Chapter 12, Problem 12.4EP

(a) Consider the circuit shown in Figure $12.3(\text{ a )}\text{. Assume }{A}_1=100$ and $A_2=10.$ Determine the output signal-to-noise ratio in terms of the input signal-to-noise ratio. (b) Consider the circuit shown in Figure $12.3(\text{c}).$ Assume $A_1={10}^4,A_2=10,$ and $\beta =\mathrm{0.001.}$ Determine the output signal-to-noise ratio in terms of the input signal-to-noise ratio. (Ans. (a) $S_o/N_o=100\left(S_i/N_i\right)$ , (b) $S_o/N_o={10}^4\left(S_i/N_i\right))$