Consider the two feedback networks shown in Figures P12.7(a) and P12.7(b). The \(3 \mathrm{~dB}\) frequency of the amplifier \(A_{1}\) is \(100 \mathrm{~Hz}\) and the \(3 \mathrm{~dB}\) frequency of the second amplifier \(A_{2}\) is very large. The feedback transfer functions are \(\beta_{1}=0.1126\) and \(\beta_{2}=0.0245\).

(a) Determine the \(3 \mathrm{~dB}\) frequency of each closed-loop network.

(b) What conclusion can be made as to the "better" closed-loop system?

Transcribed Image Text:

A = 200 B (a) A = 10 Br A = 200 42=10 B (b) Figure P12.7