Yuav ua li cas xaiv LED fluorescent teeb|LED teeb - Paub txog kev yuav khoom LED fluorescent teeb fais fab mov
Tam sim no, lub lag luam LED fluorescent teeb yog heev nquag, thiab manufacturers feem ntau muab faib ua peb pawg: thawj hom yog lub Hoobkas uas siv los ua LED chips, uas nkag mus rau hauv qab, thiab muaj me ntsis kev nkag siab txog Circuit Court kev paub thiab LED fluorescent teeb lub zog. ; hom thib ob yog thawj lub teeb pom kev zoo Factory, nkag mus rau qhov chaw tshiab, lub voj voog
Paub qee qhov kev paub; pawg thib peb yog lub Hoobkas tshiab kiag li, lawv tau siv los ua lwm yam khoom lossis kev lag luam tshiab, qee qhov kev nkag siab ntawm LED fais fab mov, qee qhov tsis ua. LED fluorescent teeb fais fab mov yog qhov tseem ceeb tshaj plaws ntawm LED fluorescent teeb. Yog tias LED fluorescent teeb tsis raug xaiv kom raug, LED fluorescent teeb yuav tsis muaj peev xwm ua kom nws ua tau zoo lossis tseem siv tau ib txwm. Hauv cov txheej txheem ntawm kev koom tes nrog cov neeg siv khoom, peb pom qee qhov kev nkag siab yuam kev. Nov yog qee cov lus qhia rau cov neeg siv khoom xa mus rau thaum xaiv.
1. Vim li cas qhov tam sim no yog qhov tsim nyog: Cov yam ntxwv ntawm LED semiconductors txiav txim siab tias nws cuam tshuam rau ib puag ncig. Piv txwv li, raws li qhov kub thiab txias hloov, qhov tam sim no ntawm LED nce, thiab qhov nce ntawm qhov hluav taws xob, qhov tam sim no ntawm LED yuav nce ntxiv. Lub sijhawm ua haujlwm ntev tshaj li qhov ntsuas tam sim no yuav ua rau lub neej ua haujlwm ntawm LED luv luv. Thiab LED tsis tu ncua tam sim no
Nws yog los xyuas kom meej tias cov kev khiav hauj lwm tam sim no tseem tsis hloov thaum ib puag ncig yam xws li kub thiab voltage hloov.
2. Qhov sib txuam ntawm LED fluorescent teeb lub zog hluav taws xob thiab lub teeb lub rooj tsav tsheb: qee cov neeg siv khoom tsim lub teeb lub rooj tsavxwm ua ntej, thiab tom qab ntawd nrhiav cov khoom siv hluav taws xob, thiab pom tias nws tsis yooj yim kom muaj lub zog tsim nyog, lossis qhov tam sim no loj heev, voltage tsawg dhau (xws li I> 350mA, V< 40v);="" los="" yog="" tam="" sim="" no="" me="" me="" dhau="" thiab="" qhov="" hluav="" taws="" xob="" siab="" dhau="" (xws="" li="" i＜40ma,="" v＞180v),="" ua="" rau="" kev="" sib="">
Yog tias cov cua sov hnyav, qhov ua tau zoo yog qhov tsawg, lossis qhov input voltage ntau tsis txaus. Qhov tseeb, xaiv txoj kev sib txuas zoo tshaj plaws ntawm kev sib txuas, qhov hluav taws xob thiab tam sim no siv rau txhua lub LED yog tib yam, tab sis cov khoom siv hluav taws xob tuaj yeem ua haujlwm zoo tshaj plaws. Txoj kev zoo tshaj plaws yog kev sib txuas lus nrog cov chaw tsim khoom siv hluav taws xob ua ntej, thiab txiav nws.
