The scheme is very simple to repeat and does not contain scarce and expensive parts. The amplifier is based on the LM386 chip. On Chinese sites, you can buy ten, or even twenty, of these microcircuits for fifty dollars -
Parts List
- Chip LM386 - .
- Resistor.
- Capacitor.
- DIP socket for the chip (you can without it).
- Terminal blocks
- Bread board.
Amplifier features
The LM386 is a low-voltage amplifier with a low current consumption and a power range from 5 to 12 V. The gain is in the range of 20-200. The output power is 0.5 watts.
Scheme and assembly of the amplifier on the LM386 chip
The circuit is assembled on a breadboard with a large number of holes. The findings are soldered together by solder, or by a piece of mounting wire. Even with this installation, the amplifier has very small dimensions, which is a big plus of this design.
Pinout of the LM386 microcircuit
The amplifier does not need to be tuned and works immediately. You can watch the test video below.
