Manyan ayyuka guda uku na MOSFETs

MOSFET da aka saba amfani da shi manyan ayyuka uku sune da'irar haɓakawa, fitarwa na yau da kullun da juyawa.

1, da'irar haɓakawa

MOSFET yana da babban shigar da shigarwa, ƙaramar amo da sauran halaye, sabili da haka, yawanci ana amfani da shi azaman haɓaka matakai masu yawa na matakin shigarwa na yanzu, kamar yadda yake tare da transistor, bisa ga hanyoyin shigarwa da fitarwa na gama gari gama gari na zaɓi. na daban-daban, za a iya raba uku jihohi na fitarwa kewaye daMOSFET, bi da bi, tushen gama gari, zubewar jama'a da ƙofar gama gari. Hoton da ke gaba yana nuna da'irar ƙarawa ta MOSFET gama gari, wanda Rg shine mai tsayayyar ƙofar, ana ƙara raguwar ƙarfin lantarki na Rs zuwa ƙofar; Rd shine magudanar ruwa, ana juyar da magudanar ruwa zuwa magudanar wutar lantarki, yana shafar haɓakar haɓakawa Au; Rs shine tushen resistor, yana ba da wutar lantarki ga ƙofar; C3 shine capacitor na kewayawa, yana kawar da attenuation na siginar AC ta Rs.

2, da'ira mai tushe na yanzu

Ana amfani da tushen daɗaɗɗen halin yanzu sosai a gwajin awo, kamar yadda aka nuna a hoton da ke ƙasa, galibi ya ƙunshiMOSFETmadawwamin tushen da'ira na yanzu, wanda za'a iya amfani dashi azaman tsarin daidaita sikelin na'urar magneto-lantarki. Tunda MOSFET na'urar sarrafa nau'in wutar lantarki ce, ƙofarta kusan ba ta ɗaukar halin yanzu, ƙarfin shigarwar yana da girma sosai. Idan ana son babban fitarwa na yau da kullun don inganta daidaito, ana iya amfani da haɗin tushen tunani da kwatance don samun tasirin da ake so.

3, da'irar sauyawa

Mafi mahimmancin aikin MOSFET shine rawar canzawa. Canjawa, mafi yawan nau'ikan sarrafa nauyin lantarki daban-daban, canza canjin wutar lantarki, da sauransu.NMOS, Vgs ya fi wani ƙimar da za ta gudanar, wanda ya dace da yanayin tushen tushen, wato, abin da ake kira ƙananan ƙarancin, muddin ƙarfin ƙofar 4V ko 10V zai iya zama. Ga PMOS, a gefe guda, Vgs ƙasa da takamaiman ƙima za ta gudanar, wanda ya shafi shari'ar lokacin da tushen tushen zuwa VCC, watau high end drive. Kodayake ana iya amfani da PMOS a matsayin babban direba na ƙarshe, ana amfani da NMOS a cikin manyan direbobi saboda tsayin daka, farashi mai girma, da nau'ikan maye gurbin.

Baya ga manyan ayyuka guda uku da aka ambata a sama, MOSFETs kuma za'a iya amfani da su azaman masu jujjuyawar canji don gane resistors masu sarrafa wutar lantarki, kuma suna da aikace-aikace da yawa.