TDA2009 Amplifier stereo 10W | High Bridge 28 watts

This are TDA2009 Stereo | Bridge amplifiers. Do you want it? I know why you feel interested in this.

Imagine you and friends listen to the favorite music in a private room. It is a true paradise.

Because you have a quality Hi-Fi system like this. This is a class AB audio power amplifier. The greatest output power of 10W + 10W. And, it is suitable for 4 ohms loudspeaker.

TDA2009 Datasheet

The TDA2009A is class AB dual Hi-Fi Audio power amplifier. It assembled in Multiwatt package, specially designed for high-quality stereo application as Hi-Fi and music center.

We can see its shape here.

Found out TDA2009 Here

And We can see the TDA2009 pinout here.

You like feature circuit, right?

• DC power supply: 8V to 24V at 1A to 2A
• The output power rate.
  10W RMS/channel, 4 ohms load, 24V DC power supply.
  6W RMS/Chanel, 8 ohms load, 24V DC power supply.
  4W RMS/channel, 4 ohms load, 12V DC power supply.
• S/N ratio: more 75 dBA re. 10W output.
• Frequency response: 10Hz to 50kHz -3dB.
• 0.351% distortion at a frequency 1 kHz
• Gain: 36dB.
• Input: 100mV for full output.

Is it nice? Do you like it?

The working of the circuit

The circuit is very clear. Most circuit diagram is in the TDA2009 module.

Every component helps the circuit works well.

First of all, enter the power supply into the circuit. Then, feed the audio signal to the input. Both channels left and right is working the same.

• Both C1 and C2 are input coupling capacitors and block DC to input pin 8 and pin 1 non-inverting input.
• Also, C8 and C9 are the output coupling capacitors. To connect the strong signals to the speakers.
• And, C4 and C5 block DC from the feedback loop.
• These resistors R1/R2(and R3/R4) set the level of feedback. The gain is equal to 1+(R1/R2) = 68 or 37 dB.
• Then, capacitors and resistors C6/R5(and C7/R6) have a high-frequency load for stability If loudspeaker inductive reactance may be too over.
• And C10 and C11 improve power supply filtering.

Parts you will need

If you want to build this project. First, you should find or buy all the electronic components listed below.

IC1: TDA2009, 10 + 10W short circuit protected stereo amplifier

0.25W, tolerance: 5% Resistors

R1, R3: 1.2kΩ
R2, R4: 18Ω
R5, R6: 1Ω

Electrolytic Capacitors
C1, C2: 2.2μF 16V
C3: 22μF 25V
C4, C5: 470μF 25V or 220μF 25V
C8, C9: 2,200μF 25V
C11: 100μF 50V

C6, C7, C10: 0.1μF 50V Ceramic or Mylar capacitors

Others
SP1, SP2: Speaker 8Ω 10W
B1: Battery or other DC power supply of 8V to 32V

How to build it

You can assemble it onto a universal PCB. It is easy. If you want a PCB layout. I am sorry. I do not have it. But you may see the components layout below. It may be guidelines for you.

Note: We adapted to increase powerful sound with…

• TDA2822 stereo amplifier
• LM386 audio amplifier with PCB
• 20 watts Integrated Amplifier using TDA2005
• Mini 40-watt audio car amplifiers using HA13001
• 12V Car Audio Amplifier circuit 50 watts output

This is PCB layout of this circuit, notice: C-220uf = C-470uF

Caution of the circuit

Of course! this circuit uses the max supply voltage of 28V. Check the power supply voltage and polarity before connecting to the circuit.

If your circuit does not work.

• Please, back to check all external wiring.
• Make sure there are no shorts.
• Then, check all the component positions.
• Also, check all solder joints.
• And make sure there are no solder bridges.

What is more? Do you high loud at the output. We have a many ways to do. But this is a good for IC. Using Bridge mode with two TDA2009 on same power supply.

Look at below

TDA2009 bridge amplifier BCL 18W

This is TDA2009 bridge amplifier circuit BCL 18W,Supply volt = 23V 2A
The TDA2009 be 10 +10W STEREO AMPLIFIER integrated circuits interesting again the one number.

We try to bring do the circuit amplifies 18W sizes better or Power Amplifier BCL 18W by IC TDA2009. This circuit character model 18W Bridge amplifier the sound better model OTL amp.

We use power supply just one group be 23V only. Make good convenient.

When use 4 ohm loudspeakers. Will give the electric power about 18watt or 20Watt.

If you want to the system stereo as a result just build enhance again the circuit. Request have fun 18W Bridge amplifier TDA2009.

In fact, the necessary things. I tell you of all … but I feel better. If you are interested in learning TDA2009 Datasheet. It can improve you.

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Apichet Garaipoom

I love electronics. I have been learning about them through creating simple electronic circuits or small projects. And now I am also having my children do the same. Nevertheless, I hope you found the experiences we shared on this site useful and fulfilling.