晶体管在脉冲电路中应用时总是要利用到它的特性曲线的整个区域——饱和区、工作(放大)区和截止区.这时晶体管就应该看成是一个强非线性的元件,电路中脉冲振荡过程的分析比较复杂,通常我们都采用分区线性化的方法来进行设计和分析.当晶体管外在饱和状态或是截止状态时,它并不具有放大特性 Transistor in the pulse circuit is always used to take advantage of the entire area of ​​its characteristic curve - saturation, work (amplification) and the cut-off area. Then the transistor should be seen as a strong nonlinear components, the circuit Analysis of the pulse oscillation process is more complex, usually we use the method of partition linearization to design and analysis. When the transistor external saturation or off state, it does not have the amplification characteristics