Daim ntawv thov yam ntxwv ntawm Field-Effect Transistors (FETs) thiab Transistors:
1. Lub hauv paus (s), lub rooj vag (g), thiab ntws (d) ntawm ib daim teb - cuam tshuam transistor (FET) sib raug rau cov emitter (e), puag (b), thiab collector (c) ntawm lub transistor, raws li, thiab lawv cov haujlwm zoo sib xws.
2. FETs yog voltage-tswj tam sim no, nrog VGS tswj iD. Lawv qhov amplification factor gm feem ntau yog me me, ua rau muaj peev xwm amplification tsis zoo. Transistors, ntawm qhov tod tes, yog tam sim no - tswj cov khoom siv tam sim no, nrog iB (lossis iE) tswj iC.
3. FETs kos yuav luag tsis muaj tam sim no los ntawm lub rooj vag (ig quorum 0), thaum transistors ib txwm kos ib qho tam sim no los ntawm lub hauv paus. Yog li ntawd, lub rooj vag input tsis kam ntawm FET yog siab dua li ntawm transistor.
4. FETs ua hluav taws xob siv cov khoom siv feem ntau; transistors siv hluav taws xob siv ob qho tib si feem ntau thiab cov neeg nqa khoom tsawg. Cov neeg nqa khoom tsawg tsawg yog qhov cuam tshuam loj heev los ntawm yam xws li kub thiab hluav taws xob. Yog li ntawd, FETs muaj qhov kub thiab txias thiab kev tiv thaiv hluav taws xob zoo dua li cov transistors. FETs yuav tsum tau siv nyob rau hauv ib puag ncig uas muaj qhov sib txawv ntawm qhov kub thiab txias (kub, thiab lwm yam) . 5. Thaum lub hauv paus hlau ntawm ib daim teb - cuam tshuam transistor (FET) txuas nrog substrate, qhov chaw thiab qhov ntws tuaj yeem hloov pauv nrog qhov hloov me me ntawm cov yam ntxwv; Txawm li cas los xij, thaum lub collector thiab emitter ntawm ib tug bipolar hlws ris transistor (BJT) yog interchanged, cov yam ntxwv txawv heev, thiab tus nqi txo considerably.
6. FETs muaj lub suab nrov qis heev, ua rau lawv qhov kev xaiv zoo tshaj plaws rau theem nkag ntawm qis - suab nrov amplifier circuits thiab circuits xav tau lub teeb liab siab - rau - suab nrov piv.
7. Ob leeg FETs thiab BJTs tuaj yeem siv los tsim ntau yam amplifier thiab switching circuits, tab sis FETs tau dav siv nyob rau hauv loj -scale thiab loj heev -scale integrated circuits vim lawv cov txheej txheem tsim yooj yim, tsawg zog noj, zoo thermal stability, thiab dav kev khiav hauj lwm voltage ntau.
8. BJTs muaj siab rau -tsis kam, thaum FETs muaj tsawg ntawm -tsis kam, tsuas yog ob peb puas milliohms. Hauv cov khoom siv hluav taws xob tam sim no, FETs feem ntau yog siv los ua cov keyboards vim lawv qhov ua tau zoo dua.
Kev sib piv ntawm FETs thiab Bipolar Junction Transistors (BJTs):
1. FETs yog qhov hluav taws xob- cov khoom siv tswj tau, nrog qhov tsawg kawg tam sim no rub tawm ntawm lub rooj vag, thaum BJTs yog tam sim no - cov khoom siv tswj tau, yuav tsum muaj qee qhov tam sim no los ntawm lub hauv paus. Yog li ntawd, thaum qhov ntsuas tam sim no ntawm lub teeb liab qhov chaw me me heev, yuav tsum xaiv qhov chaw - cuam tshuam transistor (FET) .
2. FETs ua hluav taws xob siv cov neeg nqa khoom feem ntau, thaum cov khoom siv hluav taws xob siv hluav taws xob siv ob hom kev nqa khoom. Txij li cov neeg nqa khoom tsawg tsawg yog qhov nkag siab zoo rau cov xwm txheej sab nraud xws li kub thiab hluav taws xob, FETs yog qhov tsim nyog rau cov ntawv thov uas muaj qhov sib txawv ntawm ib puag ncig.
3. Dhau li ntawm siv los ua amplifying pab kiag li lawm thiab controllable keyboards zoo li transistors, FETs kuj siv tau raws li voltage-tswj kuj sib txawv linear resistors.
4. Lub hauv paus thiab ntws ntawm FET yog cov qauv sib luag thiab sib hloov tau. Lub rooj vag- qhov hluav taws xob ntawm qhov depletion- hom MOSFET tuaj yeem ua qhov zoo lossis tsis zoo. Yog li, FETs muaj kev hloov pauv ntau dua li cov transistors.
