Kodi mukudziwa kuti N-channel MOSFET ndi chiyani?

I. Mapangidwe oyambira ndi kapangidwe kake

N-channel MOSFET imakhala ndi zigawo zazikulu izi:

Geti:chowongolera, posintha voteji pachipata kuti aziwongolera njira yoyendetsera pakati pa gwero ndi kukhetsa.· ·

 

Gwero:Kutuluka kwamakono, kawirikawiri kumagwirizanitsidwa ndi mbali yolakwika ya dera.· ·

 

Kukhetsa: kulowetsedwa kwamakono, kawirikawiri kumagwirizanitsidwa ndi katundu wa dera.

Gawo laling'ono:Nthawi zambiri P-mtundu semiconductor zinthu, ntchito ngati gawo lapansi kwa MOSFETs.

Insulator:Ili pakati pa chipata ndi njira, nthawi zambiri imapangidwa ndi silicon dioxide (SiO2) ndipo imakhala ngati insulator.

II. Mfundo ya ntchito

Mfundo yogwiritsira ntchito N-channel MOSFET imachokera ku mphamvu yamagetsi, yomwe imayendera motere:

Makhalidwe odula:Pamene magetsi a pachipata (Vgs) ali otsika kuposa magetsi olowera pakhomo (Vt), palibe njira yoyendetsera mtundu wa N yomwe imapangidwa mu gawo la P-mtundu pansi pa chipata, choncho malo odulidwa pakati pa gwero ndi kukhetsa ali m'malo. ndipo madzi sangathe kuyenda.

Conductivity state:Pamene magetsi a pachipata (Vgs) ali apamwamba kuposa magetsi (Vt), mabowo mu gawo la P-mtundu pansi pa chipata amathamangitsidwa, ndikupanga wosanjikiza wa kuchepa. Ndi kuwonjezeka kwina kwa magetsi pachipata, ma elekitironi amakopeka pamwamba pa gawo lapansi la P-mtundu, ndikupanga njira yoyendetsera mtundu wa N. Panthawiyi, njira imapangidwa pakati pa gwero ndi kukhetsa ndipo madzi amatha kuyenda.

III. Mitundu ndi makhalidwe

Ma MOSFET a N-channel amatha kugawidwa m'mitundu yosiyanasiyana malinga ndi mawonekedwe awo, monga Mode-Enhancement-Mode ndi Depletion-Mode. Mwa iwo, ma MOSFET a Mode-Enhancement ali m'malo odulidwa pomwe magetsi a pachipata ndi zero, ndipo amafunika kugwiritsa ntchito magetsi olowera pachipata kuti athe kuchita; pamene Depletion-Mode MOSFETs ali kale mu chikhalidwe conductive pamene chipata voteji ndi ziro.

N-channel MOSFETs ali ndi makhalidwe ambiri abwino monga:

Kulowetsa kwakukulu:Chipata ndi njira ya MOSFET zimasiyanitsidwa ndi zosanjikiza zotchingira, zomwe zimapangitsa kuti pakhale kulowetsedwa kwakukulu.

Phokoso lochepa:Popeza kugwira ntchito kwa MOSFET sikuphatikiza jekeseni ndi kuphatikiza kwa onyamula ochepa, phokoso limakhala lochepa.

Kugwiritsa ntchito mphamvu zochepa: Ma MOSFET amagwiritsa ntchito mphamvu zochepa m'maboma ndi kunja.

Mawonekedwe osintha mwachangu:Ma MOSFET ali ndi liwiro losinthira mwachangu kwambiri ndipo ndi oyenera ma frequency apamwamba komanso mabwalo othamanga kwambiri a digito.

IV. Malo ogwiritsira ntchito

Ma MOSFET a N-channel amagwiritsidwa ntchito kwambiri pazida zosiyanasiyana zamagetsi chifukwa chakuchita bwino, monga:

Digital Circuits:Monga chinthu chofunikira pamabwalo a logic gate, imagwiritsa ntchito kukonza ndi kuwongolera ma siginecha a digito.

Zozungulira za analogue:Amagwiritsidwa ntchito ngati chigawo chofunikira pamabwalo a analogue monga amplifiers ndi zosefera.

Zamagetsi Zamagetsi:Amagwiritsidwa ntchito poyang'anira zida zamagetsi zamagetsi monga kusintha kwamagetsi ndi ma drive.

Madera ena:Monga kuyatsa kwa LED, zamagetsi zamagalimoto, kulumikizana opanda zingwe ndi magawo ena amagwiritsidwanso ntchito kwambiri.

Mwachidule, N-channel MOSFET, monga chida chofunikira cha semiconductor, imagwira ntchito yosasinthika muukadaulo wamakono wamagetsi.