Ua tibzoo saib MOSFETs

MOSFETs yog insulating MOSFETs nyob rau hauv integrated circuits.MOSFETs, raws li ib tug ntawm cov yooj yim pab kiag li lawm nyob rau hauvlub semiconductor teb, yog dav siv nyob rau hauv board-theem circuits raws li zoo raws li nyob rau hauv IC tsim.Qhov ntws thiab qhov chaw ntawmMOSFETs tuaj yeem hloov pauv, thiab tsim nyob rau hauv P-hom backgate nrog thaj tsam N-hom. Feem ntau, ob qhov chaw sib hloov tau, ob qho tib si tsim N-hom cheeb tsam hauv cheeb tsamP-type backgate. Feem ntau, ob thaj chaw no zoo ib yam, thiab txawm tias ob ntu no hloov pauv, kev ua haujlwm ntawm cov cuab yeej yuav tsis cuam tshuam. Yog li ntawd, cov cuab yeej suav hais tias yog symmetrical.

Txoj Cai:

MOSFET siv VGS los tswj tus nqi ntawm "induced charge" los hloov cov xwm txheej ntawm cov channel conductive tsim los ntawm cov "induced charges" los tswj cov dej ntws tam sim no. Thaum MOSFETs raug tsim, muaj coob tus zoo ions tshwm nyob rau hauv cov txheej txheem insulating los ntawm cov txheej txheem tshwj xeeb, yog li ntawd cov nqi tsis zoo yuav hnov ​​​​ntawm lwm sab ntawm lub interface, thiab N-thaj tsam ntawm high-permeability impurities txuas nrog. cov nqi tsis zoo no, thiab cov channel conductive yog tsim, thiab ib tug kuj loj ntws tam sim no, ID, yog generated txawm tias VGS yog 0. Yog hais tias lub rooj vag voltage hloov, tus nqi ntawm induced nqi nyob rau hauv cov channel kuj hloov, thiab qhov dav ntawm cov conductive channel hloov mus rau tib yam. Yog hais tias lub rooj vag voltage hloov, tus nqi ntawm induced nqi nyob rau hauv lub channel kuj yuav hloov, thiab qhov dav nyob rau hauv lub conduction channel kuj yuav hloov, yog li ntawd tus ntws tam sim no ID yuav hloov nrog rau lub rooj vag voltage.

Lub luag haujlwm:

1. Nws tuaj yeem siv rau hauv amplifier Circuit Court. Vim hais tias ntawm lub siab input impedance ntawm MOSFET amplifier, lub capacitance ntawm lub coupling yuav me me thiab electrolytic capacitors siv tsis tau.

High input impedance yog tsim rau impedance conversion. Nws yog feem ntau siv rau impedance hloov dua siab tshiab nyob rau hauv lub tswv yim theem ntawm multi-theem amplifiers.

3, Nws tuaj yeem siv los ua qhov sib txawv ntawm cov resistor.

4, tuaj yeem siv los ua hluav taws xob hloov.

MOSFETs tam sim no tau siv dav hauv ntau daim ntawv thov, suav nrog lub taub hau siab zaus hauv TV thiab hloov cov khoom siv hluav taws xob. Niaj hnub no, bipolar zoo tib yam transistors thiab MOS yog sib xyaw ua ke los tsim IGBT (insulated gate bipolar transistor), uas yog dav siv nyob rau hauv high-power cheeb tsam, thiab MOS integrated circuits muaj cov yam ntxwv ntawm tsawg zog noj, thiab tam sim no CPUs tau lug siv nyob rau hauv MOS circuits.