Iwo matatu makuru mabasa eMOSFETs

MOSFET inowanzo shandiswa mabasa makuru matatu maseketi ekusimudzira, anogara aripo zvino kubuda uye switching conduction.

 

1, amplification circuit

MOSFET ine yakakwira yekupinza impedance, yakaderera ruzha uye humwe hunhu, saka, inowanzo shandiswa seyakawanda-nhanho yekuwedzera yeyazvino nhanho yekupinza, senge transistor, zvinoenderana nekupinda uye kubuda maseketi ekupedzisira kwesarudzo. yezvakasiyana, inogona kukamurwa kuita matunhu matatu e discharge circuit yeMOSFET, zvichiteerana, iyo yakajairika sosi, kuburitswa kweveruzhinji uye gedhi rakajairwa. Iyi inotevera nhamba inoratidza MOSFET yakajairika sosi amplification wedunhu, umo Rg iri gedhi rekudzivirira, iyo Rs voltage inodonha inowedzerwa kugedhi; Rd ndiyo inodzivirira dhizaini, iyo yekudonha ikozvino inoshandurwa kune yekudonhedza voltage, inokanganisa amplification multiplier Au; Rs ndiyo inopikisa sosi, inopa bias voltage yegedhi; C3 ndiyo bypass capacitor, ichibvisa kuderedzwa kweiyo AC chiratidzo neRs.

 

 

2, iyo yazvino tsime redunhu

Constant current sosi inoshandiswa zvakanyanya mukuyedzwa kwema metrological, sezvinoratidzwa mumufananidzo uri pazasi, inonyanya kuumbwaMOSFETinogara iripo sosi yedunhu, iyo inogona kushandiswa semagineti-yemagetsi mita tuning chiyero maitiro. Sezvo iyo MOSFET iri voltage-mhando yekudzora mudziyo, gedhi rayo rinenge risingatore ikozvino, iyo impedance yekupinza yakakwira zvakanyanya. Kana yakakura inogara yazvino kubuda ichidikanwa kuvandudza huchokwadi, musanganiswa wereferensi sosi uye muenzanisi unogona kushandiswa kuwana mhedzisiro yaunoda.

 

3, dunhu rinochinja

Basa rakakosha reMOSFET ibasa rekuchinja. Kuchinja, mazhinji eakasiyana emagetsi ekudzora mutoro, kushandura magetsi emagetsi switch, nezvimwe.NMOS, Vgs yakakura kudarika imwe kukosha ichaita, inoshanda kune iyo sosi yakagadziriswa, iyo inonzi, iyo inonzi yakaderera-kuguma drive, chero bedzi gedhi regedhi re4V kana 10V rinogona kuva. Kune PMOS, kune rumwe rutivi, Vgs isingasviki imwe kukosha ichaitisa, iyo inoshanda kune iyo nyaya kana sosi yakavakirwa kuVCC, kureva, high end drive. Kunyangwe PMOS inogona kushandiswa zviri nyore semutyairi wekupedzisira, NMOS inowanzo shandiswa mumadhiraivha ekupedzisira nekuda kwekukwira-kupikisa, mutengo wepamusoro, uye mashoma ekutsiva marudzi.

 

Pamusoro pemabasa matatu makuru ataurwa pamusoro apa, maMOSFET anogona zvakare kushandiswa seanosiyana anopikisa kuona magetsi-anodzorwa resistors, uye zvakare ane akawanda maapplication.