Dimmer, hloov lub luminous flux ntawm lub teeb nyob rau hauv lub teeb pom kev zoo, thiab kho cov theem ntawm illumination. Lub hom phiaj ntawm lub dimmer yog kho lub ci ci ntawm lub teeb. Los ntawm kev txo lossis nce RMS voltage los ua qhov nruab nrab lub zog ntawm lub teeb uas ua los ntawm qhov sib txawv ntawm cov teeb zis. Txawm hais tias tsis tshua muaj pes tsawg tus voltage devices yuav siv tau rau ntau lub hom phiaj, txoj cai tswjfwm no yog tsim los tswj cov teeb pom kev zoo.

Hom:

Muaj peb hom LED dimmer:

1. Pulse dav tes taws los piav (Pulse Width Modulation, raug xa mus rau PWM) yuav ua rau lub square square digitization, thiab tswj cov square wave voj voog, thiaj li mus cuag lub hom phiaj ntawm kev tswj tam sim no.

2. Cov kev cai tswj fais fab (Current regulation current analogue linear technology) tau yooj yim kho qhov loj ntawm qhov tam sim no.

3. Kev tswj hwm pawg yuav ntau dua ntawm cov pab pawg ua ke, nrog kev tswj cov lus yooj yim.

Qhov saum toj no 1.2. Ob txoj kev tuaj yeem siv los kho lub pob txha kho kom haum rau kev tswj tsis tau sib luag. Raws li lub tshuab PWM module paub tab, txo nqi. Nws tsis yooj yim los txiav txim ntawm sab nqi yog kev siv li cas txoj kev tswj kev khiav. Txawm li cas los xij, tus kho resistor nws tus kheej tsis yog ib qho khoom xyaw feem ntau. Feem ntau vim tias cov plua tshauv mus rau hauv txoj kev tsim los yog tsis nruj, nyob rau hauv kev lag luam ntawm adjustable tsis kam thaum yuav muaj ib lub caij ntawm dhia ntawm lub teeb meem, ces lub teeb yuav ntsais. Qhov no flashing hauv rooj plaub ntawm PWM tsis pom tseeb, kev siv cov cuab yeej tawm los tswj cov teeb meem tam sim no ntau cuab kev.

Txawm tsis muaj txoj hauv kev uas tam sim no tau tswj hwm, nws tuaj yeem hloov mus rau Tact Switch lossis hloov lwm lub pob ntawv (xws li lub pob ntawv, cov chaw taws teeb tswj) kom tswj tau lub teeb. Qhov kev zoo no yog kev ntseeg tus kheej, lub neej kev pab ntau dua. Nws yog ib qho tsim nyog yuav tau siv kev kho kom yooj yim rau kev tswj kom tsis txhob muaj teeb pom kev zoo, nws pom zoo kom siv cov cuab yeej zoo (feem ntau yog ob peb duas las rau 10 las).

Seb tus LED yog tsav los ntawm ib tug phaw, boost, phaw / boost los yog tus tswj qhov ncaj, feem ntau cov xov uas txuas txhua qhov kev sib tsoo hluav taws xob yog qhov yuav tsum tau tswj lub qhov tso zis ntawm lub teeb. Niaj hnub no, tsuas yog ib co xov tooj ntawm cov ntawv tsuas yog yuav tsum qhib thiab kaw qhov yooj yim, feem coob yuav tsum tau 0 ~ 100% rau nplua-qhib lub teeb. Nyob rau tam sim no, kev tswj fais fab, qhov loj ob lub ntsiab rau txoj kev hloov ntawm cov LED tam sim no (analog dimming) lossis hauv lub qhov muag liab qab tsis tuaj yeem txhom tau qhov siab, yog li ntawd tus tsav tam sim no los ntawm 0 mus rau lub hom phiaj ntawm tus nqi tam sim no hloov rov qab los (cov teeb). Kev siv cov mem tes hloov dav hlau (PWM) los txhim kho lub voj voog thiab cov voj voog vev xaib yuav yog qhov nyuaj tshaj plaws kom ua tau cov digital dimming, vim tib lub tshuab siv tau los tswj tau feem ntau ntawm cov chaw hloov khoom txig.

