Kev soj ntsuam ntawm AC-dawb LED's Constant Current Control Technology Analysis

AC-dawb LED ua tsis tau tejyam kom zam qhov tseem ceeb tsis tu ncua tam sim no tswj technology tsom xam 1. AC-dawb LED tsis yog qhov tseem ceeb hloov pauv ntawm lub cuab yeej. Hauv lwm lo lus, yeej tsis muaj LED nti uas tsis muaj kev ua haujlwm ntawm AC Electric Farm. AC-dawb LED uas tam sim no muaj yog ib qho khoom tshwj xeeb uas tau teem rau hauv lub chipset sab hauv. Nws tsuas yog kev hloov pauv hauv cov qauv sab hauv ntawm lub cuab yeej LED. Tau kawg Cov qib ntawm cov khoom siv tes ua tsis yooj yim. Kev taw qhia ntawm AC-dawb LED yog feem ntau hais cov ntaub ntawv luam tawm los ntawm Seoul Semiconductor. Nws tuaj yeem pom tau tias nws yog ib txwm siv hluav taws xob rectifier choj Circuit Court los daws qhov teeb meem ntawm kev sib txuas lus ntawm qhov thiaj li hu ua DC LED fais fab mov teeb meem. Nws zoo nkaus li tias qhov txiaj ntsig yog qhov rectifier diode raug tshem tawm, tab sis qhov rov qab ua haujlwm ntawm LED yog txwv. Thaum daim phiaj nyob rau hauv lub ncov loj, nws tsis tas yuav muaj txiaj ntsig. Vim tias nws yog ib qho kev coj ua ntawm tus choj rectifier Circuit Court, tsuas yog ib nrab ntawm cov tam sim no ntws ntawm plaub choj caj npab, thiab DC load ntws los ntawm tag nrho cov tam sim no, ua rau tam sim no faib ntawm cov upload ntawm LEDs hauv txhua pab pawg. Thiab lub teeb emitting efficiency, xws li overcurrent ua rau lub teeb lwj thiab cuam tshuam rau lub neej. Tsis tas li ntawd xwb. Tsuas yog luv luv-circuit lub DC LED raug tshem tawm. Ua tib zoo saib ntawm lub voj voog, thiab tam sim no nws tau dhau los ua qhov zoo thiab rov qab LEDs hauv txhua pawg. Qhov tseeb, koj tsis tas yuav nyuaj heev thaum xub thawj. 2. AC-dawb LED tsis zam qhov tseem ceeb ntawm kev tswj xyuas tam sim no. Los ntawm cov kev taw qhia, lub teeb nyhuv ntawm AC LED tsis siab txaus tshaj li ib txwm LED. Nws tau hais tias yog theem kev txhim kho. Tus sau ntseeg hais tias lub hauv paus ntawm zoo sib xws LED chips nws tus kheej yog tib yam. Qhov tseem ceeb tshaj plaws los txwv cov teeb pom kev ntawm ib lub pobzeb yog hom Circuit Court ntawm tus choj rectifier. Xav txog tias tsuas yog ib pawg ntawm LEDs tuaj yeem ua haujlwm ib txwm ua, muab kev ua si tag nrho rau lub teeb pom kev zoo, thiab 80% ntawm plaub pawg ntxiv ua haujlwm hauv lub xeev underwriting nrog cov teebmeem tsis zoo. Tsis muaj teeb meem li cas los txhim kho nrog nws, nws yog ib txwm qis dua qhov zoo tib yam LED lub luminous efficiency. Txoj kev txhim kho yog tso tseg txoj kev tsis tsim nyog rectification. Tsis muaj kev tiv thaiv tam sim no ua haujlwm hauv AC-dawb LED. Thaum siv, nws yuav tsum tau txuas nrog kev khiav hauj lwm. Txawm li cas los xij, thaum lub sijhawm tam sim no ntawm qhov txwv ntawm lub zog hluav taws xob hluav taws xob tsawg, nws yog ib qho tsim nyog yuav tsum tau ua haujlwm hauv lub teeb pom kev tsis zoo ntawm lub hauv paus tam sim no thaum lub cev muaj zog lossis tsis tshua muaj hluav taws xob. Qhov kev txwv tsis pub dhau yog txoj kev tiv thaiv tsis zoo. Nws tsis tsuas yog muaj qhov tsis xws luag, tab sis kuj tso siab rau kev siv hluav taws xob ua haujlwm, kom txo qis kev siv hluav taws xob. Yog tias koj xav ntxiv PTC los daws qhov teeb meem tam sim no ntawm LED, koj tsis paub txaus txog kev ua haujlwm ntawm cov khoom siv. PTC feem ntau yog siv los tiv thaiv overcurrent thiab thermal tiv thaiv. Thaum qhov tam sim no nyob rau hauv Circuit Court loj dhau lawm, thaum PTC ncav cuag qhov kub ntawm qhov chaw nyob tom qab cua sov, tus nqi kuj nce sharply mus rau lub disconnection. Kev tshem tawm Circuit Court nyob rau hauv cov xim TV siv nws los tsim ib tug loj tam sim no attenuation vapor. Demagnetic. Thaum PTC resistor cuam tshuam los ntawm cov cua sov nyob ib puag ncig, qhov kub yuav qhib thaum qhov kub thiab txias dhau los ntawm qhov chaw nyob, uas tuaj yeem ua lub luag haujlwm hauv kev hloov kev tiv thaiv thermal. Yog tias koj xav tso siab rau qhov zoo ntawm qhov kub thiab txias coefficient ntawm PTC tsis kam rau LED qhov kev tiv thaiv tam sim no: Ua ntej, PTC tsis kam dhau qhov tam sim no, muaj cov txheej txheem cua sov kom sov. Tam sim no twb puas lawm LED. Qhov thib ob, qhov kub ntawm qhov kub ntawm PTC resistor tuaj yeem tswj tau qhov tam sim no tsis tu ncua. Tom qab ntawd qhov cuam tshuam ntawm qhov kub thiab txias ib puag ncig tuaj yeem hloov ntau ntau degrees kom qhov "kwv dej tas li" hloov tsis muaj nuj nqis. Puas yog nws muaj peev xwm hais tias cov khoom siv LED ntau kuj tuaj yeem yooj yim kom ntws ntawm qhov tam sim no yooj yim tam sim no? Hmoov tsis zoo. Thiab feem ntau kev sib txuas lus tsis tu ncua yog teeb meem ntau dua li DC qhov tam sim no. Qhov tseeb, muaj peev xwm muaj txhua yam khoom zoo siab txhawb nqa. Hloov chaw ntawm lub zog, LED cov tuam txhab yuav muaj zog dua nyob rau hauv cov nqe lus ntawm kev siv tshuab hluav taws xob, thiab nws yog qhov zoo dua los tsom rau kev tsim cov khoom siv hluav taws xob qis thiab siab-teeb LED teeb pom kev zoo.