LED yog dab tsi?
LED stands rau "Lub teeb Emitting Diode." Nws yog ib qho khoom siv semiconductor uas tawm lub teeb thaum muaj hluav taws xob dhau los ntawm nws. LEDs yog siv nyob rau hauv ntau yam kev siv, xws li teeb pom kev zoo, qhia, ntsuas, thiab lwm yam. Lawv paub txog lawv lub zog efficiency, durability, thiab ntev lifespan piv rau cov tsoos incandescent los yog fluorescent qhov muag teev. LEDs tuaj yeem ua ntau yam xim thiab tuaj yeem siv rau hauv ntau hom khoom, los ntawm cov teeb pom kev yooj yim mus rau cov khoom siv hluav taws xob thiab cov teeb pom kev zoo.
Lub hauv paus ntsiab lus ntawm LED teeb pom kev zoo
Thaum cov electrons thiab qhov nyob rau hauv lub PN hlws ris ntawm lub teeb-emitting diode recombine, cov electrons hloov los ntawm ib tug siab zog theem mus rau ib tug tsawg zog, thiab cov electrons tso tawm ntau zog nyob rau hauv daim ntawv ntawm emitted photons (electromagnetic tsis), uas ua rau cov electrons thiab qhov nyob rau hauv lub PN hlws ris ntawm lub teeb-emitting diode recombine. electroluminescence. Cov xim ntawm lub ci muaj feem xyuam nrog cov khoom siv uas ua rau nws lub hauv paus. Cov ntsiab lus tseem ceeb xws li gallium arsenide diode emits liab lub teeb, gallium phosphide diode emits ntsuab teeb, silicon carbide diode emits daj lub teeb, thiab gallium nitride diode emits xiav lub teeb.
Lub teeb qhov chaw sib piv
LED: siab electro-optical conversion efficiency (ze li 60%), ntsuab thiab ib puag ncig tus phooj ywg, lub neej ntev (txog 100,000 teev), tsis tshua muaj kev khiav hauj lwm voltage (kwv yees li 3V), tsis muaj kev poob ntawm lub neej tom qab hloov dua, me me, tsawg tshav kub tiam , siab brightness, muaj zog thiab ruaj khov, Yooj yim rau dim, ntau yam xim, concentrated thiab ruaj khov beam, tsis ncua kev pib.
Incandescent teeb: qis electro-optical conversion efficiency (kwv yees li 10%), lub neej luv luv (kwv yees li 1000 teev), kub kub kub, ib xim thiab tsis tshua muaj xim kub.
Fluorescent teeb: qis electro-optical conversion efficiency (kwv yees li 30%), teeb meem rau ib puag ncig (muaj cov teeb meem xws li mercury, li 3.5-5mg / unit), tsis-kho brightness (tsawg voltage tsis tuaj yeem teeb), ultraviolet hluav taws xob, Flickering tshwm sim, qeeb pib qeeb qeeb, tus nqi ntawm cov khoom siv tsis tshua muaj hauv ntiaj teb nce ntxiv, rov ua dua tshiab cuam tshuam rau lub neej, thiab qhov ntim yog loj.High-pressure gas paug teeb: haus ntau lub zog, tsis zoo siv, muaj luv luv. lifespan, thiab muaj teeb meem kub dissipation. Lawv feem ntau yog siv rau sab nraum zoov teeb pom kev zoo.
Qhov zoo ntawm LED
LED yog ib tug me me nti encapsulated nyob rau hauv epoxy resin, yog li nws yog me me thiab hnyav. Feem ntau hais lus, lub zog ua haujlwm ntawm LED yog 2-3.6V, kev ua haujlwm tam sim no yog 0.02-0.03A, thiab kev siv hluav taws xob feem ntau tsis ntau dua.
0.1 wb. Nyob rau hauv qhov ruaj khov thiab tsim nyog voltage thiab kev ua haujlwm tam sim no, kev pabcuam lub neej ntawm LEDs tuaj yeem ntev li 100,000 teev.
LED siv cov tshuab luminescence txias, uas ua kom muaj cua sov tsawg dua li cov teeb pom kev zoo tib yam ntawm tib lub zog. LEDs yog tsim los ntawm cov khoom tsis muaj tshuaj lom, tsis zoo li cov teeb fluorescent uas muaj mercury, uas tuaj yeem ua rau muaj kuab paug. Nyob rau tib lub sijhawm, LEDs kuj tuaj yeem siv thiab rov siv dua.
Kev siv ntawm LED
Raws li LED thev naus laus zis tseem paub tab thiab txhim kho sai, ntau thiab ntau daim ntawv thov LED tshwm sim hauv peb lub neej txhua hnub. LEDs yog dav siv nyob rau hauv LED zaub, tsheb teeb, tsheb teeb, teeb pom kev zoo, teeb pom kev zoo kho kom zoo nkauj, LCD npo backlights, thiab lwm yam.
Kev tsim kho ntawm LED
LED yog lub teeb-emitting nti, bracket thiab xov hlau encapsulated nyob rau hauv epoxy resin. Nws yog lub teeb, tsis muaj tshuaj lom thiab muaj kev poob siab zoo. LED muaj ib txoj kev conduction yam ntxwv, thiab thaum rov qab voltage siab dhau lawm, nws yuav ua rau tawg ntawm LED. Lub ntsiab muaj pes tsawg leeg yog qhia nyob rau hauv daim duab:
Post lub sij hawm: Oct-30-2023
