This is not an ordinary project, but an attempt to make a PCB that is suitable for TDA2050 and LM1875 and has all the necessary circuitry on board - power supply, speaker protection, delayed turn-on and fast turn-off. This is achieved using the convenient uPC1237 IC.
TDA2050 and LM1875 are pin to pin compatible, the differences in their schematics are the values of a couple resistors and one capacitor. All this allows to make an universal circuit board, suitable for any of these two ICs.
|PCB with reversed inscription :)|
Later there will be a link for downloading project files.
Update: April 6, 2012
The amplifier is ready. Here some more pictures:
And here is the link for downloading project files: TDA2050.rar
Use it on your responsibility.