The circuit is very simple to repeat and does not contain scarce or expensive parts. The amplifier is based on the LM386 chip. On Chinese sites you can buy ten or even twenty such microcircuits for fifty dollars - aliexpress
Parts List
- Chip LM386 - aliexpress.
- Resistor.
- Capacitor.
- DIP socket for the microcircuit (possible without it).
- Terminal blocks.
- Bread board.
Amplifier Features
The LM386 chip is a low-voltage amplifier with low current consumption and a power supply range from 5 to 12 V. The gain is in the range of 20-200. Output power – 0.5 W.
Circuit and assembly of an amplifier on an LM386 chip
The circuit is assembled on a breadboard with a large number of holes. The terminals are sealed together with solder or a piece of mounting wire. Even with this installation, the amplifier has very small dimensions, which is a big advantage of this design.
Pinout of the LM386 chip
The amplifier does not need adjustment and works immediately. You can watch the test video below.
