Want to share a audio amplifier DIY project with you! If you have any interests, then take some time reading this article

First you can watch the video before reading this post.

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 enough to power big speakers so I changed the IC to TDA2003 . I'm 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
• 220ohm resistor
• 2.2ohm resistor
• 39 nf
• 39ohm resistor
• 1000uf cap
• 2X 100nf
• 2X100uf
• 3 X connectors (see the photo)
• TDA2003(The most important part, you can buy it from http://www.kynix.com/Detail/777791/TDA2003A.html)
• 12v to 18 v adapter and make sure its 2A at least (prefer 3.5A)

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For the tools you will need:

• Soldering iron
• PCB
• Soldering wires

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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

BTW, you can either use a printed bored or a normal throw hole PCB.

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.!!!

That's all I want to share. If you have any questions or suggestion, please leave a comment and we can discuss it. Thanks for reading~

 

Interesting but the printed circuit board calls for vengeance to heaven.
I'm gonna do something like that

http://www.electronics-lab.com/project/high-performance-stereo-audio-amplifier-using-lm3886/

 

You can find kits, circuit boards, and assembled amps on ebay, newfrog.com, aliexpress, etc. I'm looking to get one to power my passive sub-woofer to take the load off of my main amp. Here's an amp kit, though it's rather low power. You can easily find bigger.
https://www.newfrog.com/p/12v-2x18w...-digital-audio-amplifier-diy-kits-180031.html

My avatar is my first synth from a parts kit, from a long time ago (but you can still get them from http://www.paia.com/)

 

TDA2003???? Omg feels like 1995 again )

Used to pimp friends’ car stereos with bridged pairs of 2003’s for each speaker - no PCB, just all the components placed directly on TDA’s pins ) How time flyes...