在图中所示电路中,已知V cc =12V,V EE =6V,恒流源电流I=1mA,R B =1kΩ,R c =20kΩ,R L =40kΩ;两只三极管特性完全相同,且β 1 =β 2 =100,r be1 =r be2 =2kΩ。 试求解:
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