Help with Building Amplifier

I built a Low power amplifier using TDA2822M .I used the test circuit 1 (Stereo) to build the amplifier with 2 speakers of 4 ohm 3 watt using aux to give input signals . Currently i am running it with 5v adapter and it works fine with less buzz sound when it is idle. I tried to change the power supply to 12v (IC supports max 15v).When i plug the device with 12v it become very much noisy .I am not very much good at electronics but when the amplifier get connected to device the noise begin is it because of different grounds getting combined . How should i fix the issue or should i need to provide any other further details just let me know

Thanks for providing a link to the data sheet!

The noise is likely coming from your power supply, and is there is a lot of ripple you may approach the 15V limit. You dont say what you are using for the PSU.

IS the "noise" mains hum, (a low hum or buzz) ?

what "device"?

I think we need a schematic - a sketch or photo will be a start.

I earlier used 5v 1amp adapter that we commonly use to charge mobile phones. After that i tried to upgrade it by using 12v 1A SMPS power supply that's where the noise started to begin

its more likely a hum sound even when i am using 5v PSU there was humming sound when it was not playing any audio(idle state) but it was not high and could be ignorable. But when i connected with 12v PSU the noise is heard even when i play the audio. It is also a high noise and a irritating one like buzzer.

Device meant by PC or mobile which i used to play audio files from using aux cable

As i said earlier i used the stereo circuit provided in data sheet

Stereo

I'd recommend trying something more contemporary. These (very!) old amplifier IC's generally had very poor PSRR performance.

There's a plethora of audio amp chips available; for efficiency's sake, I'd certainly look into modern class-D types.

I don't know much detail about this IC . In our workplace there was no speaker .In scrap i found this IC in old speaker set so i tried to build a speaker set to hear music that's all. But the audio misses all the bass so it doesn't have any low frequency sounds. If you are suggesting a new IC could you help me to build an amplifier that could also uses low frequencies . i think i need sub for that .What should i consider while building an amplifier

Please post a schematic of your actual build. In particular, what are the values of the capacitors you used at the outputs? Note that C4 and C5 form high-pass filters with both RL's.
The cutoff frequency of 470uF and an RL of 4R is 85Hz. That's pretty much no bass at all. Try 2200uF instead.

Did you use any input decoupling capacitors, and if so, what value?

But in all honesty, for the application you have in mind, I'd just get one of the many generic audio amplifier boards and hook it up. Why bother building something that is so easily available in all possible flavors?

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As i said i only used the schematic in the datasheet nothing else is used i shorted all the ground together.

no, i didn't add anything new but i think 10uf is used for decoupling purpose

I can provide the image of thing i build

Just a little bit of curiosity to learn how this device works . Can you guide me how should i build this device and what should have in my mind while building the amplifier

Ok, consider this:

And also this:

So you want me to replace 470uf with 2200 uf. But will that help with the buzz sound

I'd give that a try, yes. See if makes a difference.

Don't expect any magic from a tiny DIP IC. According to the datasheet, you can expect about half a watt per channel into 4 Ohm speakers. That can be plenty of noise provided the speakers are efficient.

Keep in mind that speakers affect frequency response quite dramatically too. Don't expect much bass from a tiny voice coil.

i'll give it a try . i ll think i should buy a audio amplifier as you recommended

That IC should do fine (do not expect hifi!).
Let us start with the 12V PSU.
Do you have any documentation?
Or a picture?
It might be a 12V 50Hz transformer with diode bridge and zero voltage regulation...

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By the way: why 12V?
I guess you will easily max it out at 5V with your 4 ohm speakers....

I thought it will enhance the audio quality/sound

Apparently not...

It is not a 50Hz transformer. So it should give a reasonable stable 12V.

Another topic. Did you use shielded wires on the input?

Did you mean the aux cable i used my old headphone cable and added dupont pin Female at end and connected to it using male pin in board

It is meant to have no bass. 3W speakers are too small to produce any bass. Usually they are 2 inch diameter. Not 10 inch...

Did that cable have wires on the outside and wires on the inside?

Now I see you also hear a buzzer...
Did you try a 1000 uF capacitor from + to gnd?

Can you post a pic of the other side of your amplifier (where the solder joints are)?