Koj puas paub tias N-channel MOSFET yog dab tsi?

I. Cov qauv tsim thiab muaj pes tsawg leeg

N-channel MOSFET muaj cov hauv qab no tseem ceeb:

Rooj vag:lub davhlau ya nyob twg tswj, los ntawm kev hloov lub rooj vag voltage los tswj cov conductive channel ntawm qhov chaw thiab ntws.· ·

Qhov chaw:Tam sim no outflow, feem ntau txuas nrog rau sab tsis zoo ntawm lub Circuit Court.· ·

Dej ntws: tam sim no inflow, feem ntau txuas nrog lub load ntawm lub Circuit Court.

Substrate:Feem ntau yog P-hom semiconductor khoom, siv los ua substrate rau MOSFETs.

Insulator:Nyob nruab nrab ntawm lub rooj vag thiab cov channel, nws feem ntau yog ua los ntawm silicon dioxide (SiO2) thiab ua raws li lub rwb thaiv tsev.

II. Txoj cai ntawm kev ua haujlwm

Lub hauv paus ntsiab lus ntawm kev khiav hauj lwm ntawm N-channel MOSFET yog ua raws li cov nyhuv hluav taws xob, uas ua raws li hauv qab no:

Txoj kev txiav tawm:Thaum lub rooj vag voltage (Vgs) qis dua qhov pib qhov hluav taws xob (Vt), tsis muaj N-hom kev coj ua channel yog tsim nyob rau hauv P-hom substrate hauv qab lub rooj vag, thiab yog li ntawd qhov kev txiav tawm ntawm lub hauv paus thiab ntws tawm yog nyob rau hauv qhov chaw. thiab tam sim no tsis tuaj yeem ntws.

Conductivity xeev:Thaum lub rooj vag voltage (Vgs) siab tshaj qhov pib voltage (Vt), qhov nyob rau hauv P-hom substrate hauv qab lub rooj vag yog repelled, tsim ib tug depletion txheej. Nrog rau kev nce ntxiv hauv qhov rooj vag voltage, electrons yog attracted rau saum npoo ntawm P-hom substrate, tsim N-hom conducting channel. Nyob rau ntawm no, ib txoj kev yog tsim ntawm qhov chaw thiab ntws thiab tam sim no ntws.

III. Hom thiab yam ntxwv

N-channel MOSFETs tuaj yeem muab faib ua ntau hom raws li lawv cov yam ntxwv, xws li Kev Txhim Kho-Hom thiab Depletion-Mode. Ntawm lawv, Kev Txhim Kho-Hom MOSFETs yog nyob rau hauv lub xeev txiav tawm thaum lub rooj vag voltage yog xoom, thiab yuav tsum tau siv lub qhov rooj zoo voltage thiaj li ua tau; thaum Depletion-Mode MOSFETs twb nyob rau hauv lub xeev conductive thaum lub rooj vag voltage yog xoom.

N-channel MOSFETs muaj ntau yam zoo heev xws li:

High input impedance:Lub rooj vag thiab channel ntawm MOSFET yog cais los ntawm ib txheej insulating, uas ua rau cov input impedance siab heev.

Tsawg suab nrov:Txij li thaum kev ua haujlwm ntawm MOSFETs tsis koom nrog kev txhaj tshuaj thiab kev sib xyaw ntawm cov neeg nqa khoom tsawg, lub suab nrov tsawg.

Tsawg zog noj: MOSFETs muaj kev siv hluav taws xob tsawg hauv ob lub xeev thiab sab nraud.

High-speed switching yam ntxwv:MOSFETs muaj qhov hloov pauv ceev ceev heev thiab tsim nyog rau cov kab hluav taws xob ntau zaus thiab cov kab hluav taws xob ceev ceev.

IV. Cov cheeb tsam ntawm daim ntawv thov

N-channel MOSFETs tau siv dav hauv ntau yam khoom siv hluav taws xob vim lawv qhov kev ua tau zoo, xws li:

Digital Circuits:Raws li lub hauv paus ntsiab lus ntawm logic rooj vag circuits, nws siv cov txheej txheem thiab tswj cov teeb liab digital.

Analogue circuits:Siv los ua ib qho tseem ceeb hauv cov circuits xws li amplifiers thiab lim.

Lub zog Electronics:Siv los tswj cov khoom siv hluav taws xob hluav taws xob xws li hloov cov khoom siv hluav taws xob thiab lub cev muaj zog.

Lwm thaj chaw:Xws li LED teeb pom kev zoo, automotive electronics, wireless kev sib txuas lus thiab lwm yam kev lag luam kuj tau siv dav.

Hauv cov ntsiab lus, N-channel MOSFET, uas yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob semiconductor, ua lub luag haujlwm hloov tsis tau hauv cov tshuab hluav taws xob niaj hnub no.