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试题名称:模拟电子线路一、回答下列问题 1.分别画出NPN型晶体三极管共发射极和共基极连接时的输出特性曲线,并说明它们之间的区别。 2.NPN型晶体三极管工作在饱和区和放大区时,基极电流中各成分及其大小有何变化? 3.若将共发-共基连接的组合管看成为一个等效三极管。已知组合管中的两个晶体三极管有相同的参数r_(bb)’、r_(b’e)、g_m(r_(ce)和r_(b’c)可忽略),试求等效三极管的β和g_m。
Title: analog electronic circuit First, answer the following questions 1. Draw the output characteristics of NPN transistor emitter and common base connection, and explain the difference between them. 2.NPN type transistor works in the saturation region and the amplification area, the base current of the various components and the size of what changes? 3. If the co-occurrence - the base connection of the composite tube as an equivalent transistor. It is known that the two transistors in the combinational transistor have the same parameters r_ (bb) ’, r_ (b’e), g_m (r_ (ce) and r_ (b’c) negligible) β and g_m.