In a CE transistor,VBB supply can be varied from 0V to 5V.The transistor has β=250,RB=100KΩ,RC=1 KΩ and VCC=5.0V.Assume that when the transistor is saturated VCB=0,VBB=0.8V.Calculate the minimum base current for which transistor will reach saturation.Also calculate the input voltage when the transistor is switched on.


At saturation Vo =0 We know that , Vo = Vcc - IcRL

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