Question
Calculate the gain, input, and output impedances of a voltage-series feedback amplifier having $A=-300, R_{i}=1.5 \mathrm{k} \Omega, R_{o}=50 \mathrm{k} \Omega$, and $\beta=-1 / 15$
Step 1
The formula for the gain with feedback is: Af = A / (1 + A * β) where A is the open-loop gain and β is the feedback factor. Plugging in the given values, we get: Af = -300 / (1 - 300 * (-1/15)) Af = -300 / (1 + 20) Af = -300 / 21 Now, let's find the input Show more…
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