Two-port amplifier model practice problems
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Read the Amplifier class notes.

For the amplifier circuit shown, R_S = 18 kΩ, and R_L = 100 Ω.

For amp 1: R_i1 = 68 kΩ, A₁= 10, R_o1 = 8.2 kΩ.

For amp 2: R_i2 = 1.5 kΩ, A₂= 15, R_o2 = 2.7 kΩ.

For amp 3: R_i3 = 3.3 kΩ, A₃= 5, R_o3 = 680 Ω.

Find the gain, G = v_o/v_i.

Answer