Vim lawv lub neej ntev thiab kev siv zog,LED vaj huam sib luagnquag siv. Cov neeg siv nquag nug txog seb cov vaj huam sib luag no puas muaj teeb pom kev zoo thaum lawv tsis siv. Peb yuav tsum tshawb xyuas cov txheej txheem sab hauv ntawm LED vaj huam sib luag, qhov muaj peev xwm ntawm cov teeb pom kev nyob sab hauv, thiab qhov tshwm sim ntawm cov emissions kom nkag siab txog qhov tshwm sim no.
Lub hauv paus ntsiab lus ntawm Kev Ua Haujlwm ntawm LED Vaj Huam Sib Luag LED (lub teeb-emitting diode) panels yog tsim los ntawm ob peb LED chips uas tsim lub teeb los ntawm hluav taws xob hluav taws xob. LED chips emit lub teeb thaum muaj hluav taws xob tam sim no dhau los ntawm lawv cov khoom siv semiconductor, ua kom cov electrons thiab ua rau lawv tso tawm photons. Raws li txoj cai, cov LEDs yuav tsum tsis txhob tso lub teeb thaum lub hwj chim kaw vim tias hluav taws xob yuav tsum tsis txhob ntws. Tab sis qhov no tsis yog ib txwm muaj nyob rau hauv kev xyaum. cov
Emission ntawm Lub Teeb Vim Capacitive Coupling
Capacitive coupling yog ib qho ntawm cov laj thawj tseem ceeb ntawmLED vaj huam sib luag' lub teeb emission thaum lawv tawm. Capacitors muaj peev xwm khaws cia thiab tso tawm hluav taws xob hauv hluav taws xob hauv hluav taws xob. Parasitic capacitance tuaj yeem muaj nyob rau hauv kev teeb tsa ntawm LED vaj huam sib luag ntawm cov kab hluav taws xob thiab cov tsav tsheb LED lossis cov LEDs lawv tus kheej. Lub charged capacitor maj mam ntws los ntawm LED Circuit Court thaum lub hwj chim raug kaw. Txawm hais tias tsis tshua muaj neeg tsawg, qhov seem tam sim no txaus los ua rau LEDs tsim lub teeb ci. Cov vaj huam sib luag nrog siab - lub zog LED chips lossis cov tshuab nrog cov kab sib txuas sib txuas thiab cov peev txheej muaj peev xwm nthuav tawm cov cwj pwm no kom meej meej.
Emission ntawm lub teeb tshwm sim los ntawm qhov txawv txav voltage
Qhov "stray voltage" phenomena yog lwm qhov laj thawj. Thaum lub tshuab hluav taws xob muaj cov xaim hluav taws xob, qhov hluav taws xob tsis zoo yuav tshwm sim. Piv txwv li, txawm tias thaum lub hwj chim hloov nyob rau hauv txoj hauj lwm tawm, ib qho me me ntawm cov hluav taws xob muaj peev xwm tseem tuaj yeem ncav cuag cov LEDs yog tias cov rwb thaiv tsev ntawm cov xov hlau txuas nrog LED vaj huam sib luag puas lossis yog tias muaj teeb meem nrog cov av tsis raug. Ib qho qis heev - theem tam sim no ntws los ntawm LEDs tuaj yeem tshwm sim los ntawm qhov tsis txaus ntseeg no, ua rau lub teeb pom kev tsis pom kev.
Qhov cuam tshuam ntawm Cov Khoom Siv Hluav Taws Xob
Hauv qee qhov xwm txheej, qhov teeb meem no kuj tseem tuaj yeem ua rau hnyav dua los ntawm kev siv lub zog hluav taws xob (PSU) rauLED vaj huam sib luagyog tsim. Tom qab lub hwj chim raug kaw lawm, lub zog tuav hauv lub capacitors yuav raug tso tawm los ntawm LED Circuit Court yog tias PSU tsis muaj qhov cuam tshuam zoo. Tsis tas li ntawd, thaum lub hwj chim raug muab tua, qee qhov dimmers lossis tswj circuits siv nrog LED vaj huam sib luag tuaj yeem pom tus cwj pwm coj txawv txawv. Qee qhov dimmers tsuas yog txo qhov hluav taws xob mus rau theem qis heev, uas tseem tuaj yeem ua rau LEDs tawm lub teeb pom kev, tsis yog txiav tawm tag nrho cov khoom siv hluav taws xob.
Cov teebmeem ntawm lub teeb emission tom qab tig tawm
Thaum LED cov vaj huam sib luag raug muab tua, lawv lub teeb ci feem ntau tsis txaus los teeb pom kev zoo hauv qhov chaw, tab sis nws tseem tuaj yeem ua rau muaj kev ntxhov siab, tshwj xeeb tshaj yog nyob rau hauv qhov tsaus ntuj nti. Cov neeg uas hnov mob me me ntawm lub teeb, piv txwv li, yuav pom tias qhov ci ci hauv chav pw nrog lub vaj huam sib luag LED rau qab nthab teeb cuam tshuam lawv txoj kev pw tsaug zog thaum lub teeb tawm. Technically hais lus, nws kuj yuav yog ib qho kev qhia txog teeb meem hluav taws xob nrog lub teeb pom kev zoo. Ntev- teeb meem hluav taws xob ntev lossis txawm tias muaj kev pheej hmoo ntawm kev nyab xeeb yuav tshwm sim yog tias lub teeb ci ntsa iab raug coj los ntawm cov xov hlau tawg lossis lub zog ua haujlwm tsis zoo.
Txoj hauv kev los daws qhov teeb meem ntawm lub teeb emission thaum tawm
Qhov teeb meem ntawm LED panels emitting lub teeb thaum muab tua tuaj yeem daws tau ntau txoj hauv kev. Xws li ib tug los ntshav resistor nyob rau hauv lub Circuit Court yuav pab tau nrog capacitive coupling teeb meem. Tom qab lub hwj chim tau raug kaw lawm, ib tug bleeder resistor sai sai tso lub capacitor, txwv tsis pub cov seem tam sim no los ntawm cov LEDs. Cov teeb meem tsis zoo ntawm qhov hluav taws xob tuaj yeem daws tau los ntawm kev ua kom cov cables raug insulated kom zoo thiab hauv av. Qhov teeb meem tuaj yeem txhim kho tau zoo los ntawm kev xaiv lub siab - lub zog hluav taws xob zoo nrog lub tshuab tso tawm kom zoo. Yog tias lub dimmer yog lub hauv paus ntawm qhov teeb meem, nws tuaj yeem kho tau los ntawm kev sib pauv nws tawm rau ib qho uas, thaum nyob hauv txoj hauj lwm tawm, tuaj yeem txiav tawm tag nrho cov khoom siv hluav taws xob rau LEDs.
LED vaj huam sib luag yuav tsum tsis txhob tso lub teeb thaum lawv tawm, tab sis nyob rau hauv tej lub sij hawm, lawv tej zaum yuav vim muaj ib tug xov tooj ntawm cov hluav taws xob sib txawv. Rau lub teeb pom kev zoo kom ua haujlwm zoo thiab rau cov neeg siv kev paub zoo, nws yog ib qho tseem ceeb kom nkag siab txog qhov tshwm sim ntawm qhov tshwm sim no. Cov neeg siv yuav lav tias lawvLED vaj huam sib luagua haujlwm raws li tau npaj tseg thiab tiv thaiv kom tsis txhob muaj lub teeb emissions thaum tsis siv los ntawm kev ua cov kauj ruam tsim nyog los daws cov teeb meem no.
