Ingabe uyazi mayelana nokuqedwa kwama-MOSFET?

Izincazelo kanye Nezimpawu

INCAZELO: UkunciphaI-MOSFETwuhlobo olukhethekile lweI-MOSFETekwazi ukuqhuba ugesi ngoba abathwali sebevele bekhona esiteshini sawo lapho i-voltage yesango inguziro noma ingaphakathi kwebanga elithile. Lokhu kuphambene nokuthuthukisaAma-MOSFETokudinga inani elithile le-voltage yesango ukuze kwakhiwe isiteshi sokuqhuba.

Izici: Uhlobo lokunciphaI-MOSFETinezinzuzo ze-impedance ephezulu yokufaka, ukuvuza okuphansi kwamanje kanye ne-impedance yokushintsha ephansi. Lezi zici ziyenza ibe yigugu ezinhlobonhlobo zezinhlelo zokusebenza ekwakhiweni kwesekethe.

Isimiso Sokusebenza

Umgomo wokusebenza wokunciphisaAma-MOSFETingalawulwa ngokushintsha i-voltage yesango ukulawula inani labathwali esiteshini futhi ngaleyo ndlela yamanje. Inqubo yokusebenza ingafinyezwa ngezigaba ezilandelayo:

Isimo esingavunyelwe: Uma i-voltage yesango ingaphansi kwe-voltage ebalulekile phakathi kwesiteshi nomthombo, idivayisi isesimweni esenqatshelwe futhi akukho kwamanje okudlulaI-MOSFET.

Isimo sokuphikisa esingesihle: Njengoba i-voltage yesango ikhula, inkokhelo iqala ukwakha esiteshini, idala umphumela omubi wokumelana. Ngokulungisa i-voltage yesango, amandla okumelana okungalungile angalawulwa, ngaleyo ndlela alawule okwamanje esiteshini.

EMBUSWENI: Lapho i-voltage yesango iqhubeka nokukhuphuka idlula i-voltage ebalulekile,i-MOSFETingena esimweni se-ON kanye nenani elikhulu lama-electron kanye nezimbobo zithuthwa ngesiteshi, okwenza okwamanje okuphawulekayo.

Ukugcwaliswa kwesikhala: Esimeni, i-current esiteshini ifinyelela izinga lokugcwala, lapho ukuqhubeka nokwandisa i-voltage yesango akusakhulisi kakhulu okwamanje.

Isimo sokunqunywa(Qaphela: incazelo "yesimo sokunqamuka" lapha ingase yehluke kancane kwezinye izincwadi ngenxa yokunciphaAma-MOSFETnjalo ziphatha ngaphansi kwezimo ezithile): Ngaphansi kwezimo ezithile (isb, uguquko oludlulele ku-voltage yesango), ukunciphaI-MOSFETingase ingene esimweni sokuqhuba okuphansi, kodwa ayinqamuki ngokuphelele.

Izindawo Zokufaka Isicelo

Uhlobo lokunciphaAma-MOSFETzinezinhlobonhlobo zezinhlelo zokusebenza emikhakheni eminingana ngenxa yezici zazo ezihlukile zokusebenza:

Ukuphathwa kwamandla: Isebenzisa i-impedance yayo ephezulu yokufaka kanye nezici zamanje zokuvuza okuphansi ukuze kuzuzwe ukuguqulwa kwamandla okusebenzayo kumasekhethi okuphatha amandla.

Amasekhethi e-analog nedijithali: dlala indima ebalulekile kumasekhethi e-analog nedijithali njengama-switching elements noma imithombo yamanje.

Motor drive: Ukulawulwa okunembile kwejubane lemoto nesiteringi kubonakala ngokulawula ukuqhutshwa nokunqanyulwa kweAma-MOSFET.

Inverter Circuit: Ezinhlelweni zokuphehla amandla elanga nezinhlelo zokuxhumana ngomsakazo, njengenye yezingxenye ezibalulekile ze-inverter, ukuze kuqashwe ukuguqulwa kwe-DC ibe yi-AC.

Isilawuli samandla kagesi: Ngokulungisa usayizi we-voltage ephumayo, ibona ukuphuma okuzinzile kwe-voltage futhi iqinisekisa umsebenzi ojwayelekile wemishini kagesi.

i-caveat

Ekusetshenzisweni okusebenzayo, kuyadingeka ukukhetha ukuncipha okufaneleI-MOSFETimodeli kanye nemingcele ngokwezidingo ezithile.

Kusukela uhlobo lokunciphaAma-MOSFETsebenza ngokuhlukile kuhlobo lokuthuthukisaAma-MOSFET, zidinga ukunakwa okukhethekile ekwakhiweni kwesekethe nokwenza kahle.

Ngamafuphi, uhlobo lokunciphaI-MOSFET, njengengxenye ye-elekthronikhi ebalulekile, inohlu olubanzi lwamathemba ohlelo lokusebenza emkhakheni wezogesi. Ngokuqhubeka okuqhubekayo kwesayensi nobuchwepheshe kanye nokwanda kwesidingo sohlelo lokusebenza, ukusebenza kwayo kanye nobubanzi bokusebenza kwayo nakho kuzoqhubeka nokukhula nokuba ngcono.