Incazelo enemininingwane yesimiso sokusebenza samandla aphezulu we-MOSFET

Ama-MOSFET anamandla aphezulu (ama-metal-oxide-semiconductor field-effect transistors) adlala indima ebalulekile kubunjiniyela besimanje be-elekthronikhi. Le divayisi isiyingxenye ebalulekile kuma-electronics amandla kanye nezinhlelo zokusebenza zamandla aphezulu ngenxa yokusebenza kwayo okuhle kakhulu nezinhlelo zokusebenza ezihlukahlukene. Le ndatshana izocubungula imigomo yokusebenza yama-MOSFET anamandla amakhulu ukuze anikeze onjiniyela nabathanda izinto zikagesi ukuqonda okuphelele nokujulile.

Iyini i-MOSFET enamandla amakhulu?

I-MOSFET yamandla aphezulu iyiswishi ye-semiconductor ekwazi ukuphatha i-voltage ephezulu yamanje kanye nephezulu. Iqukethe izingxenye ezintathu eziyinhloko: Umthombo, I-Drain kanye neSango. Isango lihlukanisiwe nomthombo futhi lidonsa ungqimba oluncane lwe-oxide, okuyingxenye ye-"oxide" yesakhiwo se-MOS.

Amandla aphezulu kangakanani i-MOSFET esebenza

Isimiso sokusebenza se-MOSFET enamandla amakhulu sisekelwe ekulawuleni inkambu kagesi. Uma i-voltage eya phambili isetshenziswa phakathi kwesango nomthombo, umzila ohambayo uyakhiwa kumpahla ye-semiconductor ngaphansi kwesango, exhuma umthombo nokukhipha, okuvumela ukugeleza kwamanje. Ngokulungisa i-voltage yesango, singakwazi ukulawula ukuqhutshwa kwesiteshi se-conductive, ngaleyo ndlela sizuze ukulawula okunembile kwamanje.

Le nqubo yokulawula inkundla kagesi inika i-MOSFET izinzuzo eziningi, okuhlanganisa ukumelana okuphansi, amandla okushintsha ngesivinini esikhulu kanye nokuphazamiseka kokufaka okuphezulu. Lezi zici zenza ama-MOSFET anamandla aphezulu afanelekele izinhlelo zokusebenza ezidinga ukusebenza kahle okuphezulu nokusabela okusheshayo.

Izinzuzo zama-MOSFET aphezulu

Ukusebenza kahle okuphezulu: Ngenxa yokumelana okuphansi, ama-MOSFET anamandla amakhulu adla amandla amancane kakhulu endaweni, ngaleyo ndlela athuthukise ukusebenza kahle sekukonke.

Ukushintsha okusheshayo: Ama-MOSFET anamandla aphezulu angasuka acime aye enkathini yesikhathi esifushane kakhulu, okubalulekile ekuguquleni imvamisa nokulawula i-pulse-width modulation (PWM).

Ukusebenza kwe-High-frequency: Bayakwazi ukusebenza kumafrikhwensi aphezulu, okwenza iziguquli zamandla zibe zincane futhi zisebenze kahle.

Izindawo zokufaka izicelo

Ama-MOSFET anamandla aphezulu asetshenziswa kakhulu ezintweni zikagesi ezinamandla amakhulu, njengezimoto zikagesi, izinhlelo zamandla avuselelekayo, izinto ezisetshenziswayo zikagesi, kanye nemishini ezishintshayo yezimboni.

Fingqa

Ama-MOSFET anamandla aphezulu abe yingxenye ebalulekile yobuchwepheshe besimanje be-elekthronikhi ngenxa yokusebenza kwawo okuhle kakhulu kanye nezinhlelo zokusebenza ezivumelana nezimo. Ngokuqonda izimiso nezinzuzo zayo zokusebenza, onjiniyela nabaklami bangasebenzisa kangcono le divayisi enamandla ukuze balethe izixazululo ze-elekthronikhi ezisebenza kahle nezithembekile emhlabeni. Lokhu akugcini nje ngokukhuthaza inqubekelaphambili yezobuchwepheshe, kodwa futhi kuletha lula ekuphileni kwethu kwansuku zonke.