This discussion focuses on calculating the desired voltage gain of a common emitter (CE) transistor amplifier. The key formula used is Gain (AV) = rc / (re + r'e), where r'e is approximately 25Ω for a bias current (Ie) of 1mA. For a target voltage gain of 50, it is recommended to use two amplifier stages, each with gains of x10 and x5, respectively. The input and output impedances must also be considered, with specific values provided for resistors R1 and R2 to achieve the desired input impedance of 50K.
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NascentOxygen said:You should run your simulation a number of times, testing that it works satisfactorily with hfemax and hfemin, and (for multi-transistor circuits) all combinations.