Exercise 3.13 Biasing in an FM transmitter circuit


An answer:

IC = βfe IB IB = V C 0.6 R2 V C = V CC R3 (IC + IB) IC = βfe V CC R3 ICβfe+1 βfe 0.6 R2 = βfe V CC 0.6 R2 + (βfe + 1)R3 3mA