Ngowuphi umahluko phakathi kweMOSFETs kunye neTriodes xa zisetyenziswa njengotshintsho?

I-MOSFET kunye ne-Triode zizinto ezixhaphake kakhulu ze-elektroniki, zombini zinokusetyenziswa njengokutshintsha kwe-elektroniki, kodwa nakwizihlandlo ezininzi ukutshintshisa ukusetyenziswa kokutshintsha, njengokutshintsha ukusebenzisa,I-MOSFETkwaye i-Triode inezinto ezininzi ezifanayo, kukho iindawo ezahlukeneyo, ngoko ke ezimbini kufuneka zibe yindlela yokukhetha?

 

I-Triode inohlobo lweNPN kunye nohlobo lwe-PNP.MOSFET nayo ine-N-channel kunye ne-P-channel.Izikhonkwane ezintathu ze-MOSFET zisango G, i-drain D kunye ne-source S, kunye nezikhonkwane ezintathu ze-Triode ziyi-base B, umqokeleli C kunye ne-emitter E. Nguwuphi umahluko phakathi kweMOSFET kunye neTriode?

 

 

I-N-MOSFET kunye ne-NPN Triode esetyenziswa njengomgaqo wokutshintsha

 

(1) Indlela yokulawula eyahlukileyo

I-Triode luhlobo lolawulo lwangoku, kwaye i-MOSFET yinxalenye yolawulo lwamandla ombane, i-Triode kwiimfuno zamandla ombane kwicala lolawulo isezantsi noko, ngokubanzi i-0.4V ukuya kwi-0.6V okanye ngaphezulu inokubonwa i-Triode, ngokuguqula umda wesiseko. umxhasi wangoku unokutshintsha isiseko sangoku. I-MOSFET ilawulwa ngamandla ombane, i-voltage efunekayo ekuqhubeni idla ngokuba malunga ne-4V ukuya kwi-10V, kwaye xa i-saturation ifikelelwe, i-voltage efunekayo imalunga ne-6V ukuya kwi-10V. Kulawulo lwamathuba ombane asezantsi, ukusetyenziswa ngokubanzi kwe-Triode njengokutshintsha, okanye i-Triode njengolawulo lwe-buffer ye-MOSFET, efana ne-microcontrollers, i-DSP, i-PowerPC kunye nezinye iiprosesa ze-I / O i-port voltage iphantsi, kuphela yi-3.3V okanye i-2.5V. , ngokubanzi ayizukulawula ngokuthe ngqo iI-MOSFET, i-voltage ephantsi, i-MOSFET ayikwazi ukuqhuba okanye ukuchasana kwangaphakathi kokusetyenziswa okukhulu kwangaphakathi Kule meko, ulawulo lwe-Triode ludla ngokusetyenziswa.

 

(2) I-impedance yegalelo elihlukeneyo

I-impedance yegalelo ye-Triode incinci, i-impedance ye-MOSFET yegalelo inkulu, i-junction capacitance yahlukile, i-Triode ye-junction capacitance inkulu kune-MOSFET, isenzo ngokufanelekileyo kwi-MOSFET ukuba sikhawuleze kune-Triode;I-MOSFETekuzinzeni kokungcono, yi-conductor emininzi, ingxolo encinci, ukuzinza kwe-thermal kungcono.

Ukuchasana kwangaphakathi kwe-MOSFET kuncinci kakhulu, kwaye i-Triode's on-state voltage drop iphantse yangaguquguquki, kwiimeko ezincinci zangoku, ngokuqhelekileyo zisebenzisa i-Triode, kwaye isebenzise i-MOSFET nokuba ukuchasana kwangaphakathi kuncinci kakhulu, kodwa okwangoku kukhulu, ukuhla kwamandla ombane nako. inkulu kakhulu.