Imeko yesekethe yesicelo se-mosfet

Olona phawu lubalulekileyo lwemosfetiyatshintsha, ngoko inokusetyenziswa ngokubanzi kwiisekethe ezahlukeneyo ezifuna utshintsho lwe-elektroniki, njengokutshintsha izixhobo zombane kunye neesekethe zokuqhuba iimoto. Kule mihla, imeko yesekethe yesicelo se-mosfet:

1, izicelo zombane ophantsi

Xa usebenzisa i-5V unikezelo lwamandla, ukuba i-totem pole yemveli isakhiwo sisetyenziswa, ngenxa yokuhla kwamandla ombane we-transistor ibe kuphela malunga ne-0.7V, i-voltage yangempela ilayishwe kwisango yi-4.3V kuphela, ngeli xesha, ukuba sikhetha. i-mosfet ene-voltage ye-4.5V, isiphaluka sonke siya kuba nomngcipheko othile. Ingxaki efanayo iya kwenzeka xa usebenzisa i-3V okanye enye i-low-voltage power supply.

2, ukusetyenziswa kwamandla ombane abanzi

Kubomi bethu bemihla ngemihla, i-voltage esiyifakayo ayiloxabiso elimiselweyo, liya kuchaphazeleka lixesha okanye ezinye izinto. Esi siphumo siya kubangela ukuba isekethe ye-pwm ibonelele ngevolthi yokuqhuba engazinzanga kakhulu kwi-mosfet. Ke ukuze uvumele i-mos transistors ukuba isebenze ngokukhuselekileyo kumbane wesango eliphezulu, uninziiimosfetskule mihla inezixhobo zokulawula amandla ombane ezakhelweyo ezinciphisa umbane wesango. Ngeli xesha, xa i-voltage ye-drive enikeziweyo idlula i-voltage yomlawuli, inani elibalulekileyo lokusetyenziswa kwamandla amileyo kwenzeka. Kwangaxeshanye, ukuba i-voltage yesango incitshisiwe ngokulula kusetyenziswa umgaqo we-resistor voltage divider, i-voltage yegalelo iya kuba phezulu kwaye i-mosfet iya kusebenza kakuhle. Xa i-voltage yegalelo iyancitshiswa, i-voltage yesango ayanelanga, okukhokelela ekuqhutyweni okungaphelelanga kunye nokunyuka kokusetyenziswa kwamandla.