Muaj 3 txoj hauv kev ua kom pom kev rau coj cov raj fluorescent
Lub dimmer rau lub teeb pom kev zoo ua haujlwm ntawm LED teeb pom kev zoo yog tam sim no tseem ceeb heev hauv LED teeb pom kev zoo, thiab nws tseem yog qhov txuas uas yuav tsum tau them nyiaj mloog rau tam sim no, xws li ED cov khoom siv thiab cov ntxaij vab tshaus.
Cov hauv qab no yuav qhia qhov xwm txheej cuam tshuam ntawm LED raj dimming.
Hom 1: Pulse Width Modulation (PWM). Tom qab hloov kho, kev tsav tsheb tam sim no yog nyob rau hauv ib puag ncig cov duab zoo nrog qhov sib txawv ntawm qhov dav dav. Qhov dav mem tes tau hloov pauv los hloov kho lub sijhawm teeb pom kev txuas ntxiv ntawm LED raj, thiab lub zog tawm tswv yim kuj tau hloov pauv tib lub sijhawm, thiaj li ua tiav lub hom phiaj ntawm kev txuag hluav taws xob thiab dimming. Qhov zaus yog li 200Hz ~ 10KHz raws li ib txwm muaj; vim yog hysteresis ntawm tib neeg lub zeem muag, lub teeb pom kev yuav tsis hnov qhov tshwm sim ci ntsa iab uas tau ua hauv cov txheej txheem dimming. Nws tuaj yeem txhim kho kev ua kom sov cua sov ntawm LED. Qhov tsis zoo yog qhov kev hla dhau ntawm kev tsav tsheb tam sim no yuav muaj feem cuam tshuam rau lub neej ntawm LED nti.
Hom 2: Dimming ntawm lub raj LED tau ua tiav los ntawm kev hloov pauv LED tsav tam sim no. Txij li qhov ci ntawm LED nti yog qhov sib npaug rau LED tsav tam sim no, peb tuaj yeem tswj qhov ci ntawm LED raj los ntawm kev kho LED tsav tam sim no.
Hom thib peb: ua raws txoj kev ua kom pom kev dim lossis txoj hauv kev dim dim Thaum kev tsav tsheb tam sim no nce lossis txo qis, qhov cuam tshuam rau lub neej ntawm LED nti thaum lub sijhawm dhau ntawm kev tsav tsheb tam sim no tau raug txo qis, thiab cov hluav taws xob dimming muaj zog tiv thaiv kev cuam tshuam. Qhov tsis zoo yog qhov txheej txheem hloov pauv ntawm kev tsav tam sim no yuav tsum muaj kev cuam tshuam rau xim kub ntawm LED nti.
