How to DIY Mini Amplifier with HA1392 IC?

How to DIY a Mini Amplifier with the HA1392? Check out this article.

The HA1392 is an old IC with low operating current and decent sound quality. Here are the basic specs of this IC.

For complete details, refer to the official schematic and parameters (HA1392 datasheet). Draw the schematic in AD, choose the appropriate package based on the components you have, and prepare it for import into the PCB layout.

Position all components, with the final PCB dimensions set to 7x7.5 cm. Reserve 2.5 cm for the heatsink on the front side. The PCB itself can also be used for heat dissipation. If the intensity is high, you can add a larger heatsink to the bottom.

Use a PCB of the same size for the panel, and draw the schematic on it for decoration.

Here's how it looks in real life:

Solder the components.

Assemble the panel, including the top connectors.

Add a potentiometer.

Connect a 12V 1A power supply, and it will be operational. In actual use, it performs well with Sony brown-cone speakers for movies and music. It heats up moderately, and the current rarely exceeds 0.2A, making it quite powerful.