Low voltage audio power amplifier - battery-operated power amplifier with internally set gain of 20, expandable to 200 with external components.
The LM386 is a low voltage audio power amplifier perfect for battery-operated projects. Let's build a simple audio amplifier circuit:
Audio Amplifyer Circuit
Audio Amplifyer Schematic
Connect an audio source (like a phone or MP3 player) to the input pins, and connect a speaker to the output. The LM386 will amplify the audio signal with a gain of 20 (or up to 200 with external components).