Ngaba uyazi ukuba yintoni i-N-channel MOSFET?

I. Ubume obusisiseko kunye nokwakheka

I-N-channel MOSFET inala macandelo alandelayo:

Isango:i-terminal yokulawula, ngokutshintsha i-voltage yesango ukulawula i-channel conductive phakathi komthombo kunye ne-drain.· ·

Umthombo:Ukuphuma kwangoku, ngokuqhelekileyo kuxhunywe kwicala elibi lesekethe.· ·

Khupha amanzi: ukungena kwangoku, ngokuqhelekileyo kuxhunywe kumthwalo wesiphaluka.

Indawo engaphantsi:Ngokuqhelekileyo i-P-type semiconductor imathiriyeli, esetyenziswa njenge-substrate yee-MOSFETs.

Isigqubuthelo:Ifumaneka phakathi kwesango kunye neshaneli, ngokuqhelekileyo yenziwe nge-silicon dioxide (SiO2) kwaye isebenza njenge-insulator.

II. Umgaqo wokusebenza

Umgaqo wokusebenza we-N-channel MOSFET usekwe kwisiphumo sebala lombane, oqhubeka ngolu hlobo lulandelayo:

Imo yokusikwa:Xa i-voltage yesango (i-Vgs) iphantsi kune-voltage ye-threshold (Vt), akukho mjelo wokuqhuba uhlobo lwe-N lwenziwa kwi-substrate yohlobo lwe-P ngaphantsi kwesango, kwaye ngoko ke imeko yokunqunyulwa phakathi komthombo kunye ne-drain ikhona. kwaye umsinga awukwazi ukuhamba.

Imeko yokuqhuba:Xa i-voltage yesango (i-Vgs) iphezulu kune-voltage ye-threshold (Vt), izimbobo kwi-substrate yohlobo lwe-P ngaphantsi kwesango iyagxothwa, yenze i-depletion layer. Ngokunyuka ngakumbi kwi-voltage yesango, ii-electron zitsalwa kumphezulu we-P-type substrate, zenza i-N-type conducting channel. Ngeli xesha, indlela yenziwa phakathi komthombo kunye ne-drain kunye ne-current can flow.

III. Iintlobo kunye neempawu

I-N-channel MOSFETs inokuhlelwa kwiindidi ezahlukeneyo ngokweempawu zazo, ezifana neModi yoPhuculo kunye neModi yokunciphisa. Phakathi kwazo, ii-MOSFETs zeNdlela yoPhuculo zikwimeko yokunqunyulwa xa isango lombane liyi-zero, kwaye kufuneka lifake umbane wesango eliqinisekileyo ukuze liqhube; ngelixa i-Depletion-Mode MOSFETs sele ikwimo yokuqhuba xa i-voltage yesango ingu-zero.

I-N-channel MOSFET ineempawu ezininzi ezibalaseleyo ezifana nezi:

I-impedance ephezulu:Isango kunye nejelo le-MOSFET libekwe lodwa ngumaleko wokugquma, okhokelela kuthintelo oluphezulu kakhulu.

Ingxolo ephantsi:Kuba ukusebenza kwee-MOSFET kungabandakanyi inaliti kunye nokudibanisa abathwali abambalwa, ingxolo iphantsi.

Ukusetyenziswa kwamandla aphantsi: Ii-MOSFETs zinosetyenziso oluphantsi lwamandla kuzo zombini iindawo ezingaphakathi nangaphandle.

Iimpawu zokutshintsha kwesantya esiphezulu:Ii-MOSFETs zinezantya zokutshintsha ezikhawuleza kakhulu kwaye zifanelekile kwiisekethe ezihamba rhoqo kunye neesekethe zedijithali ezinesantya esiphezulu.

IV. Iindawo zesicelo

Ii-MOSFET ze-N-channel zisetyenziswa ngokubanzi kwizixhobo zombane ezahlukeneyo ngenxa yokusebenza kwazo okugqwesileyo, ezinje:

IiSekethe zeDijithali:Njengento esisiseko yeesekethe zesango le-logic, izalisekisa ukusetyenzwa kunye nokulawulwa kweempawu zedijithali.

Iisekethe ze-analogue:Isetyenziswe njengecandelo eliphambili kwiisekethe ze-analogue ezifana ne-amplifiers kunye nezihlungi.

Umbane woMbane:Isetyenziselwa ukulawula izixhobo zombane zombane ezifana nokutshintsha izixhobo zombane kunye neemoto zokuqhuba.

Ezinye iindawo:Okufana nezibane ze-LED, ii-elektroniki zeemoto, unxibelelwano lwamacingo kunye nezinye iindawo nazo zisetyenziswa ngokubanzi.

Ngamafutshane, i-N-channel MOSFET, njengesixhobo esibalulekileyo se-semiconductor, idlala indima engenakuthatyathelwa indawo kubuchwephesha be-elektroniki bale mihla.