Chapter 12, Problem 12.13P

Consider the two feedback networks shown in Figures $\text{P}12.7(\text{a})$ and P12.7 (b). The 3 dB frequency of the amplifier $A_1$ is 100 Hz and the 3 dB frequency of the second amplifier $A_2$ is very large. The feedback transfer functions are ${\beta }_1=0.1126$ and ${\beta }_2=\mathrm{0.0245.}$ (a) Determine the 3 dB frequency of each closed-loop network. (b) What conclusion can be made as to the "better" closed-loop system?