BJT vs SCR
Ob leeg BJT (Bipolar Junction Transistor) thiab SCR (Silicon Controlled Rectifier) yog cov khoom siv semiconductor nrog hloov P hom thiab N hom semiconductor txheej. Lawv siv nyob rau hauv ntau daim ntawv thov hloov vim muaj ntau yam xws li kev ua tau zoo, tus nqi qis, thiab qhov me me. Ob leeg ntawm lawv yog peb lub davhlau ya nyob twg, thiab lawv muab kev tswj hwm zoo ntawm tam sim no nrog rau kev tswj me me tam sim no. Ob qho khoom siv no muaj qhov zoo ntawm daim ntawv thov.
Bipolar Junction Transistor (BJT)
BJT yog hom transistor, thiab nws muaj ob lub 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. Muaj ob hom BJTs hu ua PNP thiab NPN.
Peb lub tshuab hluav taws xob txuas nrog peb qhov khoom siv hluav taws xob, thiab cov hlau lead hauv 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. Muaj rau nws tuaj yeem suav tau tias yog lub tshuab tsav tam sim no. BJT feem ntau yog siv hauv amplifier circuits.
Silicon Controlled Rectifier (SCR)
SCR yog hom thyristor, thiab siv dav hauv cov ntawv thov kho tam sim no. SCR yog ua los ntawm plaub alternating semiconductor txheej (nyob rau hauv daim ntawv ntawm P-N-P-N) thiab yog li ntawd muaj peb PN junctions. Hauv kev tshuaj xyuas, qhov no suav hais tias yog ib qho sib txuas ua ke ntawm BJTs (ib qho PNP thiab lwm yam hauv NPN teeb tsa). Sab nraud P thiab N hom semiconductor txheej yog hu ua anode thiab cathode feem. Electrode txuas rau sab hauv P hom semiconductor txheej yog hu ua ' rooj vag'.
Hauv kev ua haujlwm, SCR ua haujlwm thaum muab lub mem tes rau lub rooj vag. Nws ua haujlwm hauv 'on' lossis 'off' xeev. Thaum lub rooj vag tau tshwm sim nrog lub mem tes, SCR mus rau 'rau' lub xeev thiab txuas ntxiv mus kom txog thaum lub sijhawm tam sim no dhau los ua tsawg dua tus nqi pib hu ua 'tuav tam sim no'.
SCR yog lub cuab yeej hluav taws xob, thiab feem ntau nws siv rau hauv cov ntawv thov, qhov twg muaj qhov hluav taws xob siab thiab qhov hluav taws xob cuam tshuam. Daim ntawv thov SCR siv tshaj plaws yog tswj (rectifying) alternating currents.
In luv:
Qhov txawv ntawm BJT thiab SCR
1. BJT tsuas muaj peb txheej ntawm semiconductor, qhov SCR muaj plaub txheej ntawm lawv.
2. Peb lub terminals ntawm BJT hu ua emitter, collector, thiab base, whereas SCR muaj terminals hu ua anode, cathode, thiab rooj vag
3. SCR raug suav hais tias yog cov khub sib txuas sib txuas ntawm cov transistors hauv kev tshuaj xyuas.
