Tiny audio amplifier using LM386

The Tiny Audio Amplifier kit is a good choice for battery operation.  It is based on LM386 IC.

Specifications

• Power supply – 6 – 12 VDC
• Output power – 1 W, 8 Ohm
• The quiescent power drain is only 24 mW when operating from 6 VDC
• Self-centering output quiescent voltage
• Onboard PRESET to adjust volume
• Terminal pins for connecting power supply, audio signal and speaker
• Power-On LED indicator
• ON/OFF PCB mounted slide switch for power supply
• Four mounting holes of 3.2 mm each
• PCB dimensions 44 mm x 44 mm

Schematic

Parts

Inputs – Outputs configuration