论文部分内容阅读
晶体三极管发射极注入的少数载流子在达到集电极过程中,有一部分与基极的多数载流子复合,而形成横向基极电流,在基极上引起一电压降.基极电阻r_b指基极体电阻与引线电阻之和,由于复合地点不同电阻率也不同,因此r_b是一个非均匀的电阻,故有人称之为基极展开电阻. 基极电流在基极电阻上的降压将引起反馈作用,以致降低电压放大系数、电流放大系数及功率放大系
Transistor transistor emitter injection of minority carriers in the process of reaching the collector, a part of the base with the majority of carrier recombination, and the formation of the transverse base current, causing a base voltage drop base resistance r_b Base resistance and lead resistance and the complex, because of the different sites of different resistivity, so r_b is a non-uniform resistance, so it is called the base start resistance base current in the base resistance of the buck Cause feedback, so as to reduce the voltage amplification factor, current amplification factor and power amplification system