Airplane Mode 54% 02:56 pm Answer this question The emitter-follower configuration appears in Fig. 5.36. The re equivalent model is substituted in Fig. 5.37. Determine the voltage gain A₁ = V given A⟫ Vo that Vcc 13.1 V, RB = 220 kN, RE = 3.3 kÔ, ro = 25 ks, and 8 = 102. Select the correct answer A 0.29897 B 0.99656 C 0.099656 D 0.69759 E 2.4914 Vi 01 FIG. 5.36 FIG. 5.37 Enter fer citi Satiating Mergairafest cecait is the sest setwork of Fig. 5.36 ΔΙ о ☐ Airplane Mode V₁ Vcc C₁ w RB B C Bre RB C₂ V E Zb RE RE Zo FIG. 5.36 Emitter-follower configuration. BI Ie= (ẞ+ 1)Ip + Vo FIG. 5.37 Substituting the re equivalent circuit into the ac equivalent network of Fig. 5.36. ப 55% 02:55 pm Airplane Mode 52% 5:03 pm Answer this question The common-base configuration shown in Fig. 5.42 is characterized as having a relatively low input and a high output impedance and a current gain less than 1. The voltage gain, however, can be quite large. The common-base re equivalent model substituted in Fig. 5.43. Determine the voltage gain Av given that VEE = 2 V, Vcc = 8 V, RE = 1 kN, Rc = 4.9 kN, r。 = ∞ N, ΚΩ, and B = 98. (Hint: see Example 5.8 page 278.) Vo = Vi Select the correct answer A 1102.5 B 73.5 C 980 D 245 E 490 IN RE Rc B VEE Vee FIG. 5.42 Common-base configuration. ale FIG. 5.43 Substituting the re equivalent circuit into the ac equivalent network of Fig. 5.44. Δ о ☐ Airplane Mode Z V Z RE E VER ФВ FIG. 5.42 Rc Vcc Common-base configuration. + w N RE + αι, C Rc V₂ Zo 52% 5:03 pm FIG. 5.43 Substituting the re equivalent circuit into the ac equivalent network of Fig. 5.44. Δ о ☐ Airplane Mode Answer this question 52% The collector feedback network of Fig. 5.45 employs a feedback path from collector to base to increase the stability of the system as discussed in Section 4.6. The re equivalent model is substituted in Fig. 5.46. Determine the voltage gain A given that Vcc = 8.9 V, RF = 180 kô, Rc = 2.7 kN, r。 = ∞ = Vo Vi 2, and B = 146. Select the correct answer A -21.8001 B-218.001 C-545.0024 D-152.6007 E-872.0039 C₁ Vec Re RF ОС B FIG. 5.45 Collector feedback configuration. R RF + Re 81 Bre FIG. 5.46 Δ о 5:03 pm ☐ Airplane Mode + ЭН B Vcc Rc RF H V C₂ C E FIG. 5.45 Collector feedback configuration. BRE + C Rc Vo BI Bre FIG. 5.46 Substituting the re equivalent circuit into the ac equivalent network of Fig. 5.45. Δ о 52% 5:03 pm ☐