2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
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.
Pom zoo:
Puas yog cov hluav taws xob muaj hluav taws xob zoo?
Ntau yam tseem ceeb, lossis subatomic, cov khoom ntawm cov khoom muaj cov khoom siv hluav taws xob. Piv txwv li, electrons muaj tus nqi tsis zoothiab protons muaj tus nqi zoo, tab sis neutrons muaj pes tsawg tus nqi. Yuav ua li cas them electrons e nqa?
Puas yog hluav taws xob hluav taws xob muaj ob qhov xwm txheej?
EM hluav taws xob yog lub npe vim nws muaj hluav taws xob thiab sib nqus teb uas ib txhij oscillate hauv cov dav hlau sib koom ua ke rau ib leeg thiab rau kev taw qhia ntawm kev nthuav tawm los ntawm qhov chaw. ✓ Electromagnetic tawg muaj ob qhov xwm txheej:
Puas hluav taws xob hluav taws xob puas tsim hluav taws xob?
Coal feem ntau siv roj los tsim hluav taws xobhauv Tebchaws Meskas. Hauv cov chaw tsim hluav taws xob hluav taws xob hluav taws xob, cov hluav taws xob bituminous, subbituminous thee, lossis lignite raug hlawv. Cov cua kub uas tsim los ntawm kev sib xyaw ntawm cov thee yog siv los hloov cov dej mus rau hauv qhov chaw siab zog, uas tsav lub turbine, uas tsim hluav taws xob.
Lub tshuab hluav taws xob hluav taws xob tsim hluav taws xob li cas?
Piav seb lub twj hluav taws xob hluav taws xob tsim hluav taws xob hla lub membrane li cas. Los ntawm pum electrons hla lub membrane, sab uas cov electrons raug tshem tawm muaj qhov zoo dua, thaum sab tau txais cov hluav taws xob ntau muaj qhov tsis zoo.
Puas yog lub tshuab hluav taws xob puas muaj lub tshuab hluav taws xob?
Vim li cas lub tshuab hluav taws xob sab hauv combustion yuav tsum tsis muaj lub tshuab hluav taws xob los ua kom cov roj tsis zoo li roj av? Spark plugs yog siv nyob rau hauv cov roj cav mus ignite cov pa roj sib tov whereas nyob rau hauv diesel engines lub xub ntiag ntawm lub txim plugs yog tsis tsim nyog.
