The circuit of Fig. P4.103 utilizes overload protection both for Q1 and Q2. Let VCC 5 2VEE 5 10 V, I1 5 I XXXXXXXXXX mA, and R1 5 R2 5 50 V. (a) Assuming negligible base currents and Is3 5 Is4 5 10...

The circuit of Fig. P4.103 utilizes overload protection both for Q1 and Q2. Let VCC 5 2VEE 5 10 V, I1 5 I2 5 0.25 mA, and R1 5 R2 5 50 V. (a) Assuming negligible base currents and Is3 5 Is4 5 10 fA, fi nd Is1 and Is2 so that IQ 5 0.1 mA under the constraint Is1 5 Is2. Assuming Fp 5 200 and VBEn(on) 5 VEBp(on) 5 0.7 V, give estimates for all collector currents as well as vO and the current in or out of the vI source for the following cases: