Kodi mukudziwa za kuchepa kwa MOSFETs?

Matanthauzo ndi Makhalidwe

TANTHAUZO: KuchepaMOSFETndi mtundu wapadera waMOSFETzomwe zimatha kuyendetsa magetsi chifukwa zonyamula zilipo kale munjira yake pamene magetsi a pachipata ndi ziro kapena mkati mwamtundu wina. Izi ndizosiyana ndi zowonjezeraZithunzi za MOSFETzomwe zimafuna mtengo wina wamagetsi a gate kuti apange njira yoyendetsera.

Makhalidwe: Mtundu wa kuchepaMOSFETili ndi zabwino za impedance yayikulu, kutayikira kochepa komanso kutsika kosinthika kosinthika. Makhalidwewa amachititsa kuti ikhale yamtengo wapatali pamagwiritsidwe osiyanasiyana pamapangidwe a dera.

Mfundo Yogwirira Ntchito

Mfundo yogwira ntchito yochepetseraZithunzi za MOSFETikhoza kuwongoleredwa ndikusintha chipata chamagetsi kuti chiwongolere kuchuluka kwa zonyamulira mumsewu ndipo motero pakali pano. Njira yogwirira ntchito ikhoza kufotokozedwa mwachidule m'magawo awa:

Dziko loletsedwa: Pamene magetsi a pachipata ali pansi pa voteji yovuta pakati pa njira ndi gwero, chipangizocho chimakhala choletsedwa ndipo palibe panopa chikudutsaMOSFET.

Mkhalidwe wotsutsa: Pamene magetsi a pachipata akuwonjezeka, ndalama zimayamba kukwera mu tchanelo, ndikupanga kukana koyipa. Mwa kusintha magetsi a chipata, mphamvu ya kukana koyipa imatha kuwongoleredwa, motero kuwongolera pakali pano munjira.

PA BOMA: Pamene magetsi a pachipata akupitiriza kuwonjezeka kupitirira mphamvu yovuta kwambiri,MOSFETamalowa m'boma la ON ndipo ma electron ambiri ndi mabowo amatengedwa kudzera mu njira, ndikupanga panopa.

Machulukidwe: Mu boma, panopa mu tchanelo amafika mlingo machulukitsidwe, pamene kupitiriza kuonjezera voteji pachipata sichimawonjezera kwambiri panopa.

Cutoff state(Zindikirani: kufotokozera kwa "cutoff state" apa kungakhale kosiyana pang'ono ndi zolemba zina chifukwa kuchepaZithunzi za MOSFETnthawi zonse kuchita zinthu zina): Nthawi zina (mwachitsanzo, kusintha kwakukulu kwa magetsi a gate), kuchepaMOSFETakhoza kulowa m'malo otsika, koma osadulidwa kwathunthu.

Magawo Ofunsira

Mtundu wa kuchepaZithunzi za MOSFETali ndi ntchito zosiyanasiyana m'magawo angapo chifukwa cha mawonekedwe awo apadera:

Kuwongolera mphamvu: Imagwiritsa ntchito kuyika kwake kwakukulu komanso mawonekedwe otsika otsika kuti akwaniritse kusinthika kwamphamvu kwamagetsi owongolera magetsi.

Zozungulira za analogi ndi digito: sewerani gawo lofunikira mu ma analogi ndi ma digito ngati zinthu zosinthira kapena magwero apano.

Kuyendetsa galimoto: Kuwongolera kolondola kwa liwiro lagalimoto ndi chiwongolero kumazindikirika ndikuwongolera kuyendetsa ndikudula kwaZithunzi za MOSFET.

Inverter Circuit: Mu machitidwe opangira magetsi a dzuwa ndi machitidwe oyankhulana ndi wailesi, monga chimodzi mwa zigawo zikuluzikulu za inverter, kuzindikira kutembenuka kwa DC kukhala AC.

Voltage regulator: Posintha kukula kwa voliyumu yotulutsa, imazindikira kutulutsa kokhazikika kwamagetsi ndikutsimikizira ntchito yabwinobwino ya zida zamagetsi.

chenjezo

Muzogwiritsira ntchito, ndikofunikira kusankha kuchepetsedwa koyeneraMOSFETchitsanzo ndi magawo malinga ndi zosowa zenizeni.

Popeza mtundu wa depletionZithunzi za MOSFETzimagwira ntchito mosiyana ndi mtundu wowonjezeraZithunzi za MOSFET, amafunikira chidwi chapadera pakupanga madera ndi kukhathamiritsa.

Mwachidule, mtundu wa kuchepaMOSFET, monga gawo lofunika lamagetsi, liri ndi mwayi wochuluka wogwiritsa ntchito pazinthu zamagetsi. Ndi kupita patsogolo kosalekeza kwa sayansi ndi ukadaulo komanso kuchuluka kwa kufunikira kwa kagwiritsidwe ntchito, magwiridwe antchito ake ndi kuchuluka kwa momwe amagwiritsidwira ntchito azipitilira kukula ndikusintha.