Maudindo atatu akuluakulu a MOSFET

MOSFET yomwe imagwiritsidwa ntchito kwambiri ndi maudindo atatu akuluakulu ndi mabwalo okulitsa, kutulutsa kosalekeza komanso kusintha kosintha.

 

1, kukulitsa dera

MOSFET ili ndi kulowetsedwa kwakukulu, phokoso lotsika ndi mawonekedwe ena, chifukwa chake, nthawi zambiri amagwiritsidwa ntchito ngati kukulitsa magawo angapo a gawo lapano lolowera, monga momwe zimakhalira ndi transistor, malinga ndi zolowetsa ndi zotulutsa za mathero wamba a chisankho. osiyana, akhoza kugawidwa m'mayiko atatu a kumaliseche dera laMOSFET, motero, gwero wamba, kutayikira pagulu ndi chipata wamba. Chithunzi chotsatirachi chikuwonetsa dera lokulitsa gwero la MOSFET, momwe Rg ndi chotchinga pachipata, kutsika kwamagetsi kwa Rs kumawonjezeredwa pachipata; Rd ndiye choletsa kukhetsa, kukhetsa kwapano kumasinthidwa kukhala voteji yakuda, zomwe zimakhudza kuchulukitsa kwa Au; Rs ndiye gwero lopingasa, lomwe limapereka mphamvu yotsatsira pachipata; C3 ndi bypass capacitor, kuchotsa kuchepetsedwa kwa chizindikiro cha AC ndi Rs.

 

 

2, gwero lapano

Magwero a nthawi zonse amagwiritsidwa ntchito kwambiri poyesa mayeso a metrological, monga momwe tawonetsera pachithunzi pansipa, makamaka amapangidwa ndiMOSFETnthawi zonse gwero gwero dera, amene angagwiritsidwe ntchito ngati magneto-magetsi mita ikukonzekera sikelo ndondomeko. Popeza MOSFET ndi chipangizo chowongolera chamtundu wamagetsi, chipata chake sichimatengera masiku ano, kulowetsedwa kolowera ndikokwera kwambiri. Ngati chiwongola dzanja chachikulu chokhazikika chikufunidwa kuti chikhale cholondola, kuphatikiza magwero ofananira ndi ofananitsa angagwiritsidwe ntchito kupeza zomwe mukufuna.

 

3, kuzungulira kozungulira

Udindo wofunikira kwambiri wa MOSFET ndikusintha. Kusintha, zambiri zamitundu yosiyanasiyana yamagetsi amagetsi, kusintha kwamagetsi, ndi zina zambiri. Chofunikira kwambiri pa chubu cha MOS ndi mawonekedwe osinthika a zabwino,NMOS, Vgs ndi yaikulu kuposa mtengo wina udzachititsa, ntchito pa nkhani ya gwero maziko, ndiko kuti, otchedwa otsika-mapeto pagalimoto, malinga ngati chipata voteji 4V kapena 10V kungakhale. Kwa PMOS, kumbali ina, Vgs zosakwana mtengo wina zidzachita, zomwe zimagwiranso ntchito pamene gwero lakhazikitsidwa ku VCC, mwachitsanzo, kuyendetsa galimoto. Ngakhale PMOS itha kugwiritsidwa ntchito ngati dalaivala wapamwamba kwambiri, NMOS nthawi zambiri imagwiritsidwa ntchito pamadalaivala apamwamba chifukwa chokana kwambiri, kukwera mtengo, ndi mitundu yochepa yosinthira.

 

Kuphatikiza pa maudindo akuluakulu atatu omwe atchulidwa pamwambapa, ma MOSFET atha kugwiritsidwanso ntchito ngati zopinga zosiyanasiyana kuti azindikire zopinga zoyendetsedwa ndi ma voltage, komanso kukhala ndi ntchito zambiri.