig ntawm 0.65; Qhov thib ob yog qhov kev them nqi hluav taws xob tsis zoo PFC Circuit Court, uas yog, qhov them nyiaj lub teeb ntawm lub zog hluav taws xob tsis zoo, thiab cov khoom siv hluav taws xob ntws tam sim no yog qhov zoo tshaj plaws kev ntseeg siab, PF PF, PF Tus nqi feem ntau yog nyob ib ncig ntawm 0.92; Peb hom active 7527/6561 Circuit Court kuj tseem siv tau, uas yog, them nyiaj rau qhov khoom siv hluav taws xob, hu ua AC220V hauv APFC circuit, AC110V tuaj yeem siv electrolytic capacitors ntawm tib lub peev xwm, xaiv 1W = 1W = 1.5uf. Tus nqi PF tuaj yeem ncav cuag 0.99, tab sis tus nqi ntawm cov tshuaj no yog me ntsis phem dua li cov tshuaj thib ob. Yog li kev daws thib ob yog siv ntau dua. Rau passive PFC Circuit Court: tseem hu ua Chan-type PFC Circuit Court, nws DC kev khiav hauj lwm voltage ntau yog ib nrab ntawm lub ncov ntawm AC input voltage. Yog hais tias lub tswv yim yog 220V, nws lub ncov yog 220 * 1.414 = 312V, thiab ib nrab ntawm lub ncov voltage yog 156V. Yog li ntawd, tus naj npawb ntawm LED txoj kev lub teeb lub hwj chim hlaws yog txog li 45 txoj hlua hauv qab no. Yog li ntawd, yog tias koj xav kom tau txais ib qho tseem ceeb ntawm lub zog loj, tus naj npawb ntawm cov teeb yuav tsum tsis txhob me me, txwv tsis pub lub xeev ua haujlwm zoo tshaj plaws yuav tsis ua tiav. Lub hwj chim muab hluav taws xob yuav tsum ua kom tau raws li lub zog tso zis. Qhov me me tam sim no ua haujlwm tam sim no ntawm cov khoom siv hluav taws xob hauv qhov ntsuas hluav taws xob ua haujlwm, lub neej ntev dua, lub neej luv dua yuav. LED txoj kev lub teeb fais fab hlaws dai yog qhov nkag siab zoo rau qhov kev sib txuas lus. Qhov siab dua ntawm kev sib txuas lus, qhov kev nplij siab ntawm lub teeb tsis zoo. Feem ntau, electrolytic capacitors yuav tsum tau siv los tswj qhov hluav taws xob, thiab qhov hluav taws xob ntawm qhov hluav taws xob qhov hluav taws xob kawg yog siv ntau li ntau tau. Lub peev xwm ntawm electrolytic capacitance kawg ntawm qhov hluav taws xob hauv qab yuav tsum tsis txhob tsawg dhau. Tsis yog-isolation input kawg high-voltage electrolytic capacitance xaiv yog tib yam li kev rho tawm, thiab cov zis-kawg capacitor xaiv 1UF