RESISTANCE-CAPACITANCE COUPLING

IT IS THE MOST COMMONLY USED COUPLING IN DIRECTS DEVICE AMPLIFIERS, AS IT IS THE LEAST EXPENSIVE, IT HAS A SATISFACTORY FREQUENCY RESPONSE.

IN THIS METHOD:- SIGNAL DEVELOPED ACROSS COLLECTOR RESISTOR OF EACH STAGE IS COUPLED THROUGH CAPACITOR INTO BASE OF NEXT STAGE.

THE COUPLING CAPACITOR ISOLATES THE D.C CONDITION OF ONE STAGE FROM THE FOLLOWING STAGE.

THE AMPLIFIERS USING THIS COUPLING SCHENE ARE CALLED R-C COUPLED AMPLIFIERS.