Dab tsi yog qhov kev siv ntawm qhov tsis kam ntawm DC fais fab MOS raj GS?
Qhov tseeb muaj nuj nqi ntawm kev sib txuas ntawm qhov tsis kam ntawm DC fais fab MOS hlab GS nyob rau hauv lub tsav Circuit Court ntawm DC fais fab MOS hlab GS. Qhov kev tawm tsam no tuaj yeem muaj lossis tsis muaj. Feem ntau qhov tseem ceeb yog 5k thiab 10k, tab sis lub hom phiaj ntawm qhov resistor yog dab tsi?
Nrhiav DC MOS raj, hla G, thiab ntxiv voltage rau DS. Qhov tshwm sim yuav ua li cas? Yog hais tias lub input voltage tsuas yog ob peb kaum ntawm volts, lub teeb yog nyob rau thiab lub teeb raug hlawv.
Vim li cas MOS raj qhib tsis tau ntxiv lub teeb liab tsav tsheb? Qhov no yog vim hais tias muaj ib tug capacitance ntawm DG thiab GS thiab Cdg thiab Cgs nyob rau hauv lub raj. Yog li, qhov voltage thov ntawm DS tsub Cgs los ntawm Cdg. Incidentally, qhov voltage ntawm G ncej nce mus txog rau thaum MOS transistor ntawm DC fais fab mov yog qhib.
Yog li ntawd, thaum lub DC fais fab tsav Circuit Court tsis ua hauj lwm thiab tsis muaj paug Circuit Court, lub MOS raj ntawm DC fais fab mov yog tsis yooj yim, thiab thaum lub transformer yog siv los tsav, lub transformer winding muaj ib tug paug muaj nuj nqi, txawm tias tsis muaj DC. tsis kam yog ntxiv rau tus tsav tsheb, lub raj yuav tsis ua hluav taws xob. Hla. Cov ntsiab lus 1. Kev puas tsuaj ntawm hluav taws xob zoo li qub rau DC lub zog MOS (thov saib yog vim li cas: Vim tias qhov sib txuas capacitance ntawm qhov sib npaug U=Q / C me me, thaum qhov hluav taws xob siab, qhov me Q yuav kuj tsim kom muaj qhov hluav taws xob, thiab DC lub hwj chim MOS raj yuav puas ) 2. Muab kev kho kom ruaj.
Thaum qhov kev tsis sib haum xeeb raug txiav tawm, qhov hluav taws xob me me no tau txais txiaj ntsig zoo ntawm DC fais fab mov MOS (yog vim li cas: G ncej raug txiav, thaum muaj hluav taws xob siv rau DS chaw nres nkoj, Cgd raug them thiab G davhlau ya nyob twg voltage nce, uas tsis tuaj yeem ua tau zoo. muab tua) 3, Piav qhov loj ntawm cov resistor. Yog tias nws tsawg dhau, qhov tsav tam sim no thiab lub zog tsav yuav nce ntxiv. Yog tias nws loj dhau, qhov kev tawm tsam yuav nce ntxiv, thiab lub sijhawm tawm ntawm DC lub zog MOS raj yuav ntev dua.
