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

For the amplifier circuit shown, R_S = 560 Ω, and R_L = 5.6 Ω.

For amp 1: R_i1 = 120 Ω, A₁= 5, R_o1 = 12 Ω.

For amp 2: R_i2 = 22 Ω, A₂= 15, R_o2 = 82 Ω.

For amp 3: R_i3 = 15 Ω, A₃= 10, R_o3 = 47 Ω.

For amp 4: R_i4 = 15 Ω, A₄= 15, R_o4 = 1 Ω.

Find the gain, G = v_o/v_i.

Answer