Description

The Kit use the LM386  I.C  to amplify the audio signal, a simple external circuit, the audio signal is amplified. Circuit is simple, less use of components, welding easy. Sound volume are good, low cost, widely used in small speakers and other equipment.

Electrical characteristics:
Operating voltage: DC 3 ~ 12V;
Driver Speaker: 0.5W-10W Speaker 1;

Circuit theory:
The main circuit LM386 audio amplifier chip and audio input adjustment circuit.
By potentiometer can adjust the size of the input audio signal, thereby controlling the size of the output audio outputs.

Note: the  mini amplifier board circuit is based on the LM386 I.C, the kit comes unassembled, you will need to solder the kit yourself.