3. Kev ua haujlwm tam sim no ntawm LED: qhov ntsuas kev ua haujlwm tam sim no ntawm cov LED dav dav yog 20 mA, thiab qee lub chaw tsim khoom siv nws thaum pib, thiab tus qauv tsim yog 20 mA. Qhov tseeb, kev ua haujlwm tam sim no nyob rau hauv qhov tam sim no yog qhov hnyav heev. Tom qab ntau qhov kev sib piv, tus qauv tsim yog 16-18 mA yog qhov zoo tagnrho. Tag nrho tam sim no ntawm N parallel kev sib txuas=17 * N;
4. LED ua hauj lwm voltage: Feem ntau, qhov pom zoo ua hauj lwm voltage ntawm LED yog 3.0-3.5V. Tom qab kev sim, feem ntau ntawm lawv ua haujlwm ntawm 3.125V, yog li cov qauv kev suav ntawm 3.125V yog qhov tsim nyog dua. Tag nrho qhov voltage ntawm M teeb hlaws hauv series=3.125 * M
5. Kev sib txuas ntawm cov kab sib txuas thiab qhov dav dav ntawm LED lub teeb vaj huam sib luag: Ua kom cov roj teeb fluorescent ua haujlwm nyob rau hauv ntau hom input voltage AC85-265V, series-parallel kev twb kev txuas ntawm LED teeb panels yog ib qho tseem ceeb heev. Txij li thaum tam sim no lub hwj chim mov feem ntau yog ib qho uas tsis yog-kauj ruam-down fais fab mov, thaum ib tug dav voltage yuav tsum tau, qhov tso zis voltage yog tsis yuav tsum tau.
Tshaj 72V, qhov input voltage ntau tuaj yeem ncav cuag 85-265V. Hauv lwm lo lus, tus naj npawb ntawm cov series tsis tshaj 23 series. Tsis txhob txuas ntau dhau mus ua ke, txwv tsis pub ua haujlwm tam sim no yuav loj dhau thiab qhov kub yuav hnyav. Nws raug pom zoo kom ua 6-parallel / 8-parallel / 12-parallel. Tag nrho cov tam sim no yuav tsum tsis pub tshaj 240 mA.
Kuj tseem muaj cov kev daws teeb meem dav dav, uas yog siv L6561/7527 kom nce qhov hluav taws xob mus rau 400V ua ntej, thiab tom qab ntawd nqis, uas yog sib npaug rau ob lub zog hloov hluav taws xob, thiab tus nqi yog ob zaug kim. Cov tshuaj no tsis raug nqi thiab tsis muaj kev lag luam.
6. Kev sib raug zoo ntawm cov koob thiab kev sib txuas ntawm cov LEDs thiab PFC lub zog hluav taws xob thiab qhov dav dav; tam sim no muaj peb kis ntawm cov khoom siv hluav taws xob PFC nyob rau hauv kev ua lag luam: ib qho yog tsis muaj PFC lub zog hluav taws xob, thiab PFC feem ntau nyob ib ncig ntawm 0.65; lwm qhov yog nrog passive PFC Circuit Court Yog, lub teeb board tau npaj zoo, thiab PFC feem ntau nyob ib ncig ntawm 0.92; Lwm hom yog tsim nrog 7527/6561 circuits, thiab PFC tuaj yeem ncav cuag 0.99, tab sis tus nqi ntawm cov tshuaj no yog ob zaug kim dua li cov tshuaj thib ob.
Yog li cov txheej txheem thib ob yog ntau dua.
