Common LED fais fab mov

Muaj ntau hom LED fais fab mov.Qhov zoo thiab tus nqi ntawm ntau yam khoom siv fais fab sib txawv heev.Qhov no kuj yog ib qho tseem ceeb cuam tshuam rau cov khoom zoo thiab tus nqi.LED fais fab mov feem ntau yuav muab faib ua peb pawg, hloov qhov tam sim no qhov chaw, tawm IC fais fab mov, thiab tsis kam-capacitance kauj ruam-down fais fab mov.

 

1. Lub switching tas li tam sim no qhov chaw siv ib tug transformer los hloov lub high voltage mus rau tsawg voltage, thiab ua rectification thiab filtering kom tso tawm ib tug ruaj khov uas tsis muaj voltage direct tam sim no.Qhov hloov pauv tsis tu ncua tam sim no tau muab faib ua cov khoom siv hluav taws xob sib cais thiab cov khoom siv hluav taws xob tsis sib cais.Kev rho tawm yog hais txog kev sib cais ntawm cov zis siab thiab tsis tshua muaj hluav taws xob, thiab kev nyab xeeb yog siab heev, yog li qhov yuav tsum tau ua rau lub rwb thaiv tsev ntawm lub plhaub tsis siab.Kev nyab xeeb tsis nyob ib leeg yog me ntsis zuj zus, tab sis tus nqi kuj tsawg.Ib txwm siv lub zog txuag hluav taws xob siv cov khoom siv hluav taws xob tsis sib cais thiab siv lub plhaub yas insulated los tiv thaiv.Kev nyab xeeb ntawm cov khoom siv hluav taws xob hloov pauv yog qhov siab (feem ntau cov zis yog qhov tsis tshua muaj hluav taws xob), thiab kev ua haujlwm ruaj khov.Qhov tsis zoo yog tias lub voj voog yog qhov nyuaj thiab tus nqi siab.Lub zog hloov hluav taws xob muaj cov cuab yeej paub tab thiab kev ua haujlwm ruaj khov, thiab tam sim no yog lub hauv paus fais fab mov rau LED teeb pom kev zoo.

2. Linear IC fais fab mov siv ib qho IC lossis ntau ICs los faib hluav taws xob.Muaj ob peb hom khoom siv hluav taws xob, qhov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob muaj zog heev, tsis xav tau electrolytic capacitor, lub neej ntev thiab tus nqi qis.Qhov tsis zoo yog tias qhov tso zis hluav taws xob siab tsis raug cais tawm, thiab muaj stroboscopic, thiab lub kaw lus yuav tsum tau tiv thaiv hluav taws xob poob siab.Txhua tus siv cov khoom siv hluav taws xob IC hauv kev lag luam thov tias tsis muaj cov khoom siv hluav taws xob electrolytic thiab lub neej ntev ntev.IC fais fab mov muaj kev ntseeg siab, kev ua haujlwm siab thiab tus nqi qis, thiab yog qhov zoo tshaj plaws LED fais fab mov yav tom ntej.

3. Lub RC kauj ruam-down fais fab mov siv lub capacitor los muab kev tsav tsheb tam sim no los ntawm nws cov nqi them thiab tawm.Lub voj voog yog yooj yim, tus nqi qis, tab sis kev ua haujlwm tsis zoo, thiab kev ruaj ntseg tsis zoo.Nws yog ib qho yooj yim heev rau hlawv tawm lub LED thaum daim phiaj voltage fluctuates, thiab cov zis yog high-voltage tsis cais.Insulating tiv thaiv plhaub.Tsis tshua muaj hluav taws xob zoo thiab lub neej luv luv, feem ntau tsuas yog tsim rau cov khoom siv hluav taws xob qis (hauv 5W).Rau cov khoom uas muaj lub hwj chim siab, cov zis tam sim no loj, thiab lub capacitor tsis tuaj yeem muab tam sim no loj, txwv tsis pub nws yog qhov yooj yim rau hlawv.Tsis tas li ntawd, lub teb chaws muaj cov kev xav tau rau lub zog ntawm lub teeb hluav taws xob siab, uas yog, lub zog hluav taws xob siab tshaj 7W yuav tsum muaj ntau dua 0.7, tab sis qhov kev tiv thaiv-capacitance kauj ruam-down fais fab mov yog deb ntawm kev ncav cuag (feem ntau ntawm 0.2-0.3), yog li cov khoom siv hluav taws xob siab yuav tsum tsis txhob siv RC kauj ruam-down fais fab mov.Hauv kev ua lag luam, yuav luag tag nrho cov khoom siv qis kawg uas tsis tshua muaj siv RC cov khoom siv hluav taws xob qis qis, thiab qee cov khoom siv hluav taws xob qis qis kuj tseem siv RC cov khoom siv hluav taws xob qis.


Post lub sij hawm: Aug-06-2021
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