** Common-Emitter Amplifier circuit ** sensitivity analysis of the emitter current * Biasing circuit Rc 1 2 4k R1 1 3 80k R2 3 0 40k Re 4 5 3.3k Rs 7 6 2.5k RL 8 0 4k Vcc 1 0 dc 12V c1 6 3 1; Coupling capacitor at the input c2 4 5 1; Bypass capacitor parallel to Re c3 2 8 1; Coupling capacitor at the output Q1 2 3 4 my_npn_tr .model my_npn_tr npn(Is=1.8e-15 Bf=100) Vi 7 0 sin(0 10mv 1k) Vm 5 0 0; Used only for measurement purposed .options numdgt=8 .op *.tran .1ms 4ms 0ms .01ms .sens I(Vm) .probe .end