kev sib txuas yog hais tias thim rov qab. Txij li thaum p-n junctions coj hluav taws xob hauv ib qho kev taw qhia, lawv yog hom diode. Diodes yog lub tsev tseem ceeb ntawm cov khoom siv hluav taws xob semiconductor.
Thaum PN kev sib tshuam tsis ua nws?
14. Thaum P-N kev sib tshuam tsis ua, nws yog: A. Reverse biased.
pn junctions ua haujlwm li cas?
Thaum lub p-n junction raug tsim, qee cov dawb electrons nyob rau hauv n-thaj tsam diffuse hla qhov sib txuas thiab sib txuas nrog qhov los tsim cov ions tsis zoo. Ua li no lawv tawm hauv qab cov ions zoo ntawm cov chaw pub dawb tsis huv. Qhia kom meej ntxiv ntawm cheeb tsam depletion.
siv PN kev sib tshuam yog dab tsi?
Kev siv ntawm PN Junction Diode
p-n junction diode tuaj yeem siv tau ua a photodiode raws li lub diode rhiab rau lub teeb thaum lub teeb tsa ntawm lub diode rov qab -tsis ncaj. Nws tuaj yeem siv los ua lub hnub ci cell. Thaum lub diode yog pem hauv ntej-biased, nws tuaj yeem siv rau hauv daim ntawv thov teeb pom kev zoo.
Vim li cas diode ua tam sim no nyob rau hauv kev tsis ncaj ncees?
Kev tsis ncaj ncees rau pem hauv ntej muaj qhov hluav taws xob anode uas loj dua li qhov hluav taws xob cathode. … Forward bias txo tus diode qhov tsis kam, thiab thim rov qab kev tsis ncaj ncees nce lub diode qhov tsis kam. Cov tam sim no ntws tsis muaj zog thaum nyob rau hauv pem hauv ntej kev tsis ncaj ncees, tab sis rov qab bias tsis tso cai rau tam sim no ntws los ntawm diode.
