Waa maxay mabda'a hawlgalka MOSFET?

MOSFET (FieldEffect Transistor soo gaabinta (FET)) cinwaankaMOSFET. tiro yar oo sideyaal ah si ay uga qayb qaataan kulaylka kuleyliyaha, sidoo kale loo yaqaan transistor-ka isku xidhka tiirarka badan. Waxa loo kala saaray sidii qalab-kooban-koontarool oo korantada lagu maamulo. Iska caabin wax-soo-saarka hadda jira waa mid sarreeya (10 ^ 8 ~ 10 ^ 9 Ω), qaylada hoose, isticmaalka awoodda hooseeya, kala duwanaanta joogtada ah, fududahay in la isku daro, ma jirto dhacdo burbur labaad, hawsha caymiska ee badda ballaaran iyo faa'iidooyinka kale, ayaa hadda bedelay transistor-ka laba-cirifoodka iyo isgoysyada korantada ee wada-shaqeynta xooggan.

Tilmaamaha MOSFET

Marka hore: MOSFET waa aaladda korantada hagta, iyada oo sii marta VGS (voltaga isha albaabka) ilaa aqoonsiga Master (Drin DC);

Labaad:MOSFETwax soo saarka DC waa mid aad u yar, sidaas darteed iska caabintiisa wax soo saarku aad buu u weyn yahay.

Saddex: waxa lagu dabaqaa dhawr sideyaal si ay u qabato kuleyl, sidaas awgeedna waxay leedahay cabbir ka wanaagsan oo xasilloonida;

Afar: waxay ka kooban tahay dariiqa la dhimay ee hoos u dhigista korantada ee iskuxirayaasha yaryar si ay uga yaraadaan transistor-ka waxay ka kooban tahay dariiq yar oo hoos u dhigista korantada ee isugeynta yaryar;

Shanaad: MOSFET awoodda ka-hortagga shucaaca;

Lix: sababtoo ah ma jiro hawl khaldan oo kala firidhsan dadka laga tirada badan yahay ee ay sababto qaybo kala firdhisan oo buuq ah, sababtoo ah qaylada ayaa yar.

MOSFET mabda'a hawsha

MOSFETmabda'a shaqada ee hal jumlad, taas oo ah, "daadi - isha ku dhex mara kanaalka u dhexeeya aqoonsiga, oo leh electrode iyo kanaalka u dhexeeya pn-ga oo loo dhisay danab korantada eexda si uu u aqoonsado aqoonsiga". Si sax ah u badan, baaxadda aqoonsiga ee wareegga wareegga, taas oo ah, kanaalka isgoysyada qaybta, waa pn-ka kala duwanaanshaha lidka-iska-hortagga ah, dhacdada lakabka dhimista si loo ballaariyo kala duwanaanshiyaha aqoonta sababta. Badda aan dheregsanayn ee VGS=0, balaadhinta lakabka kala-guurka ee la tilmaamay maaha mid aad u weyn sababtoo ah, marka loo eego goobta magnetic VDS ee lagu daray inta u dhaxaysa ilo-biyoodka, qaar ka mid ah electrons ee badda isha ayaa la jiidaya qulqulka. , tusaale ahaan, waxa jira hawlo aqoonsi DC ah oo ka imanaya biya-mareenka ilaa isha. Lakabka dhexdhexaadka ah ee ka soo baxaya albaabka ilaa biya-mareenka wuxuu samayn doonaa nooca xannibaadda ee jirka oo dhan kanaalka, aqoonsi buuxa. Tixraac qaabkan sida qanjaruufo. Tani waxay calaamad u tahay in lakabka kala-guurka uu xannibo dhammaan kanaalka, mana aha in DC-ga la gooyo.

In lakabka kala guurka, sababtoo ah ma jiraan wax is-dhaqdhaqaaqa electrons iyo godadka, in qaabka dhabta ah ee sifooyinka insulating ee jiritaanka hadda DC guud ahaan waa adag tahay in la guuro. Si kastaba ha ahaatee, garoonka magnetic u dhexeeya dheecaan - isha, in dhaqanka, labada lakabka kala guurka xiriir dheecaan iyo tiirka albaabka hoose ee bidix, sababtoo ah duufsan magnetic jiido electrons-xawaaraha sare iyada oo lakabka kala guurka ah. Sababtoo ah xoogga goobta magnetic magnetic si fudud ma beddeleyso buuxinta goobta aqoonsiga. Marka labaad, VGS ee booska taban ayaa isbeddelaya, si VGS = VGS (off), ka dibna lakabka kala-guurka ayaa si weyn u beddelaya qaabka daboolaya badda oo dhan. Goobta magnetic ee VDS waxaa inta badan lagu daraa lakabka kala-guurka, magnetic field ee u soo jiidaya elektarooniga booska qulqulaya, ilaa iyo inta u dhow cirifka isha ee aad u gaaban oo dhan, taas oo ka sii badan si awoodda DC aysan u ahayn. awood u leh inay fadhiid.