A designer, having examined the situation described in

Chapter 6, Problem 6.144

(choose chapter or problem)

A designer, having examined the situation described in 6.142 and estimating the available gain to be approximately \(-36.6 \mathrm{~V} / \mathrm{V}\), wants to explore the possibility of improvement by reducing the loading of the source by the amplifier input. As an experiment, the designer varies the resistance levels by a factor of approximately \(3: R_{1}\) to \(82 \mathrm{k} \Omega\), \(R_{2} \text { to } 47 \mathrm{k} \Omega \text {, }\) \(R_{E} \text { to } 7.2 \mathrm{k} \Omega \text {, }\) and \(R_{C} \text { to } 12 \mathrm{k} \Omega\) (standard values of 5%-tolerance resistors). With \(V_{C C}=15 \mathrm{~V}, R_{\mathrm{sig}}=2 \mathrm{k} \Omega, R_{L}=2 k \Omega\), and \(\beta=100\), what does the gain become? Comment.