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ICSK025A Precise DIY Kit 5V-12V LM386 Super MINI Amplifier Board
This DIY Kit uses the audio amplifier LM386 chip, a simple external circuit. The audio signal is amplified. Circuit is simple, less components used, welded easily. Sound volume are good, high cost, widely used in small speakers and other equipment.
1. Characteristics:
Operating voltage: DC 5 ~ 12V;
Driver Speaker: 0.5W-10W Speaker 1;
PCB Size: 36 * 39mm
2. 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.