Feem ntau cov tshuab LED siv hluav taws xob tsav tsheb los hloov AC mains voltage mus rau pem hauv ntej voltage DC (Direct Current). Qee cov chips LED tuaj yeem ua haujlwm ntawm AC, tab sis kev ua haujlwm DC feem ntau.
Qhov tam sim no xa mus rau LED chips nce exponentially nrog rau qhov siv voltage. Kev hloov me ntsis ntawm qhov hluav taws xob tuaj yeem ua rau muaj kev hloov pauv tam sim no. Yog li ntawd, tam sim no los ntawm LED yuav tsum tau tswj los ntawm ib qho chaw sab nraud xws li qhov chaw tam sim no kom tsis txhob muaj kev puas tsuaj. Txij li cov khoom siv hluav taws xob feem ntau yog cov khoom siv hluav taws xob tas li, LED fixtures yuav tsum suav nrog lub zog hloov hluav taws xob, lossis tsawg kawg yog qhov txwv tam sim no.
Installers thiab specifiers pairing ntau LED teeb pom kev zoo Cheebtsam yuav tsum to taub seb lub system yog "Constant Current" los yog "Constant Voltage". Qhov kev nkag siab no ua kom muaj kev sib raug zoo ntawm cov khoom siv hluav taws xob thiab LED array. LED fixtures nrog cov khoom sib xyaw ua ke twb coj qhov no mus rau hauv tus account.
