Question

(b) Compute the voltage gain, input and output impedance for the following circuit if ß = 150 and VBEQ = 0.7 V, V1 = 26 mV. A

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*DC Analysis - capacitor open. to simplify ciocuir Find thevenin equivalent as base 24k2 Pin = 40x60 hotoo /th= 60 x 10. 6. Vco pocitom Shooted. small signal model DC Supply grounded کی I b 46. ww 5 Pth ra Bio je tolib v PE PL ll ri 그 let porollel eqFrom Fing Vib ib Vbaraiot. Pill+ B) ib. Res 5x ! © 0.8333 kl. 5+1 V b = pi rrit Ri (1+B) -3.8215+0.8333(1+150) B = 129.6498Torel input impedonce po 4+. Pa 4.4.20.2512= 24:2512 kr By KUL. No- ibratro we havei Rita Vio => = Vb ib R;! Voa Vorri tro -]To 20. Find output impedonce Vs 20 Vb a I b Rh mm rei Bibi & UTB) ib. I L R un Ro Heit - 3 Ro ko at v Node V a il R! --3-(1+8ü 2:-2.1193 i b 0.2916 -7.2508 Tb put in eq? ib value < pe = 3 + (1+) [ixo Ris 5x1 5+1 0.8333 Toz. I+ (150) ( 7.2508) 0.8333

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