Basa reMOSFET mumaseketi

MOSFETstamba basamukuchinja matunhundeye kudzora dunhu nekudzima uye chiratidzo chekushandura.MOSFETs inogona kukamurwa zvakafara kuita mapoka maviri: N-channel uye P-channel.

MuN-chiteshiMOSFETcircuit, pini yeBEEP yakakwira kugonesa mhinduro yebuzzer, uye yakaderera kudzima buzzer.P-channelMOSFETkudzora iyo GPS module magetsi ekuisa nekudzima, GPS_PWR pini yakadzikira kana iri, GPS module iri zvakajairika simba rekupa, uye yakakwirira kuita kuti GPS module idzime.

P-channelMOSFETmuN-mhando silicon substrate paP + dunhu ine maviri: dhiza uye sosi. Mapango maviri aya haafambidzane, kana paine simba rakakwana rakawedzerwa kune kwakabva pakadzika, iyo N-mhando yesilicon pazasi pegedhi inobuda seP-type inverse layer, mugero rinobatanidza dhiri uye kwakabva. . Kuchinja magetsi pagedhi kunoshandura density yemakomba ari mugero, nokudaro achichinja chiteshi kuramba. Izvi zvinodaidzwa kuti P-channel yekusimudzira munda maitiro transistor.

NMOS maitiro, Vgs kureba kupfuura imwe kukosha ichave iripo, inoshanda kune yakadzika-yekupedzisira-yekupedzisira drive kesi, chero iyo gedhi voltage ye4V kana 10V pamutsetse.

Hunhu hwePMOS, zvinopesana neNMOS, huchabatika chero bedzi Vgs iri pasi pehumwe kukosha, uye inokodzera kushandiswa mune yakakwira yekupedzisira drive kana sosi yakabatana neVCC. Nekudaro, nekuda kwenhamba diki yemhando dzekutsiva, yakakwira-kupikisa uye mutengo wakakwira, kunyangwe PMOS inogona kushandiswa zviri nyore kana iri yepamusoro-yekupedzisira drive, saka mune yepamusoro-yekupedzisira drive, kazhinji ichiri kushandisa NMOS.

Pakazara,MOSFETsvane yakakwira yekupinza impedance, fambisa yakananga kubatanidza mumaseketi, uye zviri nyore kugadzira mumasekete makuru akabatanidzwa.