Yog vim li cas LED teeb thiaj li muaj zog-Nyob zoo?

Lub teeb Emitting Diode lossis LED yog ib hom PN hlws ris diode. Nws yog tsim los ntawm cov khoom siv semiconductor uas tsim lub teeb thaum tam sim no ntws los ntawm nws. Nws ua haujlwm ntawm lub hauv paus ntsiab lus ntawm electroluminescence thiab siv rau peb hnub - mus rau - hnub teeb pom kev zoo.

Koj muaj peev xwm pom qhov muaj koob meej ntawm LED teeb thiab qhov muag teev nyob rau hauv kaum xyoo dhau los los yog li ntawd. Feem ntau ntawm peb cov kev xav tau teeb pom kev zoo tau ua tiav los ntawm LEDs hnub no, hloov qhov muag teev thiab txawm tias CFLs (Compact Fluorescent Lamps). LEDs tau sau npe tias muaj zog heev -ntau thiab ntev- kav ntev, tab sis dab tsi yog vim li cas tom qab lawv cov superiority?

Cia peb tshawb nrhiav ntau ntxiv txog kev tshawb fawb tom qab cov teeb LED no thiab ua rau peb lub neej ci ntsa iab me ntsis.

LED teebyog ua los ntawm lub teeb me me -emitting diodes uas zoo li tus neeg yuav tsum tau muaj. Yuav kom nkag siab tias LED teeb ua haujlwm li cas, peb yuav tsum nkag mus rau cov ntsiab lus ntawm LED ua haujlwm li cas hauv thawj qhov chaw.

LED yog tsim los ntawm cov khoom siv semiconductor nyob rau hauv daim ntawv ntawm PN junction diode. Nws emits lub teeb nyob rau hauv pem hauv ntej bias (siab dua voltage yog siv rau lub P- kawg ntawm lub diode tshaj N- kawg ntawm lub diode) thiab tam sim no ntws los ntawm P mus rau N. Nyob rau hauv pem hauv ntej bias, thaum lub qhov los ntawm p- hom cheeb tsam nkag mus rau hauv hlws ris thiab recombine nrog cov electrons los ntawm n- lub zog ntawm lub teeb nyob rau hauv daim ntawv ntawm lub teeb nyob rau hauv lub cheeb tsam ntawm lub teeb. Cov photons no tawm lub teeb.

Cov tshuaj sib txawv doping tau ntxiv rau LED kom tawm cov xim sib txawv ntawm lub teeb. Piv txwv li, Aluminium yog ntxiv rau Gallium Arsenide diode rau emission ntawm pom lub teeb liab.

Yog li ntawd, lub teeb LED ua haujlwm ntawm lub hauv paus ntsiab lus ntawm electroluminescence los tsim lub teeb. Lub ntsiab lus tseem ceeb ntawm no yog tias LED khiav ntawm Direct Current (DC), tab sis cov khoom siv hluav taws xob hauv tsev neeg hauv tsev yog nyob rau hauv daim ntawv ntawm Alternating Current (AC). Yog li ntawd, muaj ib tug ua tau - nyob rau hauv voltage tsav tsheb nyob rau hauv lub hauv paus ntawm LED teeb uas converts 120-240 V AC tam sim no rau 30-60V DC tam sim no rau kev ua haujlwm zoo.

Lub ntiaj teb tau hloov pauv thiab thev naus laus zis tau hloov zuj zus. Kev nqhis dej rau txoj kev ua neej zoo dua tau ua rau muaj kev tsim tshwj xeeb thiab kev tshawb pom, LEDs yog ib qho ntawm lawv.

LED teeb pom kev zoo yog qhov txawv ntawm lwm hom teeb pom kev zoo, xws li incandescent thiab CFL, vim muaj ntau yam zoo uas nws muaj tshaj lawv.

LEDs tsis tshua muaj me me thiab tuaj yeem tawm ntau yam xim. Nws yog ib qho yooj yim los tsim cov xim sib txawv ntawm LEDs, yog li lawv tau siv dav hauv kev kho kom zoo nkauj thiab khoom siv hluav taws xob.

LEDs tso lub teeb nyob rau hauv ib qho kev taw qhia, uas txo qhov kev xav tau ntawm cov reflectors thiab diffusers uas yuav ua rau lub teeb poob. Cov yam ntxwv no ua rau LEDs yog qhov kev xaiv zoo tshaj plaws rau cov teeb pom kev zoo thiab ua haujlwm teeb pom kev zoo.

LEDs tso tawm lub zog hluav taws xob tsis zoo, vim tias feem ntau ntawm lub zog raug tso tawm hauv lub teeb. Tsis zoo li cov qij incandescent, uas emit 90% ntawm lawv lub zog raws li cua sov, thiab CFLs, uas emit 80% ntawm lawv lub zog raws li cua sov.

LED qhov muag teevkav ntev dua li lwm lub qhov muag teev vim tias lawv tsis muaj qhov chaw uas kub hnyiab zoo li filament lossis tawg dhau sijhawm. LEDs tuaj yeem kav ntev txog 25,000 teev-yuav luag peb xyoos ntawm kev siv tas li.

LED teeb siv li 75% tsawg zog dua li cov qauv teeb pom kev zoo.

LEDs yog lawv tus kheej lub hauv paus ntawm photons. Lawv tsim photons (lub teeb particles) thaum tam sim no dhau los ntawm lawv. Lawv tsis muaj filaments lossis cov ntaub ntawv uas yuav tsum tau hlawv kom tsim lub teeb. Kwv yees li 30-40% ntawm cov khoom siv hluav taws xob yog emissions li lub teeb, thaum tus so yog poob li cua sov. LEDs yog wildly zog npaum vim hais tias lub nkim lub zog yog khaws cia kom tsawg kawg nkaus.

Nyob rau hauv qhov muag teev, cov khoom siv filament yuav tsum tau rhuab los ntawm qhov ntws ntawm tam sim no kom txog thaum nws ci, uas ces emits lub teeb. Hauv cov txheej txheem no, kwv yees li 90% ntawm cov khoom siv hluav taws xob tau ploj vim yog hluav taws xob hluav taws xob thiab tsuas yog 10% tawm raws li lub teeb.

Hauv CFLs, ntawm qhov tod tes, qhov tam sim no tau dhau los ntawm lub raj uas muaj argon thiab mercury vapor thiab qhov kev ua no tsim lub teeb lub zog. Txawm li cas los xij, ib zaug ntxiv, tsuas yog 20% ntawm cov khoom siv hluav taws xob tsim teeb pom kev zoo, vim qhov poob tseem ceeb hauv daim ntawv ntawm lub zog hluav taws xob.

LED teeb xa ntau lumens (qhov ntau ntawm cov teeb pom kev zoo) ib watt dua li cov incandescents. Lawv muaj qhov ua tau zoo luminous ntau dua . 60-watt incandescent qhov muag teev tuaj yeem tsim muaj txog li 900 lumens, qhovLED teebsiv tsuas yog 6-8 watts rau tib lub luminosity.

LED teeb muaj peev xwm hloov cov teeb pom kev zoo ntawm lub ntiaj teb tag nrho nyob rau yav tom ntej. Lawv kuj tau siv dav hauv electronics thiab gadgets xws li LED TV, saib thiab cov ntxaij vab tshaus mobile.

Ntev- kav ntev, nyiaj- txuag, thiab siv tau zoo heev, LED teeb yog lub zog- ntim. Lawv tsim nyog sim thiab yuav ua kom pom koj lub ntiaj teb!