Consider the three-stage cascade feedback circuit in figure


Consider the three-stage cascade feedback circuit in Figure (a).

Each stage corresponds to the circuit in Figure (b), with transistor parameters: hFE = 180, VBE (on) = 0.7 V, and VA = ∞.

The source resistor is RS = 10 k Ω, and the load resistor is RL = 4 k Ω.

Determine the value of RF such that the closed-loop gain is Av = vo/vi = -80.

2461_Figure (a).jpg

2459_Figure (b).jpg

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Electrical Engineering: Consider the three-stage cascade feedback circuit in figure
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