Babban sigogi na MOSFETs da kwatanta tare da triodes

Filin Effect Transistor wanda aka gaje shi azamanMOSFET.Akwai manyan iri biyu: junction filin sakamako shambura da karfe-oxide semiconductor filin sakamako shambura. MOSFET kuma an san shi da transistor unipolar tare da yawancin dillalai da ke da hannu a cikin tafiyar aiki. Na'urorin semiconductor ne masu sarrafa wutar lantarki. Saboda yawan juriyar shigarsa, ƙaramar amo, ƙarancin amfani da wutar lantarki, da sauran halaye, wanda hakan ya sa ya zama mai fafatawa mai ƙarfi ga transistor na bipolar da wutar lantarki.

I. Babban sigogi na MOSFET

1, DC sigogi

Za'a iya ayyana magudanar ruwan magudanar jikewa a matsayin magudanar ruwan da ke daidai da lokacin da wutar lantarki tsakanin kofa da tushe ya yi daidai da sifili kuma ƙarfin da ke tsakanin magudanar ruwa da tushen ya fi ƙarfin fiɗa.

Tsoka-kashe ƙarfin lantarki UP: UGS da ake buƙata don rage ID zuwa ƙaramin halin yanzu lokacin da UDS ta tabbata;

Kunna wutar lantarki UT: Ana buƙatar UGS don kawo ID zuwa takamaiman ƙima lokacin da UDS ta tabbata.

2. AC Parameters

Karancin mitar transconductance gm: Yana bayyana tasirin sarrafa kofa da ƙarfin wutan tushe akan magudanar ruwa.

Inter-pole capacitance: ƙarfin da ke tsakanin na'urorin lantarki guda uku na MOSFET, ƙananan ƙimar, mafi kyawun aikin.

3. Iyakance sigogi

Magudanar ruwa, ƙarfin rushewar tushe: lokacin da magudanar ruwa ya tashi da ƙarfi, zai haifar da rugujewar dusar ƙanƙara lokacin UDS.

Ƙofar rushewar wutar lantarki: tasirin filin junction bututu aiki na yau da kullun, kofa da tushe tsakanin mahadar PN a cikin yanayin juye juye, halin yanzu yana da girma don samar da lalacewa.

II. HalayenMOSFETs

MOSFET yana da aikin haɓakawa kuma yana iya ƙirƙirar da'irar haɓakawa. Idan aka kwatanta da triode, yana da halaye masu zuwa.

(1) MOSFET na'urar sarrafa wutar lantarki ce, kuma UGS ke sarrafa yuwuwar;

(2) Na yanzu a shigar da MOSFET yana da ƙanƙanta sosai, don haka juriyar shigarsa yana da yawa;

(3) Kwanciyar zafinsa yana da kyau saboda yana amfani da yawancin masu ɗaukar nauyi don haɓakawa;

(4) Ƙimar ƙara ƙarfin ƙarfin lantarki na da'irar haɓakawa ta ƙanƙanta fiye da na ma'auni;

(5) Ya fi juriya ga radiation.

Na uku,MOSFET da kuma kwatanta transistor

(1) MOSFET Madogararsa, ƙofar, magudanar ruwa da tushen triode, tushe, sandar saita saiti yayi daidai da rawar irin wannan.

(2) MOSFET na'ura ce mai sarrafa wutar lantarki, ƙimar haɓaka ƙarami ne, ƙarfin haɓakawa ba shi da kyau; triode shine na'urar lantarki mai sarrafawa na yanzu, ƙarfin haɓakawa yana da ƙarfi.

(3) Ƙofar MOSFET ba ta ɗaukar halin yanzu; da triode aiki, tushe zai sha wani halin yanzu. Don haka, juriyar shigar da ƙofar MOSFET ya fi juriyar shigarwar triode.

(4) Tsarin Mosfoet yana da halartar Polyron, kuma tabo da tabo da kuma na Oligotron, da kuma maida hankali da sauran dalilai, sabili da haka, Mosufet yana da mafi kyawun kwanciyar hankali da juriya na radiation fiye da transistor. Ya kamata a zaɓi MOSFET lokacin da yanayin muhalli ya canza da yawa.

(5) Lokacin da MOSFET ta haɗa da tushen karfe da substrate, za a iya musayar tushen da magudanar ruwa kuma halayen ba su canza da yawa ba, yayin da aka yi musayar mai tattarawa da emitter na transistor, halayen sun bambanta da ƙimar β. an rage.

(6) Yawan amo na MOSFET karami ne.

(7) MOSFET da triode za a iya hada da iri-iri na amplifier da'irori da sauyawa da'irori, amma tsohon yana cinye ƙasa da ƙarfi, high thermal kwanciyar hankali, fadi da kewayon samar da wutar lantarki, don haka shi ne yadu amfani a cikin manyan-sikelin da matsananci-large- sikelin hadedde da'irori.

(8) Juriya na triode babba ne, kuma juriya na MOSFET ƙananan ne, don haka MOSFETs ana amfani da su azaman masu sauyawa tare da inganci mafi girma.