Q. What are the applications of a R-C coupled amplifier.
The R-C coupled amplifiers have excellent audio fidelity over a wide range of frequency. Therefore, they are widely used as voltage amplifiers e.g. in the initial stages of public address system. If other type of coupling is employed in the initial stage, this result in frequency distortion, which may be amplified in next stages. However, because of poor impedance matching, R-C coupling is rarely used in the final stage.