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DESPRE TEHNOLOGIE SI ELECTRONICA-DIY
Timp de citit: < 1 minutPolarizarea unui tranzistor presupune realizarea unui circuit astfel incat tranzistorul sa functioneze de obicei in polarizare directa si la anumiti parametrii. Pentru aceasta jonctiunea BE (baza-emitor) trebuie polarizata direct iar jonctiunea CB (colector-baza) sa fie polarizata invers.
Timp de citit: < 1 minutTranzistorul bipolar (in engleza: bipolar junction transistor, BJT) este un dispozitiv semiconductor cu doua jonctiuni in succesiune NPN sau PNP. Cele trei zone se numesc emitor (E), baza (B), colector (C). Se foloseste in circuitele electronice atat digitale cat si analogice, de obicei pentru a amplifica sau transmite un semnal electric.