A Common-Collector Common-Emitter Cascade Stage ** Circuit Description ** * power supplies Vcc 1 0 DC +10V * input signal source Vs 8 0 AC 1V Rs 8 7 4k * CE stage (input stage) Cc1 6 7 1uF R1 1 6 100k R2 6 0 100k Q1 1 6 3 Q2N3904 Re1 3 0 4.3k * CC stage (output stage) Q2 2 3 4 Q2N3904 Re2 4 0 3.6k Rc 1 2 4k Ce 4 0 47uF Cc2 2 5 1uF * output load Rl 5 0 4k * * transistor model statement for 2N3904 .model Q2N3904 NPN (Is=6.734f Xti=3 Eg=1.11 Vaf=74.03 Bf=416.4 Ne=1.259 + Ise=6.734f Ikf=66.78m Xtb=1.5 Br=.7371 Nc=2 Isc=0 Ikr=0 Rc=1 + Cjc=3.638p Mjc=.3085 Vjc=.75 Fc=.5 Cje=4.493p Mje=.2593 Vje=.75 + Tr=239.5n Tf=301.2p Itf=.4 Vtf=4 Xtf=2 Rb=10) ** Analysis Requests ** .OP .AC DEC 10 1Hz 100MegHz ** Output Requests ** .PLOT AC VdB(5) .probe .end