Muaj ntau hom diodes. Raws li cov khoom siv semiconductor siv, lawv tuaj yeem muab faib ua germanium diodes (Ge diodes) thiab silicon diodes (Si diodes). Raws li lawv cov kev siv sib txawv, lawv tuaj yeem muab faib ua cov ntsuas diodes, rectifier diodes, Zener diodes, hloov diodes, cais diodes, Schottky diodes, lub teeb -emitting diodes (LEDs), silicon fais fab hloov diodes, rotating diodes, thiab lwm yam. nto -ntaus diodes, thiab planar diodes. Ib lub ntsiab lus -contact diode yog tsim los ntawm nias lub hlau nyias nyias mus rau saum npoo ntawm ib tug du semiconductor wafer, thiab hla ib tug mem tes tam sim no los ntawm nws, ua rau ib tug kawg ntawm cov hlau yuav ruaj khov sintered nrog lub wafer, ua ib tug "PN hlws ris". Vim tias nws yog qhov chaw sib cuag, nws tsuas yog tso cai rau me me tam sim no (tsis pub tshaj kaum milliamps), thiab haum rau siab - zaus, qis- circuits tam sim no, xws li xov tooj cua detectors. Ib qhov chaw -contact diode muaj qhov loj "PN hlws ris" cheeb tsam, tso cai rau ib tug loj tam sim no (ntau amps mus rau kaum tawm amps), thiab feem ntau yog siv nyob rau hauv "rectification" circuits uas hloov AC rau DC. Planar diode yog ib qho tshwj xeeb tsim silicon diode uas tuaj yeem nqa tsis tau tsuas yog tam sim no loj xwb tab sis kuj muaj kev ruaj khov thiab txhim khu kev qha, thiab feem ntau siv hauv kev hloov pauv, mem tes, thiab siab - zaus circuits.
Lub teeb-emitting diodes (LEDs) kuj yog tsim los ntawm PN hlws ris thiab nthuav tawm unidirectional conductivity. Txawm li cas los xij, lawv qhov hluav taws xob ua haujlwm tom ntej (tig- ntawm qhov hluav taws xob) yog siab dua li ntawm cov diodes zoo tib yam, kwv yees li 1-2.5V, thaum lawv qhov hluav taws xob thim rov qab qis dua, nyob ib puag ncig 5V. Lawv pib tawm lub teeb thaum lub sijhawm tam sim no nce mus txog kwv yees li 1mA, thiab lub teeb ci ntsa iab yog kwv yees li proportional rau cov haujlwm tam sim no; Txawm li cas los xij, raws li kev khiav hauj lwm tam sim no nce mus txog ib qho nqi, qhov luminous siv maj mam nce mus txog saturation, nthuav tawm qhov tsis yog - kev sib raug zoo nrog cov kev khiav hauj lwm tam sim no. Feem ntau, kev khiav hauj lwm tam sim no ntawm cov LEDs me me yog 10-20mA, nrog rau qhov siab tshaj plaws ua haujlwm tam sim no ntawm 30-50mA.
LED Lub Teeb-Emitting Principple: LEDs tuaj yeem ua rau ntau yam duab, xws li duab plaub, voj voog, ntawv, thiab cov cim, thiab tuaj yeem muaj ntau yam xim, suav nrog liab, ntsuab, daj, txiv kab ntxwv, thiab infrared. Lawv yog cov yam ntxwv ntawm me me, tsawg zog noj, yooj yim ntawm kev tsav tsheb, siab luminous efficiency, ib yam nkaus thiab ruaj khov lub teeb emission, ceev teb ceev, thiab ntev lifespan, thiab yog dav siv nyob rau hauv qhov taw qhia teeb thiab loj -screen zaub li.
