Alternatively, it is much cheaper to buy a readymade module online for 99p and it works far better due to short tracks and SMD components. It can be used under battery operation and has a wide supply voltage range: 4V12V or 5V18V enabling us to use. The LM386 is a low voltage power amplifier IC designed for use in low voltage consumer applications. If you are constructing this circuit on breadboard, then it is better to keep all the wires short, otherwise, increasing the gain to 200 can introduce feedback noise. This circuit is applicable to power medium-sized speakers from a music player that can only drive earphones (lm386 headphone). The LM386, also known as JRC386 is one of the most used amplifiers integrated circuits, the reason is very simple, its versatility, low cost and consumption. The main advantage of this IC is its bass boost function with the addition of only two external components. LM386 Audio Amplifier Circuit With PCB circuit audio amplifier lm386 diagram mini ic pcb speaker power using input output wiring 7w gain eleccircuit 4w figure. The LM386 is a mono amplifier IC with a default fixed gain of 20, and may be set to 200 (gain = 200) after the addition of a 10 ♟ capacitor between pin 1 and pin 8. All the versions are available in dual in-line package (DIP), which is useful for hobby amplifier projects however, the LM386M-1 version is available in SO package, and the LM386MM-1 version is available in mini small outline package. There are three versions of this IC, LM386N-1, LM386N-3, LM386N-4, capable of providing power output of 0.125 W, 0.8 W, and 1 W respectively.

The LM386 is a low voltage audio amplifier IC manufactured by National Semiconductor.

Lm386 amplifier circuit