Mabda'a shaqada ee qaabka N-channel ee kor u qaadida MOSFET

(1) Saamaynta xakamaynta vGS ee aqoonsiga iyo kanaalka

① Kiiska vGS=0

Waxaa la arki karaa in ay jiraan laba dib-u-celinta PN ee u dhexeeya qulqulka d iyo isha s ee habka-kor u qaadistaMOSFET.

Marka korantada isha-albaabka vGS=0, xitaa haddii vDS-ka korantada isha lagu daro, iyada oo aan loo eegin polarity ee vDS, had iyo jeer waxaa jira isku xirka PN ee gobolka eexda.Ma jiro kanaal xiriiriye ah oo u dhexeeya biya-mareenka iyo isha, markaa qul-qulka ID≈0 hadda.

② Kiiska vGS>0

Haddii vGS>0, beer koronto ayaa laga soo saarayaa lakabka dahaadhka ee SiO2 ee u dhexeeya albaabka iyo substrate-ka.Jihada beerta korantada waxay ku toosan tahay beerta korantada ee lagu hagayo albaabka ilaa substrate-ka dusha sare ee semiconductor.Goobtan korontadu waxay celisaa godadka waxayna soo jiidataa electrons.Godad celinaya: godadka ku jira substrate-ka nooca P ee u dhow albaabka waa la ceyriyaa, taasoo ka tagaysa ions aqbala ma guurto ah (ion taban) si ay u sameeyaan lakabka xaalufinta.Soo jiitaan elektarooniga: Elektaroonnada (sidayaal laga tirada badan yahay) ee ku jira substrate-ka nooca P ayaa soo jiitay dusha sare ee substrate.

(2) Samaynta kanaalka wada shaqaynta:

Marka qiimaha vGS yar yahay oo awoodda soo jiidashada elektarooniga ah ma aha mid xoogan, weli ma jiro kanaal conductive u dhexeeya bullaacadaha iyo isha.Marka vGS korodho, elektaroono badan ayaa soo jiidanaya lakabka sare ee substrate-ka P.Marka vGS gaadho qiimo gaar ah, elektaroonnadani waxay sameeyaan lakab khafiif ah oo N-nooca ah oo ku yaal dusha sare ee substrate-ka P ee u dhow albaabka waxayna ku xiran yihiin labada gobol ee N+, samaynta kanaalka N-nooca u dhexeeya qulqulka iyo isha.Nooceeda habdhaqanka ayaa ka soo horjeeda kan substrate-ka P, sidaas darteed waxa kale oo loo yaqaan lakabka roga.VGS-da weyni waa, way sii xoog badan tahay beerta korantada ee ku shaqeyneysa dusha sare ee semiconductor waa, inta badan elektaroonnada ayaa soo jiidanaya dusha sare ee P substrate, sii dhumuc weynaanta kanaalka korantada, iyo yaraanta iska caabbinta kanaalka.Voltage-ka-albaabka marka kanaalka bilaabay inuu sameeyo waxa loo yaqaan danab danab ah, oo uu matalo VT.