Dab tsi yog qhov voltage thaum lub transistor muab tua?

Kev txhais ntawm Stantor CutOff xeev
Lub xeev txiav tawm ntawm lub transistor, nyob rau hauv luv, yog lub xeev uas tus transistor yog yuav luag tsis yog coj los tsis raug coj los ua qhov xwm txheej tshwj xeeb. Lub xeev no feem ntau tshwm sim thaum lub hauv paus tam sim no yog xoom lossis tsis tshua muaj neeg me, ua rau yuav luag tsis muaj kev ntws tam sim no ntawm tus sau thiab emitter. Hauv Bjts (Bipolar transistors), qhov no feem ntau txhais tau tias ob qho chaw ua emctions, thaum muaj kev sib txuas lus (
Lub tswvyim ntawm kev txiav-tawm voltage
Qhov hluav taws xob uas ib qho kev sib txuas yog muab tua feem ntau yog hais txog qhov tsawg kawg volage yuav tsum nqa tus transistor mus rau hauv lub xeev. Qhov no feem pua hluav taws xob yuav sib txawv rau ntau hom transistors thiab kev ua haujlwm txawv. Rau bjts, kev txiav-tawm voltage yog mas cuam tshuam nrog lub voltage ntawm emitter thiab puag (VBE). Thaum Vbe tsawg dua lossis sib npaug nrog tus nqi tshwj xeeb (piv txwv li txiav-off voltage kittor. Rau tus fet, tshwj xeeb tshaj plaws tag nrho cov mosfet, cov hlais-tawm voltage yog ntau tshaj rau cov voltage ntawm lub rooj vag thiab qhov chaw (vgs). Thaum VGS tsawg dua li qhov ntsuas volfage (vt), tus transistor yog nyob rau hauv lub xeev txiav.
Muab xam thiab cuam tshuam rau cov ntsiab lus ntawm kev txiav-tawm voltage
For BJTs, the calculation formula for the cut-off voltage VCEsat is usually VCEsat=IC/ +VBE, where IC is the collector current, is the multiplication factor of the transistor, and VBE is the voltage between the emitter and base. Txawm li cas los xij, cov mis no tsuas yog siv rau kev tsom xam thiab kev suav tsim. Hauv kev xyaum, cov kev txiav tawm-off voltage kuj tseem cuam tshuam los ntawm ntau qhov kev tsim khoom ntawm cov transistors, ntsuas kub, thiab lwm yam hauv kev.
Rau cov menyuam mos, tshwj xeeb yog cov neeg txiav, nws txiav-tawm voltage yog feem ntau lub rooj voltage vt. Qhov ntsuas ntsuas hluav taws xob yuav tsum tau pib kho hauv cov channel ntawm Mosfet. Thaum VGS tsawg dua VT, channel yog pinched tawm los yog tsis muaj, thiab tus transistor yog nyob rau hauv lub xeev. Qhov ntau ntawm qhov pib voltage nyob ntawm cov yam xws li kev tsim khoom, doping txheej txheem, thiab tuab ntawm lub rooj vag oxide txheej ntawm Mosfet.
Daim ntawv thov ntawm kev txiav tawm cov hluav taws xob voltage hauv kev tsim puag ncig
Nkag siab thiab thov cov CutOff voltage ntawm cov transistors yog qhov tseem ceeb hauv Circuit Circuit. Los ntawm kev tswj hwm lub hauv paus lossis rooj vag voltage ntawm ib qho transistor, yog li hloov lub xeev tuaj yeem tswj tau qhov kev xaiv logic thiab ua tiav cov kev ua haujlwm ntawm Circuit Court. Piv txwv li, hauv cov kab ncig digital, cov transistors feem ntau siv los ua hloov cov khoom kis tau kom ua tiav kev kis teeb liab thiab kev tswj hwm los ntawm kev tswj hwm lawv thiab nyob rau lub xeev.
Tsis tas li ntawd, hauv kev sib tw ntawm kev sib tw, cov hlais-tawm voltage ntawm transistors tseem ua lub luag haujlwm tseem ceeb. Los ntawm kev kho cov txiav-tawm voltage ntawm lub transistor, kev ua haujlwm taw tes thiab nce ntawm Circuitor thiab tau txais ntawm Circuitor tau hloov pauv, yog li ua kom ua tau zoo ntawm Circuit Court. Piv txwv li, hauv lub tshuab txiav hluav taws xob, teeb tsa lub tshuab txiav hluav taws xob tsim nyog thaum lub teeb liab muaj zog thaum cov paib qhia ntawv yog loj.
https://www.trrsicemon.com/transistor/transistor-npn-d882-Sot-889.html