FETs da kuma yadda suka yi aiki

FETs ne waɗanda semiconductor na'urorin, da manufa na aiki na wanda dogara ne a kan juriya da wani mai gangara lantarki filin daga daidaitowa na semiconductor abu.

The bayãnin hukuncin alama na da irin wannan na'urar ne cewa filin sakamako transistors da wani babban ƙarfin lantarki riba da kuma wani babban juriya ga mai shigowa.

A wadannan na'urori a cikin halittar da lantarki ne kawai cajin yan dako da irin suna da hannu (electrons).

Akwai iri biyu FETs:

- ciwon Tir tsarin, Ina nufin karfe, bi da wani dielectric, sa'an nan da semiconductor (Mis).

- Manajan tare da pn-maha? Ar.

A tsarin da sauki filin sakamako transistor hada da wani farantin sanya wata semiconductor abu da ciwon daya pn-mika mulki ne kawai a cibiyar da kuma ohmic lambobin sadarwa a gefuna.

Lantarki a cikin irin wannan na'urar ta da wani gudanar da tashar cajin yan dako ake kira tushen da kuma lantarki a kan abin da wayoyin fito daga tashar - magudana.

Wani lokaci ta faru da cewa irin wannan iko key na'urar daga oda. Saboda haka, a lokacin da gyara na wani kayan lantarki ne sau da yawa zama dole don duba su ɗauko.

Don yin wannan, vypayat na'urar, saboda shi ba zai iya duba a kan kayan wutan lantarki. Kuma a sa'an nan, wadannan takamaiman umarnin, ci gaba zuwa wurin biya.

Field sakamako transistors da biyu aiki halaye - tsauri da kuma key.

Transistor aiki - shi ne daya a cikin abin da transistor ne a jihohin biyu - a wani cikakken bude ko cikakken rufaffiyar. Amma wannan tsaka-tsaki jihar, a lokacin da bangaren shi ne bude partially fakowa ba.

A manufa hali, a lokacin da transistor ne "bude", Ina nufin ne abin da ake kira jikewa yanayin, impedance tsakanin tashoshi "magudana" da "source" sifili.

Ikon asarar a lokacin bude jihar ƙarfin lantarki bayyana samfurin (daidaita da sifili) a cikin adadin na yanzu. Saboda haka, ikon masha'a ne sifili.

A cutoff yanayin, Ina nufin idan transistor tubalan, da juriya tsakanin ta "magudana / tushen hanya" deduces o ƙarin tabbatar da rashin iyaka. Ikon masha'a a cikin rufaffiyar jihar ne samfurin na ƙarfin lantarki a fadin halin yanzu darajar daidaita da sifili. Haka kuma, ikon asarar = 0.

Sai dai itace cewa da key yanayin na transistors ikon asarar ne sifili.

A yi, a bude transistor, ta halitta, wasu juriya "magudana / tushen hanya" Za a halin yanzu. Tare da rufaffiyar transistor to wadannan karshe na yanzu low darajar har yanzu faruwa. Saboda haka, ikon asarar a tsaye yanayin a cikin transistor ne kadan.

A da kuzari, a lokacin da transistor aka rufe ko buɗe, boosts ta mikakke yankin da aiki batu inda yanzu gudãna ta cikin transistor, conventionally ne rabin na magudana halin yanzu. Amma irin ƙarfin lantarki "nutse / source" sau da yawa ya kai rabin matsakaicin daraja. Saboda haka, da tsauri kasafi yanayin samar da transistor babbar ikon hasara, wanda rage "ba" da key yanayin ƙwarai Properties.

Amma, bi da bi, da shafe tsawon daukan hotuna na transistor a tsauri yanayin ne yawa fiye da karami da tsawon tsaya a cikin canzawa yanayin. A sakamakon haka, ya dace da wani transistor mataki wanda aiki a sauya sheka yanayin, sosai high da kuma na iya zama da casa'in da uku zuwa casa'in da takwas bisa dari.

Field sakamako transistors wanda aiki a cikin sama yanayin, an isasshe yadu a yi amfani da ikon mayar raka'a, a bugun jini ikon kafofin, da fitarwa matakai na wasu riwayar da sauransu.