in the design of an emitter of power transistors, the main problem is to attain good current amplification factor β for a given injection level.
本文讨论功率晶体管设计中设计发射极时所需考虑的两个问题。
based on the model, the variations of the electrical parameters such as the potential barrier, the anode junction voltage drop, and the current amplification factor are studied and discussed.