I have been looking for a decent stereo amplifier circuit diagram for quite a while. I am not a HiFi nerd, I simply needed to fabricate a straightforward stereo amplifier that could drive a few speakers for my desktop PC.

All the schematic graphs that I could discover appeared to include heaps of elusive parts or you needed to utilize it together with a pre-amplifier or some other amplifier arrange. It was continually something that influenced me to delay.

But recently I found this wonderful little chip called TEA2025B - EXTERNAL LINK . We just need a couple of capacitors to influence a better than average stereo speaker to out of it. It is so easy to construct that I set up it together on a stripboard in only a couple of hours.

The amplifier circuit diagram demonstrates a 2.5W * 2 stereo amplifier. We can likewise make a 5W mono amplifier out of it. There are numerous potential outcomes when you can influence such to a modest amplifier.

Thanks for any assistance.

Newer TDA series chips are available on Mouser and lots of others. Most of the reference/datasheet material for these chips include sample circuit diagrams.

I found with those older chips that a good power supply with good bypass was a must otherwise the chips weren't happy.

Maybe the newer chips are better? There are some nice class D designs out there as well. The chips you choose will all depend on your output power requirements, what THD and frequency response you can tolerate, the load you expect to drive, etc...  Lots of choices out there.