In the circuit of let VCC 5 12 V, V1 5 5 V, and R1 5 R2 5 R3 5 R4 5 10 kV. Moreover, let VEB1(on) 5 VBE2(on) 5 0.7 V, and VEC1(sat) 5 VCE2(sat) 5 0.1 V, and assume F1 and F2 are so large that we can...

In the circuit of let VCC 5 12 V, V1 5 5 V, and R1 5 R2 5 R3 5 R4 5 10 kV. Moreover, let VEB1(on) 5 VBE2(on) 5 0.7 V, and VEC1(sat) 5 VCE2(sat) 5 0.1 V, and assume F1 and F2 are so large that we can ignore the base currents as well as the voltage drop across R2 (but only in forward active operation!). (a) Find the BJTs’ operating points Q1 5 Q1(IC1, VEC1) and Q2 5 Q2(IC2, VCE2). (b) Repeat if R3 is removed altogether from the circuit.