Kev taw qhia txog kev kaw lus:

Slotted hloov dimming:

Kev siv ntawm phab ntsa ntawm qhov teeb meem zoo tib yam yuav ua tau tiav 4-channel dimming, thawj qhib rau tag nrho lub teeb, qhov thib ob qhib 60% brightness, peb qhib rau 40% brightness, plaub qhib rau 20% brightness. Qhov zoo ntawm qhov system no yog qhov uas koj tuaj yeem siv cov cuab yeej nta hluav taws xob los ua kom dimming. Thiab nws lub zog muaj nqis txog li 0.92 los yog ntau dua. Yog tsis muaj teeb meem cuam tshuam generated. Qhov tsis zoo yog tias nws tsis tuaj yeem yuav dim mus tsis tu ncua. Muaj qee cov teeb meem kev khiav hauj lwm.

Chaw taws teeb tswj tsis pub nres:

Infrared cov chaw taws teeb tswj kom luag dimming LED. Qhov no yog ntawm chav kawm qhov zoo tagnrho kua. Yuav tsum pom tau hais hloov teeb, thiab nrog PWM nruam dimming. Qhov tsis zoo yog qhov siab, tsis muaj qhov tshwj xeeb tshaj plaws, tsuas yog siv tau rau cov tsev nyob siab.

Qhov tseeb, peb yuav tsum rov qab los xav txog qhov uas peb xav ua kom lub hom phiaj tseem ceeb tshaj ntawm qhov tsis zoo. Tag nrho cov hom phiaj uas twb tau teev tseg lawm yog tsim los ua kom tau raws li cov kev xav tau ntawm cov neeg hauv tsev hauv ntau lub sij hawm xav tau kev sib txawv sib txawv. Piv txwv, thaum saib TV yuav tsaus, nyeem lub sijhawm yuav ci ntsa iab. Feem ntau ntawm cov no yog nyob hauv tsev. Ntau qhov chaw ua hauj lwm, khw malls, factories, cov tsev kawm ntawv muaj teeb ntom xim. Thiab feem ntau ntawm cov chaw no muaj teeb pom kev zoo siv lub teeb ntsa hluav taws xob, lub teeb txuag hluav taws xob, nws tsis tuaj yeem tsis yooj yim los yog tsis yooj yim rau txoj kev ua kom tsis tiav.

Epoch-ua rau lub zog txuag thiab khi rau:

Txij li thaum tib neeg nco ntsoov yuav tsum ua txhua yam ua tau kom txo kev siv zog, thiaj li daws tau cov teeb meem ntawm cov cua sov thaum muaj cua sov, yuav ua li cas thiaj li txo qhov hluav taws xob hluav taws xob ua ib qho teeb meem tseem ceeb uas hais txog ntawm cov txheej txheem. Vim tias cov teeb pom kev siv hluav taws xob tau siv 20 feem pua ​​ntawm kev siv zog tag nrho.Txawm li ntawd los, muaj lub zog siv hluav taws xob txuag tau zoo heev, LED nws tus kheej ntau dua 5 zaug ntxiv zog tshaj lub teeb hluav taws xob tshaj lub teeb hluav taws xob, lub teeb txuag hluav taws xob muaj txuag txog ob zaug, tsis yog xws li fluorescent teeb, hluav taws xob txuag hluav taws xob muaj mercury. Yog hais tias koj tuaj yeem siv dimming kom txuag tau lub zog, ces nws tseem yog ib qho tseem ceeb ntawm kev txuag hluav taws xob. Tab sis yav tag los txhua lub teeb yog yooj yim heev ncav cuag, thiab yooj yim dimming LED yog ib qho zoo kawg thiab kom zoo dua. Vim hais tias nyob rau hauv ntau lub sij hawm nws tsis yog yuav tsum tau qhib lub teeb los yog tsawg kawg tsis yog li ci, tab sis lub teeb muaj zog, xws li nruab nrab ntawm lub hmo mus rau kaj ntug ntawm lub teeb lub teeb; subway lub tsheb tawm hauv av mus rau ntawm ntug zos thaum lub tsheb teeb; Yog nyob rau hauv lub hnub tshav ntuj ze ntawm lub qhov rais ntawm lub chaw ua hauj lwm, cov tsev kawm ntawv, factories thiab lwm lub teeb hluav taws xob tseem tseem qhib muaj. Cov chaw no tsis paub ntau npaum li cas los txuag hluav taws txhua hnub! Nyob rau yav dhau los vim tias muaj kev kub nyhiab sodium teeb, lub teeb pom kev zoo, lub teeb tav su, cov roj teeb txuag hluav taws xob tsis tuaj yeem dim, tsuas tuaj yeem hnov ​​qab. Tam sim no hloov mus rau LED, koj muaj peev xwm dawb do dimmer, thiab cov zog yuav tau txais kev cawmdim. Yog li ntawd rau lub teeb kom tsis muaj zog, tsev neeg phab ntsa tsis tuaj yeem tsis yog daim ntawv thov tseem ceeb, lub khw tseem muaj tsawg heev. Tab sis yog lub teeb nraub av, chaw ua hauj lwm, khw malls, cov tsev kawm ntawv, cov khoom lag luam ntawm cov lag luam uas tsis muaj zog yog qhov tseem ceeb dua ntais, tsis yog lub khw loj heev, thiab kev txuag hluav taws xob ntau. Cov sij hawm no tsis xav tau kev ceev nrooj, tiam sis tsis siv neeg tsis tu ncua, tsis ntse.

Teeb dimming:

Feem ntau, txoj kev mus rau nruab nrab ntawm qhov tsaus ntuj tom qab tsis muaj kev siv, yog li kev xyaum ua haujlwm yog kom tua teeb ntawm tom qab 12 lossis ib nrab ntawm qhov ci ntsa iab. Tab sis feem ntau txoj kev ua tau zoo yog raws li kev khiav tsheb npav los tswj cov kev ci kev ci kev ci, thiab txawm tias coj tus cwj pwm ncaj ncees.

Thiab thiaj li yuav ncav tau qhov kev txawj ntse no, qhov tseeb, kuj yog qhov yooj yim heev. Tsuas yog lub cheeb tsam tsheb khiav qis txhim kho mus rau ib tus ntiv tes nkaus xwb, raws li tus caws pliaj PWM dimming teeb liab mus rau qhov chaw tsav tsheb tam sim no tuaj yeem tau tiav.

Cov duab tsis muaj teeb meem tsis muaj teeb meem:

Yuav kom tsis txhob muaj teeb pom kev zoo nyob rau hauv lub hnub ci, koj tuaj yeem siv lub teeb nrig-pib lub teeb ntsa teeb hluav taws xob teeb hluav taws xob (lossis lwm lub teeb teeb meem LED).

Cov nyhuv ntawm tus qauv ntawm lub teeb ci ntsa iab yog xav hnov ​​qhov nruab hnub nrig, thiab yog tias lub hnub ci tuaj zog, ces lub teeb liab PWM tau tso tawm rau tag nrho cov teeb nyob rau lub hnub (xws li lub teeb pom kev zoo), thiab lawv qhov ci ntsa iab. Lub dimming teeb liab generator tuaj yeem kho teeb ci ntau, ntev li thaum cov teeb uas niaj hnub tsav tam sim no nrog PWM dimming tswj interface. Kev ua haujlwm ntawm qhov kev ua tsis zoo no yog qhov siab tshaj li 92% lossis ntau dua. Thiab yog tsis muaj kev sib haum xeeb nrog ib qho ntawm cov phab ntsa thyristor. Qhov kev siv hluav taws xob txuag tsis siv no yog cov roj teeb hluav taws xob, lub teeb txuag txuag hluav taws xob, cov roj teeb siab, thiab cov roj tawm ntawm cov roj tawm tsis tuaj yeem ua tiav, tiam sis nws yog lub teeb ci zoo tshaj plaws.

