Two-port amplifier model practice problems
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Read the Amplifier class notes.
For the amplifier circuit shown, RS = 680 Ω, and RL = 1 Ω.
For amp 1: Ri1 = 330 Ω, A1= 10, Ro1 = 27 Ω.
For amp 2: Ri2 = 39 Ω, A2= 5, Ro2 = 27 Ω.
For amp 3: Ri3 = 68 Ω, A3= 10, Ro3 = 47 Ω.
For amp 4: Ri4 = 47 Ω, A4= 20, Ro4 = 1.2 Ω.

Find the gain, G = vo/vi.