In the Art of Electronics, page 71, the author is discussing how to design an emitter follower circuit when it is driven by an ac-coupled signal.
At the input there is capacitor C1 (why is it needed if the input signal is already ac-coupled?). To select its capacitance, the author says "...if we assume that that the load this circuit will drive is large compared with the emitter resistor..."
However, since the load will be connected in parallel to RE, shouldn't the load be much smaller than RE, so as to have most of the current going through the load? Otherwise most of the current will flow into RE, since the load is parallel to it...
Thank you
At the input there is capacitor C1 (why is it needed if the input signal is already ac-coupled?). To select its capacitance, the author says "...if we assume that that the load this circuit will drive is large compared with the emitter resistor..."
However, since the load will be connected in parallel to RE, shouldn't the load be much smaller than RE, so as to have most of the current going through the load? Otherwise most of the current will flow into RE, since the load is parallel to it...
Thank you