LED Driver Internal Structure Overview
LED tsav tsheb yog lub hauv paus tseem ceeb rau kev ua haujlwm ib txwm muaj ntawm LED teeb. Nws lub luag haujlwm tseem ceeb yog hloov AC lossis DC lub zog rau hauv DC lub zog ruaj khov haum rau kev ua haujlwm LED. Kev tsim qauv zoo thiab kev ua haujlwm ntawm tus neeg tsav tsheb ncaj qha cuam tshuam rau kev ruaj ntseg, kev ua haujlwm, thiab kev ua neej nyob ntawm LED teeb. Yog li ntawd, kev nkag siab txog cov khoom siv sab hauv ntawm LED tsav tsheb yog qhov tseem ceeb rau kev xaiv cov khoom siv teeb pom kev zoo LED.
LED tsav tsheb feem ntau muaj cov hauv qab no tseem ceeb:
- Input Circuit: Lub luag haujlwm rau kev ua haujlwm AC lossis DC lub zog los ntawm lub hauv paus, ua qhov kev txhim kho ua ntej thiab lim dej kom ntseeg tau tias kev ua haujlwm ib txwm muaj ntawm cov khoom txuas ntxiv tom ntej.
- Conversion Circuit Court: Hloov lub zog ua tiav los ntawm cov khoom siv hluav taws xob rau hauv DC lub zog ruaj khov. Thaum lub sij hawm tus txheej txheem no, tus neeg tsav tsheb kho qhov tso zis voltage thiab tam sim no raws li LED qhov xav tau los xyuas kom meej LED teeb pom kev ruaj khov.
- Tswj Circuit Court: Saib xyuas thiab tswj cov kev khiav hauj lwm ntawm lub hloov hluav taws xob hloov hluav taws xob, kom ntseeg tau tias cov zis hluav taws xob thiab qhov tam sim no nyob hauv qhov teeb tsa. Lub Circuit Court tswj kuj tseem muaj tshaj - kub, tshaj -voltage, thiab tshaj - tiv thaiv tam sim no ua haujlwm los txhim kho kev nyab xeeb ntawm tag nrho cov kab ke.
- Output Circuit: Muab DC lub zog ruaj khov rau cov chips LED, ua kom cov LEDs tawm lub teeb ib txwm. Kev tsim hluav taws xob tsim hluav taws xob yuav tsum xav txog yam xws li cov koob thiab kev sib txuas ntawm cov LEDs thiab cov cua sov dissipation kom ntseeg tau tias kev ruaj ntseg thiab kev ua haujlwm ntawm LED teeb.
Fais fab mov thiab LED tsav tsheb
Lub zog hluav taws xob yog lub zog hluav taws xob rau LED tsav tsheb, feem ntau AC mains lossis lwm hom fais fab. Thaum xaiv cov khoom siv hluav taws xob, nws cov zis voltage, tam sim no, lub zog, thiab kev ruaj ntseg yuav tsum tau txiav txim siab kom muaj kev sib tw zoo nrog LED tsav tsheb.
Tus neeg tsav tsheb LED kho thiab kho nws tus kheej raws li cov yam ntxwv ntawm cov khoom siv hluav taws xob kom ua tiav cov txiaj ntsig zoo tshaj plaws. Piv txwv li, thaum AC mains voltage fluctuates, LED tsav tsheb tuaj yeem hloov kho nws cov zis voltage thiab tam sim no los ntawm nws cov kev tswj xyuas hauv Circuit Court kom ruaj khov LED teeb pom kev zoo.
Tsis tas li ntawd, nrog kev txhim kho thev naus laus zis thiab kev hloov pauv kev lag luam xav tau, cov tsav tsheb niaj hnub LED muaj ntau txoj haujlwm ntxiv, xws li dimming, tswj chaw taws teeb, thiab kev siv hluav taws xob. Kev ua tiav ntawm cov haujlwm no yog nyob ntawm kev sib koom tes zoo ntawm cov khoom siv hluav taws xob thiab LED tsav tsheb.
Hauv cov ntsiab lus, kev nkag siab txog cov khoom siv sab hauv ntawm tus tsav tsheb LED thiab kev sib raug zoo ntawm cov khoom siv hluav taws xob thiab LED tsav tsheb yog qhov tseem ceeb rau kev xaiv cov khoom siv teeb pom kev zoo LED thiab ua kom lawv txoj haujlwm ruaj khov. Thaum xaiv thiab siv cov khoom siv teeb pom kev zoo LED, peb yuav tsum tsom mus rau qhov ua tau zoo thiab kev ua haujlwm zoo ntawm tus neeg tsav tsheb kom ntseeg tau tias cov teeb pom kev zoo thiab cov neeg siv kev paub dhau los.