Rau passive PFC circuits: tseem hu ua valley-filled PFC circuits, kev khiav hauj lwm voltage ntau yog ib nrab ntawm cov nqi siab tshaj ntawm AC input voltage. Yog hais tias lub tswv yim yog 220V, nws cov nqi siab tshaj yog 220 * 1.414=310V, ib nrab ntawm lub ncov voltage yog 155V, thiab rho tawm 1/2 ntawm ib nrab voltage ntawm ob lub capacitors nyob rau hauv series, qhov siab tshaj plaws tso zis yog 77V, yog li tus naj npawb ntawm LED teeb hlaws hauv series yog txog 24 txoj hlua. Qhov no yog vim li cas lub teeb vaj huam sib luag ntawm lub khw feem ntau ua rau 23 txoj hlua lossis 24 txoj hlua. Yog hais tias lub tswv yim yog 110V, cov zis nrog PFC fais fab mov yog: 110 * 1.414 * 1/4=38V, thiab tus naj npawb ntawm cov hlaws dai uas tuaj yeem nqa tau yog 12 txoj hlua. Yog li ntawd, nyob rau hauv 110V cheeb tsam, nws yog ib qho teeb meem ntau dua rau coj PFC, thiab tus naj npawb ntawm cov hlaws teeb yuav tsis muaj ntau tshaj 12 txoj hlua. Yog li ntawd, thiaj li yuav tau txais lub hwj chim loj, tus naj npawb ntawm lub teeb hlaws hauv series tsis tuaj yeem muaj ntau dhau, txwv tsis pub, qhov yuav tsum tau muaj hluav taws xob tsawg yuav tsis raug.
7. Qhov tseeb tam sim no: Qhov tseeb tam sim no ntawm qee cov khoom siv hluav taws xob hauv kev lag luam yog qhov tsis zoo, xws li PT4107 / HV9910 / BP2808 / SMD802 nrov program thiab lwm yam kev daws teeb meem tam sim no, qhov yuam kev tuaj yeem ncav cuag ± 8% lossis ± 10% , qhov yuam kev tam sim no loj dhau. Qhov kev xav tau dav dav yog nyob rau hauv ± 3%. Raws li qhov yuam kev ntawm 3%, 6 lub voj voog txuas nrog rau qhov sib npaug, thiab qhov yuam kev ntawm txhua lub voj voog yog li ± 0.5%. Yog hais tias 12 circuits txuas nrog nyob rau hauv parallel, qhov yuam kev ntawm txhua lub voj voog yog li ± 0.25%, uas yog txaus. Yog tias qhov tseeb siab dhau lawm, tus nqi yuav nce siab heev. Thiab rau LEDs, 16 mA thiab 18 mA muaj kev cuam tshuam me ntsis.
8. Kev rho tawm / tsis sib cais: Feem ntau, yog tias cov khoom siv hluav taws xob sib cais tau ua rau 15W thiab muab tso rau hauv lub raj LED, lub transformer loj heev thiab nyuaj rau muab tso rau hauv, tshwj xeeb tshaj yog rau T6 / T8 teeb, nws yuav luag tsis yooj yim sua, yog li ntawd. Qhov kev sib cais feem ntau tsuas yog 10W, thiab muaj tsawg dua 10W, thiab tus nqi kim heev. Yog li ntawd, kev cais tawm tsis raug nqi. Feem ntau, cov khoom uas tsis yog cais tawm tswj hwm lub ntsiab. Qhov ntim tuaj yeem ua kom me me, nrog qhov siab tsawg kawg nkaus ntawm 8 mm. Qhov tseeb, kev ntsuas kev ruaj ntseg tsis nyob ib leeg nyob hauv qhov chaw thiab tsis muaj teeb meem.
