Q. Given a curve determine Vcc,Rc,and RB for fixed bias circuit.

Solution:

                                By the graph we have, for Ic=0

                                                                                V_CE=V_CC=20V

                                Also at V_CE=0

                                                                                I_C=V_CC/R_C

                                                                                R_C=V_CC/IC=20/10m=2kW

                                Then                                       I_B= (V_CC-V_BE)/R_B

                                Or                                          R_B= (Vcc-V_BE)/I_B

                                                                                    = (20-0.7)/25m

                                                                                    = 772k W.