Lub luag haujlwm thiab lub xeev ua haujlwm ntawm triode

Shenzhen Shenchuang Hi-tech Electronics Co., Ltd (SChitec) yog lub tuam txhab ua haujlwm siab uas tshwj xeeb hauv xov tooj accessories ntau lawm thiab muag khoom. Peb cov khoom tseem ceeb muaj xws li kev mus ncig, chargers tsheb, USB cables, fais fab nyiaj hauv tuam txhab nyiaj thiab lwm yam khoom siv digital.Tag nrho cov khoom muaj kev nyab xeeb thiab txhim khu kev qha, nrog cov cim styles.products dhau daim ntawv pov thawj xws li CE, FCC, ROHS, UL, PSE, C-Tick, thiab lwm yam. , Yog tias koj txaus siab rau, koj tuaj yeem tiv tauj ceo@schitec.com ncaj qha. 

Nyob ruaj ntseg nrog SChitec

Lub luag haujlwm thiab lub xeev ua haujlwm ntawm triode

Khoom ua haujlwm

Lub transistor muaj cov nyhuv amplification tam sim no, uas yog qhov tseem ceeb ntawm triode uas tuaj yeem tswj tau ntau qhov kev hloov pauv hauv cov khoom siv tam sim no nrog me me ntawm kev hloov pauv hauv lub hauv paus tam sim no. Qhov no yog qhov yooj yim tshaj plaws thiab tseem ceeb ntawm lub triode. Peb xa mus rau qhov piv ntawm ΔIc / ΔIb raws li qhov tam sim no amplification yam ntawm lub transistor, denoted los ntawm lub cim " ". Qhov kev nthuav dav tam sim no yog tus nqi ruaj khov rau lub triode, tab sis lub hauv paus tam sim no hloov pauv thaum lub triode ua haujlwm.

Ua haujlwm raws li txoj cai

Cutoff xwm txheej

Thaum qhov hluav taws xob siv rau lub triode emitter hlws ris yog tsawg tshaj li qhov tig-on voltage ntawm PN hlws ris, lub hauv paus tam sim no yog xoom, lub collector tam sim no thiab lub emitter tam sim no yog xoom, thiab lub triode poob tam sim no amplification ntawm lub sij hawm no, thiab tus collector thiab emitter yog sib npaug. Nyob rau hauv lub xeev tawm ntawm lub hloov, peb hu rau lub transistor nyob rau hauv lub off state.

Magnified xeev

Thaum qhov hluav taws xob siv rau lub triode emitter junction yog ntau tshaj qhov tig-on voltage ntawm PN junction thiab yog nyob rau ntawm tus nqi tsim nyog, lub emitter hlws ris ntawm lub triode yog rau pem hauv ntej biased, thiab cov collector junction yog rov qab biased. Thaum lub sij hawm no, lub hauv paus tam sim no yog opposite rau lub collector. Qhov tam sim no ua raws li kev tswj kom ua rau lub triode kom muaj cov nyhuv amplification tam sim no nrog rau tam sim no amplification yam=ΔIc / ΔIb, thaum lub sij hawm lub transistor nyob rau hauv lub amplified lub xeev.

Saturated conduction

Thaum qhov hluav taws xob siv rau kev sib tshuam ntawm triode yog ntau dua qhov hluav taws xob conduction ntawm PN hlws ris, thiab thaum lub hauv paus tam sim no nce mus rau ib qho twg, cov khoom siv tam sim no tsis nce ntxiv nrog qhov nce ntawm lub hauv paus tam sim no, tab sis yog nyob rau ntawm ib qho twg, paub tseeb Tus nqi tsis hloov ntau nyob ze tus nqi. Lub sij hawm no, lub triode poob tam sim no amplification, qhov voltage ntawm lub collector thiab lub emitter yog me me, thiab lub collector thiab lub emitter yog sib npaug rau lub conduction lub xeev ntawm lub hloov. Lub xeev ntawm triode no yog hu ua saturation conduction state.

Raws li lub peev xwm ntawm txhua lub electrode thaum lub triode ua haujlwm, lub xeev ua haujlwm ntawm triode tuaj yeem raug cais tawm. Yog li ntawd, nyob rau hauv cov txheej txheem txij nkawm, cov neeg ua haujlwm kho hluav taws xob feem ntau yuav tsum tau siv lub tshuab multimeter los ntsuas qhov voltage ntawm txhua ceg ntawm triode, yog li txiav txim siab qhov kev ua haujlwm thiab kev ua haujlwm ntawm lub triode.