Pls I've seen this thread and i don't know how they get the answer
http://forum.allaboutcircuits.com/threads/another-transistor-circuit-problem.89348/
i think all available equations is 3 eqn,one at the input and two at the output
at i/p
Ib=(1-0.7)/120^3=2.5ua
and at the o/p
i assumed the transistor in the active region to apply the rule Ic=B*Ib,
then Ic=80*2.5u=200ua
1st eq
20=It*10^3+Vce
2nd eq
It : is the total current =Ic+Io
Vo=Io*10^3
then how to get the total current since Vce is unknown
http://forum.allaboutcircuits.com/threads/another-transistor-circuit-problem.89348/
i think all available equations is 3 eqn,one at the input and two at the output
at i/p
Ib=(1-0.7)/120^3=2.5ua
and at the o/p
i assumed the transistor in the active region to apply the rule Ic=B*Ib,
then Ic=80*2.5u=200ua
1st eq
20=It*10^3+Vce
2nd eq
It : is the total current =Ic+Io
Vo=Io*10^3
then how to get the total current since Vce is unknown