Dimming tshuab:

Hnub no txoj kev lag luam LED, kuv yog qhov zoo tshaj plaws txog qhov kev siv technology ntawm ib ntus thiab LED tsav lub zog. LED driver fais fab mov tsuas yog rau kev sib nrauj ntawm LED teeb zog. Thiab lub sij hawm no peb nquag hais tias LED dimming technology. Tam sim no, LED dimming tshuab feem ntau muaj cov nram qab no hom:

1: SCR dimming Qhov kev txhim kho hauv cov thev naus laus zis hauv lub thev naus laus zis, vim hais tias lub teeb pom kev zoo rau lub hwj huam tsis sib haum, kev siv SCR chopping technology, ua tiav tau zoo dua, tab sis LED tsis yog cov tswv yim, los ntawm lub Tam sim no, tau tshaj thyristor dimming fais fab mov, feem ntau muaj tsawg heev, 80% tsis yooj yim kom ua tau, uas yog tsis yog los ntawm lub tswv yim tseem ceeb ntawm cov hluav taws xob txuag hluav taws xob, thiab ob qho tib si, nws yog qhov nyuaj ua kom tau qhov siab zog, dua, tsuas ua hauj lwm hauv ib zaug ntawm qhov input voltage , qhov kev siv tshuab dimming no yuav tuag vim yog lub extinction ntawm incandescent, tab sis vim tias kev lag luam siab nkag mus, yuav muaj ib lub sijhawm.

2: Tsis txhob siv qhov teeb meem uas tsis muaj lub cav ntiv taw tam sim no, kho qhov teeb meem tam sim no, kom lub hom phiaj ntawm dimming, qhov tshuab no zoo, tab sis qhov thaiv yog qhov tsis, thiab tsis pom zoo rau cov roj teeb thiab lwm yam teeb pom kev zoo, teeb ntau ntawm no txoj kev.

3: PWM dimming Txoj kev no zoo li kev tawm dag, thiab nrog txoj kev tsis sib haum ua ke kom muaj teeb meem feem ntau ntawm cov teeb rooj teeb. PWM cov neeg siv thiab cov qhua tuaj noj mov no kuj zoo siab heev.

4: chaw taws teeb tswj kev tswj cov chaw taws teeb tswj cov chaw taws teeb tswj hluav taws xob thiab cov chaw taws teeb wireless ob leeg, ua kom tau ntau txoj, tab sis tuaj yeem hloov cov xim kub, xim thiab lwm txoj kev uas tsis tuaj yeem ua kom tiav cov teeb meem, qee qhov qij Lub teeb siv qee txoj kev tsis sib haum.

5: Tshooj dimming Txoj kev siv qhov tsis zoo no siv cov kev hloov ntawm phab ntsa ntawm qhov kev hloov rau lub sijhawm rau lub sijhawm ua kom tiav qhov laj thawj ntawm qhov tsis zoo. Qhov zoo ntawm qhov txujci no yog tias tsis muaj qhov kev txuas ntxiv uas yuav tsum tau ua, raws li txoj kev txhim kho uas twb muaj lawm, Yuav ua tiav tsis tiav, thiab lwm yam, vim hais tias lub dimming nkaus los ntawm lub hwj huam hloov chip sab hauv kev tswj, tag nrho cov voltage ntau, ntawm kev ci ntsa iab, tuaj yeem ua haujlwm siab thiab siab zog, qhov tsis zoo yog ua ntej Teeb tsa kev ci ntom ntu kev hloov, tsis tuaj yeem ncav tsis tau, tsis muaj, xws li tsawg tus lej IC, thiab tus nqi txhim kho tam sim no tsis txaus siab, tab sis kuv xav tias nrog lub tshuab paub tab, IC manufacturers yuav ntau dua kev txhim kho hauv tsev, tus kheej xav tias qhov kev siv tshuab daus no, yuav dhau los ua lub ntsiab ntawm dimming tshuab.

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