Uyazi ukuthi iyini i-N-channel MOSFET?

I. Isakhiwo esiyisisekelo kanye nokwakheka

I-N-channel MOSFET iqukethe izingxenye ezinkulu ezilandelayo:

Isango:i-terminal yokulawula, ngokushintsha i-voltage yesango ukuze ulawule umzila ohambayo phakathi komthombo nokukhipha amanzi.· ·

Umthombo:Ukuphuma kwamanje, ngokuvamile kuxhunywe ohlangothini olubi lwesekethe.· ·

Khipha amanzi: ukungena kwamanje, ngokuvamile okuxhunywe kumthwalo wesifunda.

I-Substrate:Ngokuvamile impahla yohlobo lwe-P-semiconductor, esetshenziswa njenge-substrate yama-MOSFET.

I-insulator:Itholakala phakathi kwesango nesiteshi, ngokuvamile yenziwe nge-silicon dioxide (SiO2) futhi isebenza njenge-insulator.

II. Isimiso sokusebenza

Isimiso sokusebenza se-N-channel MOSFET sisekelwe kumphumela wenkundla kagesi, oqhubeka kanje:

Isimo sokusika:Lapho i-voltage yesango (Vgs) ingaphansi kwe-threshold voltage (Vt), akukho siteshi esiqhuba uhlobo lwe-N esakhiwe ku-substrate yohlobo lwe-P ngaphansi kwesango, ngakho-ke isimo sokunqanyulwa phakathi komthombo nokukhipha amanzi sisendaweni. futhi okwamanje akukwazi ukugeleza.

Isimo sokuqhuba:Lapho i-voltage yesango (i-Vgs) iphakeme kune-voltage ye-threshold (Vt), izimbobo ku-substrate yohlobo lwe-P ngaphansi kwesango ziyaxoshwa, zenze isendlalelo sokunciphisa. Ngokukhula okwengeziwe kwe-voltage yesango, ama-electron akhangwa ebusweni be-substrate yohlobo lwe-P, akha isiteshi sokuqhuba uhlobo lwe-N. Kuleli qophelo, umzila uyakhiwa phakathi komthombo kanye ne-drain kanye ne-current can flow.

III. Izinhlobo nezici

I-N-channel MOSFETs ingahlukaniswa ngezinhlobo ezahlukahlukene ngokuya ngezici zayo, njengeModi Yokuthuthukisa kanye Nemodi Yokuqeda. Phakathi kwawo, ama-MOSFET eNdlela Yokuthuthukisa asesimweni sokunqanyulwa lapho i-voltage yesango inguziro, futhi adinga ukusebenzisa i-voltage yesango elihle ukuze aqhube; kuyilapho ama-MOSFET e-Depletion-Mode asevele esesimweni sokuqhuba lapho i-voltage yesango inguziro.

I-N-channel MOSFET inezici eziningi ezinhle kakhulu ezifana nalezi:

I-impedance ephezulu yokufaka:Isango nesiteshi se-MOSFET kuhlukaniswe ungqimba oluvikelayo, okuholela ekubambeni okuphezulu kakhulu kokufaka.

Umsindo ophansi:Njengoba ukusebenza kwama-MOSFET kungabandakanyi umjovo nokuhlanganiswa kwabathwali abambalwa, umsindo uphansi.

Ukusetshenziswa kwamandla okuphansi: Ama-MOSFET anokusetshenziswa kwamandla okuphansi kuzo zombili izifunda ezivuliwe noma ezivaliwe.

Izici zokushintsha ngesivinini esikhulu:Ama-MOSFET anesivinini sokushintsha esisheshayo futhi afanele amasekhethi emvamisa ephezulu kanye namasekhethi edijithali anesivinini esikhulu.

IV. Izindawo zokufaka isicelo

Ama-MOSFET we-N-channel asetshenziswa kabanzi kumishini kagesi ehlukahlukene ngenxa yokusebenza kwayo okuhle kakhulu, njenge:

Izifunda Zedijithali:Njengengxenye eyisisekelo yamasekhethi esango le-logic, isebenzisa ukucutshungulwa nokulawula amasignali edijithali.

Amasekhethi e-analogue:Isetshenziswa njengengxenye eyinhloko kumasekhethi e-analogue njengama-amplifiers nezihlungi.

Amandla kagesi:Isetshenziselwa ukulawula izinsiza zikagesi ezinjengokushintsha izinto zamandla kanye namadrayivu ezimoto.

Ezinye izindawo:Okufana nokukhanyisa kwe-LED, i-automotive electronics, ukuxhumana okungenantambo nezinye izinkambu nazo zisetshenziswa kabanzi.

Kafushane, i-N-channel MOSFET, njengethuluzi elibalulekile le-semiconductor, idlala indima engenakuthathelwa indawo kubuchwepheshe besimanje be-elekthronikhi.