Design of lm386 audio amplifier circuit. Circuit diagram of the lm386 based audio amplifier is shown in fig. The lm386 is a type of operational amplifier op amp.
Circuit b will give a gain around 50.
A suitable resistor should be used for proper working of mic you can look up to. In the circuit diagram the amplifier is shown with the respective pin. Lm386 audio amplifier circuit with pcb it was my first mini audio amplifier. Functional block diagram of lm386.
