Koj puas paub txog depletion MOSFETs?

Lus txhais thiab yam ntxwv

DEFINITION: Ib depletionMOSFETyog hom tshwj xeeb ntawmMOSFETuas muaj peev xwm ua tau hluav taws xob vim tias cov neeg nqa khoom twb muaj nyob rau hauv nws cov channel thaum lub rooj vag voltage yog xoom lossis nyob rau hauv ib qho tshwj xeeb. Qhov no yog qhov sib piv rau kev txhim khoMOSFETsuas yuav tsum tau ib tug tej yam nqi ntawm lub rooj vag voltage los tsim ib tug conducting channel.

Yam ntxwv: Depletion homMOSFETmuaj qhov zoo ntawm cov tswv yim impedance siab, tsis tshua muaj hluav taws xob tam sim no thiab qis hloov impedance. Cov yam ntxwv no ua rau nws muaj txiaj ntsig rau ntau yam kev siv hauv kev tsim hluav taws xob.

Txoj Cai Ua Haujlwm

Kev khiav hauj lwm hauv paus ntsiab lus ntawm depletionMOSFETstuaj yeem tswj tau los ntawm kev hloov lub rooj vag voltage los tswj tus naj npawb ntawm cov cab kuj hauv cov channel thiab yog li tam sim no. Cov txheej txheem kev khiav hauj lwm tuaj yeem ua tiav hauv cov theem hauv qab no:

Txwv tsis pub lub xeev: Thaum lub rooj vag voltage qis dua qhov tseem ceeb ntawm cov channel thiab qhov chaw, cov cuab yeej nyob rau hauv lub xeev txwv thiab tsis muaj tam sim no dhau los ntawm qhov chaw.MOSFET.

Negative resistance xeev: Raws li lub rooj vag voltage nce, nqi pib tsim nyob rau hauv lub channel, tsim ib tug tsis zoo tiv thaiv nyhuv. Los ntawm kev kho lub rooj vag voltage, lub zog ntawm qhov tsis zoo kuj tuaj yeem tswj tau, yog li tswj cov tam sim no hauv cov channel.

NTAWM STATE: Thaum lub rooj vag voltage txuas ntxiv mus dhau qhov tseem ceeb voltage,lub MOSFETnkag mus rau hauv lub xeev ON thiab ib tug loj tus naj npawb ntawm electrons thiab qhov yog thauj los ntawm lub channel, tsim ib tug tseem ceeb tam sim no.

Saturation: Nyob rau hauv lub xeev, lub tam sim no nyob rau hauv lub channel mus txog ib tug saturation theem, nyob rau hauv uas point txuas ntxiv mus nce lub rooj vag voltage tsis ho nce tam sim no.

Cutoff xeev(ceeb toom: cov lus piav qhia ntawm "lub xeev txiav tawm" ntawm no yuav txawv me ntsis ntawm lwm cov ntaub ntawv vim tias depletionMOSFETsib txwm ua raws li qee qhov xwm txheej): Hauv qee qhov xwm txheej (piv txwv li, kev hloov pauv loj hauv lub rooj vag hluav taws xob), ib qho depletionMOSFETtuaj yeem nkag mus rau hauv lub xeev qis, tab sis tsis yog txiav tawm tag nrho.

Cov cheeb tsam thov

Depletion homMOSFETsmuaj ntau yam kev siv hauv ntau qhov chaw vim lawv cov yam ntxwv ua tau zoo:

Kev tswj fais fab: Siv nws cov input impedance siab thiab tsis tshua muaj to tam sim no cov yam ntxwv kom ua tau zoo zog hloov dua siab tshiab nyob rau hauv lub hwj chim tswj circuits.

Analogs thiab digital circuits: ua lub luag haujlwm tseem ceeb hauv analog thiab digital circuits li hloov cov ntsiab lus lossis cov peev txheej tam sim no.

Tsav tsav: precision tswj ntawm lub cev muaj zog ceev thiab lub kauj yog paub los ntawm kev tswj cov conduction thiab txiav tawm ntawmMOSFETs.

Inverter Circuit Court: Nyob rau hauv lub hnub ci hluav taws xob tsim tshuab thiab xov tooj cua kev sib txuas lus systems, raws li ib tug ntawm cov tseem ceeb Cheebtsam ntawm lub inverter, kom paub qhov kev hloov ntawm DC rau AC.

Voltage regulator: Los ntawm kev kho qhov loj ntawm qhov tso zis voltage, nws paub qhov ruaj khov ntawm qhov hluav taws xob thiab lav qhov kev ua haujlwm ntawm cov khoom siv hluav taws xob.

caveat

Hauv kev siv tswv yim, nws yog ib qho tsim nyog los xaiv qhov tsim nyog depletionMOSFETqauv thiab tsis raws li cov kev xav tau tshwj xeeb.

Txij li depletion homMOSFETsua haujlwm txawv ntawm hom kev txhim khoMOSFETs, lawv xav tau kev saib xyuas tshwj xeeb hauv Circuit Court tsim thiab optimization.

Hauv kev xaus, depletion homMOSFET, raws li ib qho tseem ceeb hauv hluav taws xob tivthaiv, muaj ntau yam ntawm daim ntawv thov kev cia siab nyob rau hauv lub teb ntawm electronics. Nrog kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis thiab kev nce ntawm daim ntawv thov, nws cov kev ua tau zoo thiab daim ntawv thov yuav txuas ntxiv mus ntxiv thiab txhim kho.