Question: A differential amplifier is fed in a balanced or push-pull manner, and the source resistance in series with each base is R. Show that

A differential amplifier is fed in a balanced or push-pull manner, and the source resistance in series with each base is R. Show that a mismatch AR, between the values of the two source resistances gives rise to an input offset voltage of approximately (1/2B)AR,/[1+(g_R)/B].

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