SCHEMATIC DIAGRAM

                                                          Schematic Diagram of Electronic Stethoscope

•      CONDENSER MICROPHONE:

           ~ As a sensor that will give the signal of counting  vibration heart beats.

•      OPERATIONAL  AMPLIFIER (Non-Inverting):

           ~This op-amp will amplify higher signal input that came from the voltage of heart beat to

             the circuit voltage comparator to get the output.

•      VOLTAGE COMPARATOR:

           ~Interface with high level logic with voltage comparator it is to maximize the input that came

             from op-amp.

•      ARDUINO:

         ~ This is the microcontroller board that is used to run the software program of arduino when

            it attached  to the power supply with 5 volt maximum.