Yuav ua li cas txuas 2N2222 transistor?

1, Basic qauv ntawm 2N2222 transistor
Ua ntej, peb yuav tsum nkag siab txog cov qauv ntawm 2N2222 transistor. Raws li NPN transistor, nws muaj peb thaj tsam: ob thaj chaw P-hom semiconductor (xa mus rau hauv paus B thiab cov khoom siv C raws li) sandwiching N-hom semiconductor cheeb tsam (hu ua emitter E). Cov qauv no tso cai rau cov transistors kom nthuav dav tam sim no thiab ua raws li cov khoom hloov pauv.
2, Pin kev npaj thiab kev txheeb xyuas ntawm 2N2222 transistor
Nws yog ib qho tseem ceeb kom raug txheeb xyuas tus pins ntawm 2N2222 transistor ua ntej txuas nws. Feem ntau, tus pin kev npaj ntawm 2N2222 transistors ua raws qee cov qauv, qhov twg:
Lub emitter (E): feem ntau yog cim nrog tsab ntawv "E" los yog ib tug luv luv pin taw tes rau ib sab, yog lub ntsiab input davhlau ya nyob twg tam sim no nyob rau hauv ib tug transistor.
Lub hauv paus (B): Ib tus pin nyob nruab nrab ntawm lub emitter thiab cov khoom sau, sau nrog tsab ntawv "B" lossis nruab nrab ntev, siv los tswj kev ua haujlwm ntawm lub transistor.
Collector (C): feem ntau sau nrog tsab ntawv "C" lossis tus pin ntev tshaj plaws, nws yog lub ntsiab lus tawm ntawm qhov tam sim no hauv lub transistor.
3, Txoj kev sib txuas ntawm 2N2222 transistor
1. Amplification Circuit Court txuas
Nyob rau hauv amplification circuits, 2N2222 transistors feem ntau yog siv raws li cov emitter amplifiers. Txoj kev sib txuas yog raws li nram no:
Emission ncej (E): Ib qho kawg txuas rau hauv av (los yog lub zog tsis zoo) thiab cov teeb liab tawm tswv yim.
Base (B): Txuas nrog lub zog zoo los ntawm kev tsis sib haum xeeb thiab tau txais cov teeb liab tawm tswv yim. Lub siab tsis ncaj resistor yog siv los teeb tsa qhov chaw ua haujlwm ntawm lub transistor, kom ntseeg tau tias nws ua haujlwm hauv cheeb tsam amplification.
Collector (C): Txuas nruab nrab ntawm cov zis load thiab lub zog zoo. Cov teeb liab tso zis yog tawm ntawm lub collector thiab cov zis tawm mus rau lub voj voog tom ntej tom qab dhau los ntawm kev thauj khoom.
2. Hloov kev sib txuas ntawm lub voj voog
Hauv kev hloov hluav taws xob, 2N2222 transistors yog siv los ua hluav taws xob hloov hluav taws xob los tswj qhov qhib / tawm ntawm Circuit Court. Txoj kev sib txuas yog txawv me ntsis:
Emitter (E): txuas rau hauv av (los yog lub zog tsis zoo).
Base (B): Txuas nrog lub zog zoo los ntawm kev tswj cov teeb liab (xws li cov khoom tawm los ntawm microcontrollers) thiab tam sim no limiting resistors. Thaum lub teeb liab tswj yog nyob rau theem siab, lub transistor conducts; Thaum qhov hluav taws xob tsawg, lub transistor raug tua.
Collector (C): Txuas nruab nrab ntawm cov khoom tswj thiab cov khoom siv hluav taws xob zoo. Thaum lub transistor qhib, lub load yog powered; Thaum lub sijhawm kawg, lub load yog powered.
4, Daim ntawv thov piv txwv
1. Lub suab amplifier
Hauv lub suab amplifiers, 2N2222 transistors tuaj yeem tsim ib qho yooj yim emitter amplifier circuit rau amplifying suab signals. Los ntawm kev kho qhov tseem ceeb ntawm kev tsis sib haum xeeb thiab kev thauj khoom tsis kam, qhov nce thiab zaus teb cov yam ntxwv ntawm lub amplifier tuaj yeem ua kom zoo dua.
2. LED flashing Circuit Court
Los ntawm kev siv cov yam ntxwv hloov pauv ntawm 2N2222 transistor, ib qho yooj yim LED flashing Circuit Court tuaj yeem tsim. Los ntawm kev txuas lub timer lossis oscillator Circuit Court rau lub hauv paus ntawm lub transistor, lub flashing zaus thiab lub luag haujlwm ntawm lub voj voog ntawm LED tuaj yeem tswj tau.
3. Tsav tsav tsheb
Nyob rau hauv daim ntawv thov kev tswj lub cev muaj zog, 2N2222 transistors tuaj yeem siv los hloov cov relays lossis MOSFETs ncaj qha tsav lub zog qis. Los ntawm kev tswj lub hauv paus voltage ntawm lub transistor, qhov pib, nres, thiab pem hauv ntej / thim rov qab tswj lub cev muaj zog tuaj yeem ua tiav.
5, Kev ceev faj
Thaum txuas 2N2222 transistor, nws yog ib qho tseem ceeb uas yuav tsum tau ua tib zoo saib xyuas qhov tseeb thiab kev sib txuas ntawm tus pins kom tsis txhob muaj luv luv los yog rov qab sib txuas.
Xaiv cov kev tsis zoo ntawm cov resistors thiab load resistors raws li cov ntawv thov tshwj xeeb los xyuas kom meej tias cov transistor ua haujlwm hauv thaj chaw ua haujlwm tsim nyog.
Xav txog qhov teeb meem kub dissipation ntawm transistors, ntsuas kub dissipation yuav tsum tau muab coj los siv rau hauv kev siv hluav taws xob siab.

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