Question: 2(A) Calculate the Avt. Rif, Rut, R't for the circuit shown in Figure 3.The transistor used in the following circuit are identical and ha-2K0and

2(A) Calculate the Avt. Rif, Rut, R't for the circuit shown in

2(A) Calculate the Avt. Rif, Rut, R't for the circuit shown in Figure 3.The transistor used in the following circuit are identical and ha-2K0and he-100.The values of circuit parameters are: R-150KN, R-120KO, Re-22K0. Re-1.5K02, R-2.2K0, C-C-0.1uF, R-5.6K and Vcc=+10V. [7 Marks] T +New Re Ret R 4 Re REL R www # 3", Figure 3 2(B) Prove that class B power amplifier eliminates the even harmonics. Also explain the main limitation of the class B power amplifier. [5 Marks] 3(A) Derive the As. R. Rot. R'or for the circuit shown in figure 4. For each transistor the h parameters, he and he are not equal. [7 Marks] Y $0 RR. Po. Rei G REL +-+23 V 0 +Vec T www. R Q R www. -Ver~-24V Figure 5 3 0 Figure 4 3(B) If the input voltage to the power amplifier of the following figure 5 is 8V RMS, calculate the DC power, Maximum AC power, Maximum efficiency and power dissipation in both transistors. [5 Marks] V R Rez 19 No. RE2 3/8

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