Lub ntsiab parameter ntawm transistor
Nov 05, 2019| Nyob ruaj ntseg nrog SChitec
Lub ntsiab parameter ntawm transistor
Cov tsis tseem ceeb ntawm transistor yog tam sim no amplification yam, dissipated hwj chim, zaus yam ntxwv, collector siab tshaj plaws tam sim no, siab tshaj rov qab voltage, rov qab tam sim no, thiab lwm yam.
amplification yam
DC tam sim no amplification yam tseem ceeb, tseem hu ua quiescent tam sim no amplification factor lossis DC amplification yam, hais txog qhov piv ntawm cov transistor collector tam sim no IC rau lub hauv paus tam sim no IB thaum lub teeb liab tsis hloov pauv zoo li qub, thiab feem ntau qhia los ntawm hFE. los yog.
AC magnification
AC amplification yam, uas yog, AC tam sim no amplification yam thiab dynamic tam sim no amplification yam, yog qhov piv ntawm cov transistor collector tam sim no variation ΔIC rau lub hauv paus tam sim no variation ΔIB nyob rau hauv lub xeev AC, thiab feem ntau yog qhia los ntawm hfe los yog .
hFE los yog ob qho tib si sib txawv thiab zoo sib xws. Ob qhov parameter qhov tseem ceeb yog nyob ze ntawm qhov tsawg zaus thiab muaj qee qhov sib txawv ntawm cov zaus siab.
Dissipated zog
Lub zog dissipated tseem hu ua qhov siab tshaj plaws tso cai dissipated hwj chim PCM ntawm lub collector, thiab hais txog lub siab tshaj plaws collector dissipated hwj chim thaum lub transistor parameter hloov tsis pub tshaj tus nqi tso cai.
Lub zog dissipated yog ze ze rau qhov siab tshaj plaws kev sib txuas qhov kub ntawm lub transistor thiab qhov siab tshaj plaws collector tam sim no. Thaum siv lub tshuab hluav taws xob, nws qhov kev siv hluav taws xob tiag tiag yuav tsum tsis pub tshaj tus nqi PCM, txwv tsis pub lub transistor yuav puas vim overload.
Lub transistor muaj lub hwj chim dissipation PCM tsawg dua 1 W feem ntau hu ua lub zog me me, lub transistor muaj PCM sib npaug los yog ntau dua 1 W thiab tsawg dua 5 W yog hu ua lub nruab nrab fais fab transistor, thiab a transistor muaj PCM sib npaug los yog ntau dua 5 W yog hu ua lub zog siab transistor.
Thaum qhov kev khiav hauj lwm zaus ntawm tus yam ntxwv zaus fT transistor tshaj qhov kev txiav tawm zaus f los yog f, tus nqi ntawm qhov tam sim no amplification yam yuav txo qis raws li qhov zaus nce. Tus cwj pwm zaus yog qhov kev khiav hauj lwm zaus ntawm lub transistor thaum tus nqi ntawm raug txo mus rau 1.
Lub transistor uas nws tus yam ntxwv zaus fT yog tsawg dua los yog sib npaug rau 3 MHz feem ntau hu ua ib tug tsawg zaus raj, ib tug transistor muaj ib tug fT ntau tshaj los yog sib npaug rau 30 MHz yog hu ua ib tug high zaus raj, thiab ib tug transistor muaj ib tug fT ntau tshaj los yog sib npaug zos rau 30 MHz. fT ntau dua 3 MHz thiab tsawg dua 30 MHz raug xa mus rau qhov nruab nrab zaus raj.
Ntau zaus fM
Qhov siab tshaj plaws oscillation zaus yog qhov zaus sib xws rau lub zog nce ntawm lub transistor raug txo mus rau ib qho.
Feem ntau, qhov siab tshaj plaws oscillation zaus ntawm lub siab zaus transistor yog qis dua qhov feem ntau lub hauv paus cutoff zaus f , thiab tus yam ntxwv zaus fT yog siab tshaj qhov feem ntau lub hauv paus cutoff zaus f thiab qis dua li cov khoom sib sau cutoff zaus f .
Qhov siab tshaj plaws tam sim no
Qhov siab tshaj plaws collector tam sim no (ICM) yog qhov siab tshaj plaws tam sim no tso cai los ntawm cov khoom siv ntawm transistor. Thaum cov khoom siv tam sim no IC ntawm lub transistor tshaj ICM, tus nqi ntawm cov transistor thiab lwm yam tsis zoo yuav hloov pauv, cuam tshuam rau nws cov haujlwm ib txwm muaj thiab txawm tias muaj kev puas tsuaj.
Maximum rov qab voltage
Qhov siab tshaj plaws rov qab voltage yog qhov siab tshaj plaws kev khiav hauj lwm voltage tso cai rau lub transistor ua hauj lwm. Nws muaj xws li collector-emitter reverse breakdown voltage, collector-base reverse breakdown voltage, thiab emitter-base reverse breakdown voltage.