Vim li cas LED teeb tsis Bright txaus tom qab ib lub sij hawm ntawm lub sij hawm?
Ua ntej tshaj plaws, yog lub hwj chim muab roj teeb, thov saib yog tias lub roj teeb tseem muaj hluav taws xob.
Yog hais tias nws yog ib qho hluav taws xob sab nraud, tej zaum lub teeb nrig, feem ntau yog txiav txim siab los ntawm cov LED nti.
Lub teeb nrig: Lub teeb meem ntawm lub teeb pom kev ntawm lub teeb hluav taws xob tom qab nws tau siv rau ib lub sijhawm. Feem ntau, qhov chaw tsim hluav taws xob ua kom pom qhov LED ua ntej thiab tom qab teeb pom kev zoo nrog 20MA ncaj qha tam sim no rau 1000 teev nyob rau hauv kev sim (qhov sov sov ntawm 25 degrees Celsius).
Vim li cas rau lub teeb nrig
Ua ntej, qhov zoo tshaj ntawm LED khoom lawv tus kheej:
1. Lub LED chips siv tsis zoo, qhov ci ntsa iab attenuation yog ceev ceev.
2. Muaj teeb meem nyob rau hauv cov txheej txheem ntau lawm. Tshav kub kub ntawm LED chip tsis tuaj yeem muab tau los ntawm tus taw ntawm tus pin, uas ua rau kub siab ntawm LED nti thiab ua kom lub dag zog ntawm tus nti.
Qhov thib ob, kev siv ntawm kev siv:
1. Lub LED yog tsav los ntawm tas mus li. Ib txhia ntawm cov LEDs yog tsav los ntawm voltage, uas ua rau lub LED attenuate.
2. Tsav tsheb tam sim no loj zog dua cov tsav tsheb nyob hauv kev tsav tsheb.
Qhov tseeb, muaj ntau ntau yam ua rau lub teeb pom kev zoo ntawm cov khoom siv ntawm cov khoom siv LED, qhov tseem ceeb tshaj plaws yog qhov teeb meem thermal. Txawm hais tias ntau lub khw tsis xyuam xim kom sov dissipation nyob rau hauv cov khoom muag, lub teeb ntawm cov theem ntawm cov khoom muag LED yuav siab dua li cov khoom ntawm LED uas them sai sai rau cua sov dissipation rau ib lub sij hawm ntev. Lub thermal ua haujlwm ntawm cov roj chip nws tus kheej, tus cawv ntawm cov kua nplaum, cov cua kub nyhuv ntawm cov substrate, zoo li lub colloid thiab kub hlau kuj tseem ceeb rau lub teeb nrig.
