TDA7052 2 Watt Audio Amplifier

31,580

88

20

Introduction: TDA7052 2 Watt Audio Amplifier

About: Hi. I am interested in electronics, robotics, RC and coding.

In this instructables,I will show you how to make 2 watt audio amplifier.It can give a output of 2 watt. The heart of this circuit is the IC TDA7052. It is a IC with 8 pins. This circuit can be operated with only 6 Volt.This is the easiest mono amp which uses less parts.I hope you would like it.

Step 1: Things You Will Need

The things you will need are:
1. 1 TDA7052 IC: You’ll find this IC online and
electronic stores. About this IC.

2.2 capacitors of 220µF of any volt, 100nF ceramic

capacitor (you don’t need the capacitors if you’re using batteries).

3.A 4.7 k volume control (potentiometer) and,.

4.1 inch x 1 inch Vero board: You can use Perf board,

too.

5. Some Wires.

6. Batteries.

7. 3.5 mm headphone jack.

Step 2: Making the Circuit

Here is the circuit of the amplifier.I made it on a Vero board and soldered it.If you don’t know how to solder then visit this page.I used the 8 pin base(socket) for safety of my IC. In the picture you see I cut the connection between the IC’s pins. In the picture I didn’t use the capacitor because I used batteries, but if you want to adapter then use the capacitors. I taped those wires in the picture with the Vero board for easiness. This circuit will give an output of 1 to 2 watt.If you try this circuit on a breadboard (Project board) maybe it won’t work well. But if you solder it on Vero board or perfboard it will work great.

Step 3: Tasting the Circuit

Connect the jack to your iPod, mp3 or mobile phone and play audio. I hope it will work great.

Step 4: Making the Box

To know how to make the box,Please,visit this page

Step 5: DONE!!!!

Congratulation! You have just maked a 2 watt audio
amplifier.

Have fun

1 Person Made This Project!

Recommendations

  • Tinkercad Student Design Contest

    Tinkercad Student Design Contest
  • Plastic Challenge

    Plastic Challenge
  • Organization Contest

    Organization Contest

20 Comments

0
JindřichV
JindřichV

11 months ago

I must say I am astonished how everyone copies the same design flaw over and over and no one seems to be brave enough to admit the error.
This circuit does not work, as I myself proved so many time by personal experience. You can try yourself that as you turn the potentiometer, sound gets distorted or disappears completely, while the IC is notably heating, producing no output.
The reason is that there must be ZERO DC CURRENT at the input. If this condition is not fulfilled, the two outputs go out of balance and DC current starts flowing through the speaker, which can be noted by watching its membrane. As you turn on the amplifier, the membrane raises (or deepens) significantly, then it returns about half way. The latter effect is caused by the thermal protection circuit. In the beginning the imbalance causes significant DC current to flow through the speaker and as a consequence the IC starts heating. After reaching the critical temperature, current is reduced by the protection circuit and keeps it at the reduced level.
It is a great mistake to use the NXP datasheet, copied all over the internet (including the NXP site itself) which is missing important details. Instead use UTC datasheet, which is correct (showing no DC connection to pin 2 and correctly showing coupling capacitor 0.47 uF between signal input and pin 2).

0
Laukik09
Laukik09

Reply 3 months ago

Please provide the correct circuit diagram.

0
jdanielfy
jdanielfy

7 years ago

Can i use 4,5-5 volts?
in the schematic it says +3 volts.
thanks

0
Iqbal Samin
Iqbal Samin

Reply 7 years ago on Introduction

Thank you for commenting. You may see the the datasheet. You can use 3 - 12 volt, I recommend you not to use more than 9 volt. Because the chip gets really hot.

0
JindřichV
JindřichV

Reply 11 months ago

The chip gets hot because the circuit is wrong :-) there is a serious flaw you didn't notice...

0
BillyA1
BillyA1

Reply 6 years ago on Introduction

beautiful project! using 9 volt the ic will give more power? i have to add something to get the amp working with a 9v battery?

thanks!

0
HamzaQayyum13

Hello, i am from Pakistan. Could you tell me what i do with Tda7052a cause volume control dosen't work

0
JindřichV
JindřichV

Reply 11 months ago

You are right, Hamza. This circuit is wrong. There must be decoupling capacitor between pin 2 and the potentiometer. Everybody who actually built this circuit must know that, This guy simply copied schema from the internet and never tried if the amplifier actually works. It can't because the circuit is wrong.

0
Iqbal Samin
Iqbal Samin

Reply 5 years ago

Hi!

Sorry for the late answer. The volume control was supposed to work very well! If it doesn't than check your circuit and you always have an option to control volume from the device you are using.

Regards

- Prithul

0
NileshD12
NileshD12

5 years ago

Can we use mic at audio input?

0
Iqbal Samin
Iqbal Samin

Reply 5 years ago

Hey Nilesh,

I'm glad you asked. You can use a microphone at the input. But you have to use a transistor at the input.

Greetings,

Prithul

0
DXJohnPaulXD
DXJohnPaulXD

6 years ago on Introduction

is there any substitutes for TDA7052?

can a LM386 IC do 3 watts? or 2 watts?

0
JoshuaS170
JoshuaS170

Reply 5 years ago

LM386 is a bit less than 1 Watt

0
AndrésB42
AndrésB42

5 years ago

It's a cool project, and uses very few external components. Great!!

0
alu6
alu6

5 years ago

can u show me the schematics if I am not using capacitors?

0
IbrahimS14
IbrahimS14

5 years ago

It will be work when i use a 6 watt adopter

0
Iqbal Samin
Iqbal Samin

6 years ago

Thnx for commenting john, but u cant use lm386 instead of tda7052, lm386 cant give 3 watt output, but u can try to bridge

0
Iqbal Samin
Iqbal Samin

7 years ago on Introduction

I am not an English man. If there is any mistake then please help me to solve it. Hope you would like this instructables.