Basic LM386 audio amplifier schematic

Posted on Jul 14, 2012

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

Basic LM386 audio amplifier schematic
Click here to download the full size of the above Circuit.

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.

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