Video: Dab tsi yog qhov teeb meem hauv pn hlws ris diode?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Txhais: The muaj peev xwm barrier hauv PN - kev sib txuas diode yog cov thaiv nyob rau hauv uas tus nqi yuav tsum tau ntxiv dag zog rau hla lub cheeb tsam.
Ib yam li ntawd, nws yog nug, dab tsi yog txhais los ntawm kev muaj peev xwm barrier?
Barrier Potential nyob rau hauv ib tug PN hlws ris hais txog lub peev xwm yuav tsum tau kov yeej lub thaiv ntawm PN junction. Thaum cov khoom siv P thiab N cov khoom raug coj mus rau hauv kev sib tshuam, qee qhov ntawm cov khoom siv hluav taws xob ntawm N cov khoom nyob ze ntawm kev sib tshuam hla mus rau cov khoom siv P. Qhov no yog lub npe hu ua barrier muaj peev xwm.
Dab tsi yog txhais los ntawm cheeb tsam depletion thiab muaj peev xwm cuam tshuam hauv kev sib tshuam diode? Depletion txheej yog cov cheeb tsam tsim ib ncig ntawm p-n kev sib tshuam uas yog devoid of free chargers thiab muaj immobile ions. Nws yog tsim los ntawm diffusion ntawm feem ntau cov neeg nqa khoom thoob plaws lub kev sib tshuam thaum p-n kev sib tshuam yog tsim.
Tom qab ntawd, yuav ua li cas muaj peev xwm barrier tsim nyob rau hauv pn junction diode?
Tsim ntawm lub Depletion Region-Thaum instant ntawm lub PN kev sib tshuam tsim dawb electrons nyob ze ntawm kev sib tshuam diffuse hla lub kev sib tshuam mus rau hauv cheeb tsam P thiab ua ke nrog qhov. Lub depletion cheeb tsam tam sim no ua raws li ib tug Barrier . Barrier Potential . Qhov hluav taws xob tsim nyob rau hauv lub depletion cheeb tsam ua raws li ib tug thaiv.
Yuav ua li cas muaj peev xwm barrier tsim?
Barrier Potential : Lub zog hluav taws xob tsim nyob rau hauv lub depletion cheeb tsam ua raws li ib tug thaiv . Lub zog sab nraud yuav tsum tau siv los ua kom cov electrons txav mus thoob plaws thaiv ntawm qhov hluav taws xob. Cov peev xwm Qhov sib txawv yuav tsum tau txav cov electrons los ntawm qhov hluav taws xob yog hu ua barrier muaj peev xwm.
Pom zoo:
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