Mini Audio Amplifier

This project is a mini Audio Amplifier based on LM386 IC.

Description


The Mini Audio Amplifier project is a good choice for battery operated gadgets.  It is based on Texas instruments LM386 IC, provides high quality Audio.

Specifications

– Wide power supply input 6 to 12 VDC  
– 500 mW output @ 8 Ohms load
– Takes standard audio signal as input  
– Low quiescent current drain 4 mA IC  
– The quiescent power drain is only 24 mW when operating from 6 VDC  
– Onboard preset for volume adjust  
– Header connector for connecting power supply, audio signal and speaker  
– Onboard power indication LED  
– On/Off PCB mounted slide switch for power supply  
– Four mounting holes of 3.2 mm each  
– PCB dimensions 41 mm x 41 mm

 

Schematic


Parts List



 

PCB


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