Dab tsi yog qhov kev voltage ntawm ib tug LED Diode?

1, Cov yam ntxwv yooj yim voltivy ntawm LED Diodes
Cov yam ntxwv voltage ntawm coj diodes tsuas yog xa mus rau lawv cov kev ua haujlwm ntawm cov hluav taws xob voltage (vf). Qhov no yog hais txog cov voltage yuav tsum tau ua rau lub teeb kom pib thaum lub Ncej Sib Xws, nrog tus ncej zoo txuas nrog tus ncej tsis zoo ntawm lub hwj chim. Ntau hom LED DAILES muaj txawv ua hauj lwm txuas ntxiv, uas feem ntau yog nyob ntawm cov qauv band thiab cov txheej txheem tsim qauv ntawm lawv cov ntaub ntawv semiconductor.
Liab LED: Liab LEDs feem ntau muaj qhov kev ua haujlwm qis tshaj plaws, nruab nrab ntawm thaj tsam li 1.8V thiab 2.2V. Qhov no yog vim lub zog sib txawv ntawm cov liab liab yog qhov me me, yog li lawv tuaj yeem pib emitting teeb ntawm tsis tshua muaj hluav taws xob.
Ntsuab LED: Lub operating LED yog feem ntau yog siab dua li ntawd ntawm liab LED, kwv yees li ntawm 2.0V thiab 3.6V. Ntsuab LEDs muaj lub zog loj loj sib txawv, yog li ntau voltage yog qhov yuav tsum tau ua kom zoo rau khoom siv hluav taws xob.
Xiav LED: xiav LED feem ntau yuav tsum muaj kev ua haujlwm ntau dua, kwv yees li ntawm 2.8V thiab 3.6V. Blue LEDs muaj lub zog loj dua thiab yuav tsum muaj lub zog loj dua rau cov tshuab hluav taws xob kom zoo siab, ua rau lawv hloov chaw ntawm txoj kev ua lag luam.
Dawb LED: Dawb LED feem ntau yog tsim los ntawm kev sib txuas cov xiav LED nrog hmoov daj daj fluorescent hmoov. Yog li ntawd, lawv txoj haujlwm voltage zoo ib yam li ntawd xiav leds, kwv yees li ntawm 2.8v thiab 3.6v.
Nws yuav tsum raug sau tseg tias cov kev siv hluav taws xob no tsuas yog kwv yees li kwv yees thiab yuav sib txawv raws cov chaw tsim khoom thiab cov khoom tshwj xeeb. Tsis tas li ntawd, qhov ci ci ntawm ib LED yog ib feem ntawm nws tam sim no, tsis yog nws cov hluav taws xob. Yog li ntawd, tswj tau qhov tam sim no tseem ceeb tshaj qhov tswj hwm tus voltage thaum tsav tsheb LEDs.
2, qhov xwm txheej cuam tshuam rau cov voltage ntawm LED diodes
Cov yam ntxwv voltage ntawm coj dodes yog cuam tshuam los ntawm ntau yam, suav nrog cov hauv qab no:
Cov ntaub ntawv semiconductor: cov ntaub ntawv semiconductor ntawm LED teeb meem thiab bandgap loj, uas nyob rau hauv lem cuam tshuam rau cov voltage uas yuav tsum muaj rau lub teeb pom kev zoo. Piv txwv li, liab LEDs muaj lub zog loj me me thiab xav tau qis dua voltage; Blue LEDs muaj lub zog loj dua sib txawv thiab xav tau ntau dua voltage.
Cov txheej txheem tsim khoom: Cov txheej txheem tsim khoom ntawm LED kuj tseem cuam tshuam rau nws cov yam ntxwv voltage. Piv txwv li, kev loj hlob tuaj yeem, doping kev loj hlob, thiab kev ntim siv ntau lawm tuaj yeem cuam tshuam rau cov voltage thiab luminous efficiency ntawm LEDs.
Qhov kub thiab txias: kev ua haujlwm kub ntawm cov LED kuj tseem tuaj yeem cuam tshuam nws cov yam ntxwv voltage. Raws li qhov kub nce ntxiv, qhov voltage ntawm LED yuav me ntsis txo qis, tab sis ntau dhau yuav ua rau muaj kev ua tau zoo lossis muaj kev puas tsuaj.
Kev laus: LEDs yuav maj mam muaj hnub nyoog thaum siv, thiab lawv cov yam ntxwv voltage tseem yuav hloov tau. Yog li ntawd, nyob rau hauv ntev - Term daim ntawv thov, nws yog qhov tsim nyog los kuaj cov voltage thiab luminous efficiency ntawm cov coj los xyuas kom lawv cov haujlwm ib txwm muaj.
3, Kev ceev faj hauv kev siv cov ntawv thov
Hauv kev siv cov kev siv, txhawm rau kom ntseeg tau tias qhov haujlwm ib txwm ntawm LED diodes thiab nthuav lawv lub neej pabcuam, cov ntsiab lus hauv qab no yuav tsum tau sau tseg:
Xaiv lub zog hluav taws xob tsim hluav taws xob tsim hluav taws xob: lub zog hluav taws xob uas phim cov kev pom zoo ua haujlwm voltage thiab tam sim no ntawm LED xaiv raws li nws cov kev qhia tshwj xeeb. Zam tsis txhob siv ntau dhau kev voltage lossis tam sim no los tiv thaiv kev puas tsuaj rau cov LED.
Ntxiv cov tsav tsheb tam sim no lossis cov tsav tsheb tam sim no: raws li qhov ci ntsa iab ntawm cov coj ncaj qha rau nws tam sim no, nws yog ib qho tsim nyog los tswj qhov ntau ntawm tam sim no thaum tsav tsheb LED. Kev tswj tam sim no tuaj yeem ua tiav los ntawm kev ntxiv cov neeg lim dej tam sim no lossis cov tsav tsheb tas li.
Them sai sai rau tshav kub dissipation: LEDs tsim cua sov thaum lub sijhawm ua haujlwm, thiab tshav kub tsis zoo tuaj yeem ua rau kub ntawm tus coj kom muaj kev ua tau zoo, yog li cuam tshuam rau nws txoj kev ua tau zoo thiab kav lub neej. Yog li no, tsim nyog tshav kub dissipation yuav tsum tau coj hauv cov ntawv thov, xws li siv lub dab dej sov, kiv cua, thiab lwm yam.
Zam kev txuas rov qab: LEDs yog Unidirectional conductive khoom siv, thiab rov qab rov qab kev txuas tuaj yeem ua rau lawv puas. Yog li ntawd, thaum txuas txuas rau Circuit Court, nws yog qhov tsim nyog los xyuas kom meej tias qhov zoo thiab tsis zoo ntawm LED yog kev sib txuas.
4, cov ntawv thov ntawm cov yam ntxwv voltage ntawm coj diodes
Cov yam ntxwv voltage ntawm coj dodes tau siv dav hauv ntau yam kev siv. Piv txwv li, hauv qhov ntsuas teeb pom kev zoo thiab cov lus qhia tawm, cov xim sib txawv LED downes tuaj yeem siv los ua kom pom kev sib txawv; Hauv kev teeb pom kev zoo, lub teeb ci thiab xim kub tuaj yeem hloov kho los ntawm kev hloov kho lub voltage thiab tam sim no ntawm LEDs; Nyob rau hauv kev sib txuas lus kho qhov muag, cov emission cov coj ntawm cov coj tuaj yeem siv tau kom ua tiav qhov kev kis tau tus mob thiab txais tos ntawm cov cim optical.
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