YHID vs LED
Teeb pom kev nyob ib puag ncig hmo ntuj ib txwm yog qhov nyuaj rau tib neeg. Tau ntau txhiab xyoo hluav taws tau siv los ua kom pom kev hmo ntuj ntawm cov txiv neej, tab sis nrog kev lag luam kiv puag ncig cov khoom siv hluav taws xob tshiab tau ua haujlwm, thiab hluav taws xob yog nyob rau pem hauv ntej. Hloov lub zog hluav taws xob rau hauv lub teeb yog thawj zaug daws teeb meem los ntawm tus neeg tsim khoom Thomas Alva Edison, uas tau tsim lub qhov muag teeb. Tom qab cov txheej txheem tshiab tau pom los hloov hluav taws xob, thiab cov khoom siv ua haujlwm no hu ua lub teeb hluav taws xob. HID thiab LED yog ob hom hluav taws xob teeb.
HID stands rau High Intensity Discharge thiab LED stands rau lub teeb Emitting Diode. Ob qho tib si yog qhov nrov teeb pom kev zoo tau siv dav hauv ntau daim ntawv thov. Txawm li cas los xij, kev ua haujlwm thiab kev ua tau zoo ntawm ob qho tib si sib txawv thiab muab lawv sib nrug ntawm kev ua tau zoo thiab ntau lwm yam.
Ntau txog HID
HIDs yog hom teeb ci. Raws li lub npe hais txog HID teeb tsim lub teeb los ntawm hluav taws xob tawm ntawm ob lub tungsten electrodes los ntawm cov roj uas muaj nyob rau hauv ib lub raj. Lub raj feem ntau yog ua los ntawm quartz lossis fused alumina. Lub raj muaj cov roj thiab hlau ntsev.
Cov hluav taws xob arc nruab nrab ntawm tungsten electrodes yog khaus heev uas cov pa roj thiab cov hlau ntsev hauv lub raj tam sim tig mus rau hauv cov ntshav. Qhov tso tawm ntawm cov electrons nyob rau hauv lub plasma zoo siab mus rau lub zog siab dua los ntawm lub zog ntawm lub arc muab lub teeb tshwj xeeb nrog kev siv ntau dua. Qhov no yog vim qhov ntau dua ntawm cov hluav taws xob hluav taws xob hloov mus rau lub teeb lub zog hauv cov txheej txheem tawm. Piv rau cov roj teeb thiab cov roj fluorescent, HID teeb ci dua.
Raws li qhov yuav tsum tau ua, cov tshuaj sib txawv yog siv hauv cov raj. Tshwj xeeb, cov hlau uas vaporized thaum lub sijhawm ua haujlwm txiav txim siab feem ntau ntawm cov khoom ntawm HID teeb. Mercury yog thawj cov hlau uas siv los ua cov khoom siv thiab tau muag hauv khw. Tom qab ntawd, cov teeb hluav taws xob sodium kuj raug tsim. Mercury teeb muaj lub teeb xiav, thiab cov teeb sodium muaj lub teeb dawb. Ob lub teeb no yog siv rau hauv cov khoom siv hauv chav kuaj raws li lub teeb pom kev monochromatic.
Tom qab ntawd, cov teeb mercury nrog tsawg dua lub teeb xiav kuj tau tsim, tab sis ob lub teeb mercury thiab sodium tam sim no tau hloov los ntawm cov hlau halide teeb. Tsis tas li ntawd, radioactive isotopes ntawm Krypton thiab Thorium tov nrog argon roj yog siv los txhim kho cov yam ntxwv ntawm lub teeb. Kev tiv thaiv tshwj xeeb raug coj los tiv thaiv α thiab β hluav taws xob, thaum cov isotopes suav nrog hauv cov hlab. Lub arcs ntawm cov teeb no tsim muaj ntau npaum li cas ntawm UV hluav taws xob thiab UV lim kuj siv.
HID teeb yog siv thaum siv lub teeb siab yuav tsum dhau qhov kev nthuav dav loj. Lawv feem ntau yog siv rau hauv cov tsev qhib loj xws li gymnasiums, warehouses, hangars thiab hauv cov chaw qhib uas yuav tsum tau teeb pom kev zoo xws li txoj kev, chaw ncaws pob football, chaw nres tsheb thiab chaw ua si lom zem. HID teeb kuj tseem siv los ua lub teeb taub hau ntawm Automotive thiab ua lub teeb ci hauv kev dhia dej hauv qab.
Ntau txog LED
LED stands rau Lub Teeb Emitting Diode, thiab raws li lub npe qhia nws yog ib qho semiconductor diode nyob rau hauv uas lub diode caij emits lub teeb (photons) thaum tam sim no dhau mus. Thawj siv los ua teeb pom kev zoo, LED tau tshwm sim hauv xyoo 1962 ua cov khoom siv hluav taws xob. Tam sim no LEDs tau siv los ua teeb ib yam nkaus.
Thaum ntxov xyoo 1960 thaum cov LEDs tshiab, lawv tau kim heev thiab tau siv rau hauv cov khoom kim xws li cov khoom siv hauv chav kuaj xwb. Qhov no yog vim siv cov silicon los tsim cov LEDs. Tab sis tom qab ntawd Gallium Arsenide tau qhia, thiab cov nqi tsim khoom thiab yog li cov nqi tau nqis los. Tam sim no peb tuaj yeem pom LEDs hauv txhua yam khoom siv hluav taws xob ua teeb pom kev.
LEDs tsis ntev los no tau hloov kho rau cov teeb pom kev loj. Nrog rau kev txhim kho hauv thev naus laus zis, cov khoom siv semiconductor tau tsim tawm uas tuaj yeem tsim lub teeb nrog kev siv zog ntau dua li yav dhau los. Tam sim no lawv tau siv los teeb cov chav thiab lwm qhov chaw qhib me me. Lawv kuj tau siv los ua lub teeb pom kev ntawm LCD.
YHID vs LED
• HIDs yog arc teeb thiab tsim lub teeb ci siab uas siv tau los teeb pom kev loj. LEDs yog semiconductor diodes uas tawm lub teeb thaum lub sijhawm tam sim no dhau mus thiab muaj qhov siv qis dua ntawm lub teeb piv rau HIDs.
• HID teeb siv sijhawm li ob peb vib nas this kom tau txais qhov ci siab tshaj plaws (lub sijhawm raug coj los ua cov ntshav) thaum LEDs muab tag nrho qhov ci tam sim ntawd.
• HID teeb yog tsis yooj yim thiab muaj filaments lossis rhiab electrodes, yog li, yuav tsum tau saib xyuas. LEDs tau them rau hauv cov khoom translucent lossis pob tshab yas, yog li, tuaj yeem ua haujlwm thiab raug siv tsis zoo.
• HIDs tsis tshua muaj zog, vim yog lawv cov khoom siv kho tshuab ntawm cov khoom siv, tab sis LED muaj lub neej ua haujlwm ntev dua.
