Txhim kho-hom MOSFETs (hlau-oxide-semiconductor FETs) yog feem ntau hloov cov ntsiab lus hauv feem ntau cov kev sib txuas. Cov cuab yeej no tawm ntawm xoom rooj vag-qhov voltage. … Nyob rau hauv feem ntau circuits, qhov no txhais tau hais tias rub ib qho kev txhim kho-mos MOSFET lub rooj vag voltage ntawm nws ntws voltage hloov nws ON.
hom kev txhim kho hauv MOSFET yog dab tsi?
About Enhancement-mode MOSFETs
Tsis muaj txoj hauv kev ntawm qhov ntws thiab qhov chaw thaum tsis muaj hluav taws xob siv nruab nrab ntawm lub rooj vag thiab qhov chaw nres nkoj. Kev siv lub qhov rooj-rau-qhov hluav taws xob txhim kho cov channel, ua rau nws muaj peev xwm ua tau tam sim no. Tus cwj pwm no yog vim li cas thiaj li sau cov cuab yeej no txhim kho-hom MOSFET.
MOSFET yog dab tsi piav qhia cov yam ntxwv ntawm kev txhim kho hom MOSFET?
MOSFETs feem ntau muab faib ua ob hom. … Tus MOSFET uas yog qhov pib hauv OFF uas yuav tsum tau muaj qee qhov ntawm qhov hluav taws xob ntawm lub rooj vag davhlau ya nyob twg kom tig ON yog hu ua Enhancement MOSFET. Vim yog siv lub rooj vag voltage lub channel ntawm lub davhlau ya nyob twg ntawm ntws thiab qhov chaw tau txais tsawg resistive.
MOSFET ua haujlwm li cas li cov cuab yeej txhim kho?
Qhov voltage ntawm lub rooj vag tswj kev ua haujlwm ntawm MOSFET. Nyob rau hauv cov ntaub ntawv no, ob qho tib si zoo thiab tsis zoo voltages yuav siv tau rau ntawm lub rooj vag raws li nws yog insulated los ntawm cov channel. Nrog lub rooj vag tsis zoo ntawm qhov tsis zoo, nws ua raws li kev txo qis MOSFET thaum nrog lub rooj vag tsis zoo voltage nws ua raws li Kev Txhim Kho MOSFET.
Dab tsi yog qhov txawv ntawm kev txhim kho thiab kev ua kom tiav?
Nyob rau hauv Kev Txhim Kho MOSFET, cov channel tsis muaj nyob rau hauv thawj zaug thiab raug ntxias xws li cov channel tsim los ntawm kev siv qhov hluav taws xob ntau dua qhov hluav taws xob, ntawm lub rooj vag terminals. Ntawm qhov tod tes, nyob rau hauv depletion MOSFET, cov channel tau tsim tawm mus tas li (los ntawm doping) thaum lub sijhawm tsim khoMOSFET nws tus kheej.
