MOSFET vs BJT
Transistor yog ib qho khoom siv hluav taws xob semiconductor uas muab lub teeb liab hloov hluav taws xob ntau rau kev hloov pauv me me hauv cov teeb liab me me. Vim qhov zoo no, cov cuab yeej siv tau los ua ib qho amplifier lossis hloov. Transistor tau tso tawm hauv xyoo 1950 thiab nws tuaj yeem suav tias yog ib qho tseem ceeb tshaj plaws tsim nyob rau xyoo pua 20th xav txog kev pab rau IT. Nws yog cov cuab yeej hloov kho sai thiab ntau hom transistors tau qhia. Bipolar Junction Transistor (BJT) yog thawj hom thiab Hlau Oxide Semiconductor Field Effect Transistor (MOSFET) yog lwm hom transistor qhia tom qab.
Bipolar Junction Transistor (BJT)
BJT muaj ob PN junctions (ib qho kev sib txuas ua los ntawm kev sib txuas p hom semiconductor thiab n hom semiconductor). Ob qhov kev sib txuas no yog tsim los ntawm kev sib txuas ntawm peb daim semiconductor hauv kev txiav txim ntawm P-N-P lossis N-P-N. Yog li ob hom BJTs hu ua PNP thiab NPN muaj.
Peb lub tshuab hluav taws xob txuas nrog peb qhov chaw semiconductor thiab cov hlau lead nruab nrab hu ua 'puag'. Lwm ob qhov kev sib tshuam yog 'emitter' thiab 'collector'.
Hauv BJT, cov khoom loj loj emitter (Ic) tam sim no yog tswj los ntawm lub hauv paus me me emitter tam sim no (IB) thiab cov cuab yeej no yog siv los tsim amplifiers lossis keyboards. Yog li ntawd nws tuaj yeem suav tau tias yog lub tshuab tsav tam sim no. BJT feem ntau yog siv hauv amplifier circuits.
Metal Oxide Semiconductor Field Effect Transistor (MOSFET)
MOSFET yog hom Field Effect Transistor (FET), uas yog ua los ntawm peb lub davhlau ya nyob twg hu ua 'Gate', 'Source' thiab 'Drain'. Ntawm no, ntws tam sim no yog tswj los ntawm lub rooj vag voltage. Yog li, MOSFETs yog cov khoom siv hluav taws xob tswj hluav taws xob.
MOSFETs muaj nyob rau hauv plaub yam sib txawv xws li n channel lossis p channel nrog rau hauv kev txo qis lossis kev txhim kho. Cov dej ntws thiab qhov chaw yog ua los ntawm n hom semiconductor rau n channel MOSFETs, thiab zoo ib yam rau p channel li. Lub rooj vag yog ua los ntawm cov hlau thiab sib cais los ntawm qhov chaw thiab ntws siv cov hlau oxide. Qhov rwb thaiv tsev no ua rau lub zog siv tsawg thiab nws yog qhov zoo dua hauv MOSFET. Yog li MOSFET yog siv nyob rau hauv digital CMOS logic, qhov twg p- thiab n-channel MOSFETs yog siv los ua lub tsev thaiv kom txo tau lub zog noj.
Txawm hais tias lub tswv yim ntawm MOSFET tau npaj ntxov heev (hauv xyoo 1925), nws tau xyaum ua hauv xyoo 1959 ntawm Bell labs.
BJT vs MOSFET
1. BJT yog ib qho cuab yeej uas tau tsav tam sim no tab sis, MOSFET yog suav tias yog lub tshuab hluav taws xob tswj hluav taws xob.
2. Terminals ntawm BJT hu ua emitter, collector thiab base, whereas MOSFET yog ua los ntawm lub rooj vag, qhov chaw thiab ntws.
3. Hauv feem ntau ntawm cov ntawv thov tshiab, MOSFETs tau siv dua li BJTs.
4. MOSFET muaj ib tug complex qauv piv rau BJT
5. MOSFET muaj txiaj ntsig hauv kev siv hluav taws xob ntau dua li BJTs thiab yog li siv hauv CMOS logic.
