Problem Statement: Design a small-signal voltage amplifier using BJT's that meets the following specifications: 1) Voltage gain of 50 or more 2) Minimum input resistance of 15 kΩ 3) Output resistance less than 100 Ω 4) Maximum unclipped output of 2V peak-to-peak 5) Power supply voltage of 9 V 6) Lower current drain from supply voltage
Hint: You may use a multi-stage small-signal amplifier to achieve desirable input resistance, voltage gain, output resisntace, etc. A common-emitter amplifier with an emitter resistance RE, but without an emitter by-pass capacitor CE is good for high input resistance, common-emitter amplifier using an emitter bypass capacitor is good for high voltage gain, and the use of an emitter follower results in a low output resistance.