TRANSISTOR PHAN BIET CAC LOAI VA XAC DINH CHAN

+ki hieu A,B tran thuan C,D tran nguoc

+A,C la tran con suat nho lam viec tan so lon chan e luon o ben trai B,D la tran cong suat lon lam viec o tan so nho hon thu tu chan thuong la bce

+khi do dong ho van nang thi neu chan co dinh b la que den thi la loai npn (chan co dinh que len)