Izindima ezintathu ezibalulekile zama-MOSFET

I-MOSFET evame ukusetshenziswa izindima ezintathu ezinkulu amasekhethi okukhulisa, okukhiphayo okuhlala njalo kanye nokushintshwa kokushintsha.

 

1, isifunda sokukhulisa amandla

I-MOSFET ine-impedance ephezulu yokufaka, umsindo ophansi nezinye izici, ngakho-ke, imvamisa isetshenziswa njengokukhulisa izigaba eziningi zesiteji sokufaka samanje, njengakwi-transistor, ngokuya ngamasekethe okokufaka nokukhiphayo kwesiphetho esivamile sokhetho. ezahlukene, zingahlukaniswa zibe izifunda ezintathu zokukhishwa kwesifundaI-MOSFET, ngokulandelana, umthombo ovamile, ukuvuza komphakathi kanye nesango elivamile. Isibalo esilandelayo sibonisa isekethe yokukhulisa umthombo ovamile we-MOSFET, lapho i-Rg iyisivimbeli sesango, ukwehla kwamandla ka-Rs kwengezwe esangweni; I-Rd iyi-resistor yokudonsa, i-drain current iguqulelwa ku-voltage yokudonsa, okuthinta i-amplification multiplier Au; I-Rs iyisivimbeli somthombo, esihlinzeka nge-voltage echema yesango; I-C3 iyi-bypass capacitor, esusa ukuncishiswa kwesiginali ye-AC ngama-Rs.

 

 

2, isifunda somthombo samanje

Umthombo wamanje oqhubekayo usetshenziswa kabanzi ekuhlolweni kwe-metrological, njengoba kukhonjisiwe esithombeni esingezansi, wakhiwe ikakhulukaziI-MOSFETisekethe yamanje yomthombo wamanje, engasetshenziswa njengenqubo yesikali yokuhlela amamitha kagesi we-magneto-electric. Njengoba i-MOSFET iyidivayisi yokulawula uhlobo lwe-voltage, isango layo cishe alithathi okwamanje, i-impedance yokufaka iphezulu kakhulu. Uma ukukhishwa kwamanje okukhulu okungaguquki kufiswa ukuze kuthuthukiswe ukunemba, inhlanganisela yomthombo wereferensi nesiqhanisi singasetshenziswa ukuze kutholwe umphumela oyifunayo.

 

3, isifunda sokushintsha

Indima ebaluleke kakhulu ye-MOSFET indima yokushintsha. Ukushintsha, izilawuli eziningi zomthwalo we-elekthronikhi, ukushintsha ukunikezwa kwamandla, njll. Isici esibaluleke kakhulu seshubhu ye-MOS izici zokushintsha kokuhle,I-NMOS, I-Vgs inkulu kunenani elithile elizoqhutshwa, elisebenza esimweni somthombo osekelwe, okungukuthi, okuthiwa i-low-end drive, inqobo nje uma i-voltage yesango ye-4V noma i-10V ingaba. Ku-PMOS, ngakolunye uhlangothi, ama-Vgs angaphansi kwenani elithile azoqhuba, okusebenza esimweni lapho umthombo usekelwe ku-VCC, okungukuthi, idrayivu ephezulu. Nakuba i-PMOS ingasetshenziswa kalula njengomshayeli oseqophelweni eliphezulu, i-NMOS ivamise ukusetshenziswa kubashayeli abasezingeni eliphezulu ngenxa yokumelana okuphezulu, intengo ephezulu, kanye nezinhlobo ezimbalwa zokushintshwa.

 

Ngaphezu kwezindima ezintathu eziyinhloko ezishiwo ngenhla, ama-MOSFET angasetshenziswa futhi njengezinqamuleli eziguquguqukayo ukuze abone izinto eziphikisana nokulawulwa kwamandla kagesi, futhi abe nezinhlelo eziningi zokusebenza.