9. Kev ua haujlwm ntawm lub zog thiab lub zog ua haujlwm: Lub zog ua haujlwm yog qhov piv ntawm lub zog ua haujlwm rau tag nrho lub zog (￠). Lub zog reactive uas tseem tshuav yog hloov mus rau ib leeg hauv daim phiaj fais fab. Tus neeg siv lub ntsuas ntsuas tsis ntsuas lub zog reactive. Ib qho kev cuam tshuam yog tias lub chaw muab hluav taws xob tsis tuaj yeem tau txais tus neeg siv' s reactive zog nyiaj. Qhov kev ua tau zoo (y) yog qhov piv ntawm cov zis hluav taws xob rau lub zog hluav taws xob, uas yog, lub zog tso zis (tso zis LED voltage * tso zis tam sim no) / lub zog tawm tswv yim. Qhov parameter no tseem ceeb heev. Nws cuam tshuam txog kev txaus siab ntawm cov khoom thiab cov neeg siv khoom. Yog tias qhov ua tau zoo tsawg, nws txhais tau hais tias Ib feem loj ntawm cov khoom siv hluav taws xob hloov mus rau hauv cov cua sov kom tawm; Yog hais tias nws yog ntsia rau hauv lub teeb raj, qhov kub siab heev yuav raug generated, thiab lub teeb efficiency piv ntawm peb LED yuav superimposed los ua kom kub siab dua. . Thiab lub neej ntawm tag nrho cov khoom siv hluav taws xob hauv peb cov khoom siv hluav taws xob yuav luv luv nrog qhov kub thiab txias. Kev ua haujlwm siab, kev ua haujlwm siab ntawm kev hloov dua siab tshiab rau hauv lub teeb, thiab lub zog tsim hluav taws xob ntawm lub zog hluav taws xob thiab lub teeb lub teeb yuav raug txo, uas yog sib npaug rau kev txuag hluav taws xob, cov khoom lag luam kev ua tau zoo thiab lub neej ntev yuav txhim kho. Yog li ntawd, kev ua tau zoo yog qhov tseem ceeb tshaj plaws uas txiav txim siab lub neej ntawm cov khoom siv hluav taws xob. Kev ua haujlwm tsis tuaj yeem qis dhau, txwv tsis pub cov cua sov uas siv rau ntawm lub zog hluav taws xob loj dhau. Feem ntau saum 0.8-0.9 yog qhov zoo.
Ob qhov ntsuas ntawm lub zog thiab kev ua haujlwm qee zaum txwv ib leeg, thiab tseem muaj feem cuam tshuam rau cov khoom siv tam sim no. Txhawm rau txhim kho kev ua tau zoo, cov zis yuav tsum siab npaum li qhov ua tau thiab qis tam sim no. Cov txheej txheem kev tswj hwm sab hauv ntawm peb lub tuam txhab feem ntau yog 0.80-0.90 rau kev siv fais fab thiab 0.82-0.90 rau kev ua haujlwm. Thaum peb cov neeg siv khoom uas twb muaj lawm xaiv ntawm lub hwj chim thiab kev ua tau zoo, lawv feem ntau nyiam txhim kho kev ua tau zoo, thiab lub zog muaj zog tshaj 0.80.
10. Loj: Qhov siab yog qhov tseem ceeb ntawm kev txwv. Feem ntau, qhov loj ntawm T6 raj / T8 xav kom qhov siab yuav tsum tsis txhob siab dhau ≤ 9 hli. Qhov siab ntawm T10 raj yog tsawg dua los yog sib npaug li 15 hli.
11. Daim ntawv pov thawj CE: LED fluorescent teeb tam sim no siv rau kev xa tawm, thiab cov teb chaws txawv teb chaws feem ntau xav tau ntawv pov thawj CE. CE muaj ob ntu. Ib qho yog cov lus qhia qis-voltage, feem ntau yog rau rwb thaiv tsev thiab high-voltage kuj, uas feem ntau ua tiav; lwm qhov yog cov lus qhia ntawm electromagnetic compatibility, uas feem ntau yog hais txog EMC, electromagnetic cuam tshuam thiab tiv thaiv kev cuam tshuam, uas nyuaj rau ua tiav. Txhawm rau paub qhov txawv ntawm cov khoom tau dhau daim ntawv pov thawj CE, nws tuaj yeem pom los ntawm cov khoom siv hluav taws xob uas cov tswv yim nrog lim capacitor thiab toroidal hom inductor tuaj yeem dhau CE cov khoom. Yog tias tsis muaj hom hom inductor, nws yog ib qho kev dag ntxias hais tias nws dhau CE.
