Consider the circuit in Figure P7.52. The resistor \(R_{S}\) is changed to \(500 \Omega\) and all other resistor values are increased by a factor of 10 . The transistor parameters are the same as listed in Problem 7.52. Determine the lower and upper \(-3 \mathrm{~dB}\) frequencies for the voltage gain magnitude and find the midband gain.

Data From Problem 7.52:-

For the common-emitter circuit in Figure P7.52, assume the emitter bypass capacitor \(C_{E}\) is very large, and the transistor parameters are: \(\beta_{o}=100\), \(V_{B E}(\) on \()=0.7 \mathrm{~V}, V_{A}=\infty, C_{\mu}=2 \mathrm{pF}\), and \(f_{T}=400 \mathrm{MHz}\). Determine the lower and upper \(3 \mathrm{~dB}\) frequencies for the small-signal voltage gain. Use the simplified hybrid- \(\pi\) model for the transistor.

Transcribed Image Text:

Vi +15 V R = 60 k CC = 0.1 F ww Rs = 2 k R = 5.5 kQ www RC= 4 +1 Figure P7.52 ww RE= 0.2 CE- 8