Cov kauj ruam tseem ceeb ntawm MOSFET Xaiv

Niaj hnub no, nrog rau kev loj hlob sai ntawm kev tshawb fawb thiab thev naus laus zis, semiconductors tau siv ntau thiab ntau qhov kev lag luam, uas yogMOSFET Nws kuj tseem suav hais tias yog ib qho khoom siv semiconductor heev, cov kauj ruam tom ntej yog kom nkag siab qhov txawv ntawm cov yam ntxwv ntawm lub zog bipolar siv lead ua transistor thiab cov zis hluav taws xob MOSFET.

1, txoj kev ua haujlwm

MOSFET yog cov haujlwm uas yuav tsum tau ua los txhawb cov kev khiav hauj lwm voltage, Circuit Court daim duab piav qhia kuj yooj yim, txhawb lub zog ntawm me me; lub hwj chim siv lead ua transistor yog lub zog ntws los txhawb qhov kev tsim qauv yog qhov nyuaj, los txhawb cov kev qhia tshwj xeeb ntawm kev xaiv nyuaj rau kev txhawb nqa cov lus qhia yuav ua rau lub zog hloov pauv tag nrho.

2, tag nrho hloov ceev ntawm lub hwj chim mov

MOSFET cuam tshuam los ntawm qhov kub thiab txias me me, lub zog hloov hluav taws xob hloov hluav taws xob tuaj yeem ua kom ntseeg tau tias ntau tshaj 150KHz; hwj chim siv lead ua transistor muaj tsawg heev pub dawb lub sij hawm txwv nws lub hwj chim mov hloov ceev, tab sis nws cov zis hwj chim feem ntau tsis ntau tshaj 50KHz.

3, Chaw ua haujlwm nyab xeeb

Lub zog MOSFET tsis muaj lub hauv paus thib ob, thiab thaj chaw ua haujlwm nyab xeeb yog dav; fais fab siv lead ua transistor muaj qhov xwm txheej thib ob, uas txwv qhov chaw ua haujlwm nyab xeeb.

4, Hluav taws xob cov neeg xyuas pib ua hauj lwm yuav tsum tau ua hauj lwm voltage

Hwj chimMOSFET belongs rau hom high voltage, conduction ua hauj lwm yuav tsum tau ua hauj lwm voltage yog siab dua, muaj ib tug zoo kub coefficient; lub hwj chim siv lead ua transistor tsis muaj teeb meem ntau npaum li cas cov nyiaj tiv thaiv kev ua hauj lwm yuav tsum tau ua hauj lwm voltage, hluav taws xob conductor ua hauj lwm yuav tsum tau ua hauj lwm voltage yog qis dua, thiab muaj ib tug tsis zoo kub coefficient.

5, lub zog siab tshaj plaws

Fais fab MOSFET nyob rau hauv lub switching fais fab mov Circuit Court fais fab mov Circuit Court fais fab mov Circuit Court raws li lub hwj chim mov hloov, nyob rau hauv lub lag luam thiab ruaj khov ua hauj lwm nyob rau hauv nruab nrab, lub siab tshaj plaws lub hwj chim txaus yog qis dua; thiab lub zog siv lead ua transistor hauv kev ua haujlwm thiab kev ua haujlwm ruaj khov hauv nruab nrab, lub zog siab tshaj plaws yog siab dua.

6 、 Tus nqi khoom

Tus nqi ntawm lub zog MOSFET yog me ntsis siab dua; tus nqi ntawm lub hwj chim siv lead ua triode yog me ntsis qis.

7 、 Cov nyhuv nkag

Hwj chim MOSFET tsis muaj kev nkag mus; hwj chim siv lead ua transistor muaj cov nyhuv nkag.

8 、 Hloov poob

MOSFET hloov pauv tsis zoo; hwj chim siv lead ua transistor hloov poob yog qhov loj.

Tsis tas li ntawd, feem ntau ntawm lub zog MOSFET kev sib xyaw ua ke ntawm kev poob siab absorbing diode, thaum lub zog bipolar siv lead ua transistor yuav luag tsis muaj kev sib xyaw ua ke ntawm kev poob siab absorbing diode.MOSFET poob siab absorbing diode kuj tuaj yeem yog cov hlau nplaum thoob ntiaj teb rau kev hloov hluav taws xob circuits hlau nplaum coils muab lub hwj chim ntawm lub kaum ntse ntse. ntawm lub zog khiav kev nyab xeeb channel. Field effect tube nyob rau hauv lub poob siab absorbing diode nyob rau hauv tag nrho cov txheej txheem ntawm tig tawm nrog lub dav diode raws li lub hav zoov ntawm reverse rov qab tam sim no ntws, nyob rau hauv lub sij hawm no lub diode ntawm ib sab tes coj mus rau lub ntws - qhov chaw ncej zoo nruab nrab ntawm ib tug ntau yam. nce nyob rau hauv cov kev xav tau ntawm kev khiav hauj lwm voltage, ntawm qhov tod tes, thiab rov qab rov qab tam sim no ntws.