For so long i wanted to make an audio amplifier to enjoy my music i used
the well know IC lm386 but it wasn't e enough to power big speakers so i changed the IC to TDA2003 . im going to show you now how to make a nice and powerful amplifier.
Step 1: Tools and Parts
for this project you will need the following parts:
10 uf cap
470 uf cap
3 X connectors (see the photo)
12v to 18 v adapter and make sure its 2A at least (prefer 3.5A)
for the tools you will need:
Step 2: Schematics
here is the chematics in case you couldnt find the 39nf (its hard to find) then you can go with 33nf cap and 47 ohm resistor
Step 3: Printed Bored
you can ether use a printed bored or a normal throw hole PCB i will provide better quality in a link later
Step 4: Bending the TDA2003 Pins
like you have seen in step3 the printed the holes will not match with the TDA2003 that's why you need to carefully bend them a little so they can be in the photo and then solder some left over parts to them (led pings/resistors...) you need to extend the legs so they don't broke (i broke my first tda2003)
Step 5: BE Careful&&success!!
If your are going with the PCB type don't rush things and always check again and again before powering so you don't end it with this.!!!
if the link of the discription you will find a link to all files