Ndeipi musimboti wekushanda kweMOSFET?

MOSFET (FieldEffect Transistor abbreviation (FET)) zitaMOSFET. nenhamba shoma yevatakuri kuti vatore chikamu mukupisa conductivity, inozivikanwawo semulti-pole junction transistor. Iyo yakakamurwa semagetsi-inodzorwa semi-superconductor mudziyo. Kuvapo kwekupokana kwekupokana kwakakwira (10 ^ 8 ~ 10 ^ 9 Ω), ruzha rwakaderera, kuderera kwesimba rekushandisa, static renji, nyore kubatanidza, hapana chechipiri kuparara chiitiko, inishuwarenzi basa regungwa rakakura uye zvimwe zvakanakira, ikozvino rachinja bipolar junction transistor uye simba junction transistor yevashandi vakasimba.

MOSFET maitiro

Chekutanga: MOSFET iri voltage mastering mudziyo, iyo kuburikidza neVGS (gedhi source voltage) kuti igone ID (drain DC);

Chepiri:MOSFET'skubuda DC idiki kwazvo, saka kubuda kwayo kuramba kwakakura kwazvo.

Zvitatu: inoshandiswa zvishomanana zvinotakura kuitisa kupisa, uye nokudaro ine chiyero chakanaka chekugadzikana;

Zvina: inosanganisira nzira yakaderedzwa yekudzikisa magetsi ediki coefficients kuti ive duku kudarika transistor inosanganisira nzira yakaderedzwa yemagetsi ekuderedza maduku maduku;

Chechishanu: MOSFET anti-irradiation simba;

Nhanhatu: nokuti hapana chikanganiso chekuita kwekupararira kwevashoma kunokonzerwa nezvikamu zvakapararira zveruzha, nokuti ruzha rwakaderera.

MOSFET basa musimboti

MOSFETbasa musimboti mumutsara mumwe, ndiko kuti, "kudonhedza - tsime famba nomugero pakati ID, pamwe electrode uye chiteshi pakati pn akavakwa kuva reverse kurerekera electrode voltage kuti kugona ID". Zvakanyanya, iyo amplitude yeID kudunhu rese, ndiko kuti, chiteshi chepakati-chikamu nzvimbo, ndeye pn junction counter-biased variation, kuitika kwedepletion layer kuti iwedzere kusiyanisa kwekutonga kwechikonzero. Mugungwa risina kuzara reVGS = 0, kuwedzera kwechiratidziro cheshanduko hakuna kukura zvakanyanya nokuti, maererano nemagnetic field yeVDS yakawedzerwa pakati pemvura-source, mamwe maerekitironi ari mugungwa remvura anodhonzwa nedhini. , kureva, pane DC ID chiitiko kubva kudhiraivha kuenda kunobva. Iyo ine mwero layer inokura kubva kugedhi kuenda kudhiramu inoumba rudzi rwekuvharika kwemuviri wese wechiteshi, ID yakazara. Tarisa kune iyi pateni sepinch-off. Izvi zvinomiririra kuti shanduko inovhara chiteshi chese, uye hakusi kuti iyo DC yakagurwa.

Muchikamu chekushandura, nokuti hapana kuzvifambisa kwema electrons nemakomba, muchimiro chechokwadi chekudzivirira kwehupo hwehuwandu hweDC ikozvino yakaoma kufamba. Zvisinei, simba remagineti pakati pemvura - chitubu, mukuita, maviri ekuchinja dhizaini yekubata dhiraini uye gedhi danda rezasi kuruboshwe, nekuti kukukurwa remagineti kunokweva maerekitironi akakwira-kumhanya kuburikidza neshanduko layer. Nekuti kusimba kweiyo inodonha magineti haichinji kuzara kweiyo ID chiitiko. Chechipiri, VGS kune yakashata chinzvimbo shanduko, kuitira kuti VGS = VGS (yakadzimwa), ipapo shanduko yekuchinja inoshandura zvakanyanya chimiro chekufukidza gungwa rose. Uye iyo magineti yeVDS inowedzerwa zvakanyanya kune yekuchinja layer, iyo magineti iyo inokwevera iyo erekitironi kunzvimbo yekukukurwa, chero padyo nepanotangira danda reipfupi kwazvo, izvo zvakanyanya kuti simba reDC rirege. kukwanisa kumira.