Doorka MOSFETs ee wareegyada

MOSFET-yadadoor ka ciyaarawareegyada wareejintawaa in la xakameeyo wareegga shidda iyo daminta iyo beddelidda calaamadda.MOSFET-yada Waxa loo qaybin karaa laba qaybood: N-channel iyo P-channel.

In N-channel-kaMOSFETwareegga, biinka BEEP waa mid sare si uu awood ugu yeesho jawaab-celinta buzzer-ka, wuu hooseeyaa si loo damiyo buzzer.P-channelMOSFETsi loo xakameeyo sahayda korantada moduleka GPS ee shidan iyo daminta, GPS_PWR biinku wuu hooseeyaa marka la shido, moduleka GPS waa korontada caadiga ah, iyo sare si uu moduleka GPS-ka u damiyo.

P-channelMOSFETSubstrate-ka N-nooca Silicon ee gobolka P + wuxuu leeyahay laba: qulqulka iyo isha. Labadan tiirar midba midka kale ma aha, marka uu jiro koronto ku filan oo togan oo lagu daro isha marka la dejiyo, dusha sare ee N-nooca Silicon ee ka hooseeya albaabka wuxuu u soo bixi doonaa lakabka P-nooca ah, oo galaya kanaalka isku xira qulqulka iyo isha. . Beddelka danabka albaabka wuxuu beddelaa cufnaanta godadka kanaalka, sidaas darteed beddelidda caabbinta kanaalka. Tan waxa loo yaqaan transistor-ka saamaynta ku-kordhinta-channel-ka.

Tilmaamaha NMOS, Vgs ilaa iyo inta ka weyn qiimaha gaarka ah ayaa jiri doona, lagu dabaqi karo isha ku salaysan kiis wadista-dhamaadka hoose, waase haddii danabka albaabka 4V ama 10V ee khadka.

Sifooyinka PMOS, liddi ku ah NMOS, way shidmi doonaan ilaa inta Vgs ay ka yar tahay qiimo cayiman, waxayna ku habboon tahay in loo isticmaalo kiiska darawalnimada dhamaadka sare marka isha ay ku xiran tahay VCC. Si kastaba ha noqotee, iyadoo ay ugu wacan tahay tirada yar ee noocyada beddelka ah, iska caabbinta sarreeya iyo qiimaha sarreeya, inkasta oo PMOS si aad ah loogu isticmaali karo kiiska darawalnimada-dhamaadka sare, sidaas darteed darawalka sare, guud ahaan wali isticmaal NMOS.

Guud ahaan,MOSFET-yadawaxay leeyihiin impedance sare, fududeeya isku xidhka tooska ah ee wareegyada, oo aad bay u fududahay in la sameeyo wareegyo isku dhafan oo baaxad weyn.