Circuit of power audio amplifier with tda2003 for 10 Watts power. TDA 2003 has a better performance than the tda2002 using the same configuration of pins. Additional characteristics relate to the tda2002, it demands few components external, easy assembly, it is a low-cost solution for an audio amplifier. A mounted amplifier with tda2003 presents protection against short of the pins with the ground.
The good of setting up an amplifier with tda2003 is that he is easy of being found at the market, even for who is far away from the great centers. Has the possibility to do to buy him/it integrated by the internet. The tda2003 can be supplied by batteries by a long period.
Description of the circuit of the amplifier of 10 watts simple source
It is treated of an assembly easy of being accomplished what is necessary, it is just a tda2003 and one more half dozen of components.
To facilitate the assembly, the circuit it counts with a printed circuit board.
Schematic of the amplifier with tda2003
Suggestion of printed circuit board for assembly of the amplifier with tda2003.
Part list to assemble the amplifier with IC TDA2003
Last Update: 07/29/2021 18:03
| Parts | Value | Description | Quantity |
| Capacitors | |||
| CX | 39nF/63V | Polyester capacitor | 1 |
| C1 | 2.2µF/16V | Electrolytic capacitor | 1 |
| C1A | 1 a 2.2µF/63V (Optional) | Polyester capacitor | 1 |
| C2, C6 | 470µF/25V | Electrolytic capacitor | 2 |
| C3 | 100nF (104) | Ceramic capacitor | 1 |
| C5 | 100nF/63V (104) | Polyester capacitor | 1 |
| C4 | 1000µF/25V | Electrolytic capacitor | 1 |
| C7 | 330pF | Ceramic capacitor | 1 |
| Semiconductors | |||
| IC1 | TDA2003 | Audio amplifier integrated circuit | 1 |
| Resistors 1/4W 5% | |||
| R1 | 220 | Red, red, brown, gold | 1 |
| R2 | 2.2 | Red, red, gold, gold | 1 |
| R3 | 1 Ohm / 1W | Brown, black, gold, gold | 1 |
| R4 | 56K | Green, blue, orange, orange, orange | 1 |
| RX | 39 | Orange, white, black, gold | 1 |
| Miscellaneous | |||
| CN1 | IN | Terminal block 2 pin 5.08 mm | 1 |
| CN2 | VCC | Terminal block 2 pin 5.08 mm | 1 |
| CN3 | OUT | Terminal block 2 pin 5.08 mm | 1 |
| Solder, Wires, PCB, case, power supply, heatsink, etc. | |||
Download the PDF files of this assembly. Updated files, now includes PDF, PNG and GERBER plate, plus 10×10 panel (4 plates)
Datasheet PDF ST Microelectronics
Datasheet PDF Contek Microelectronics
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C2: 39nF is not available here. Can I use 40nF?
Hi EJ B
Yes.
Dont we need to know resistors watts? How to buy them then? Or watts of resistor doesnt matter?
i’ve tried this one,with similar schematic of LM383,1/2 watts resistor will do,powered only by 12v/1Amps power transformer
i just want to know what is the input voltage of this amplifier?
12 -15 volts
Ahmad why tda2003 gets too hot at 12v is there anything wrong
Thanks you so much it’s really worked
i want to know the name of the software on which this is simulated (tda2003)?
where’s place potentiometers 10k
can i use 40ohms resistor for Rx, and a 40nF for the Cx?
Please refer for the datasheet
ya you can i did that
thank you so much, i enjoyed browsing, my student admired and enjoyed searching for their projects through this site.
where did i connect the volume control?
amplificador tda2003 Circuit of power audio amplifier with ic tda2003 for 10 Watt
Read more: Circuit of power audio amplifier with ic tda2003 for 10 Watt | Xtronic circuits and informations for electronic http://xtronic.org/circuit/amplifier/circuit-audio-amplifier-potency-tda2003/#ixzz3HAE3E1f3
of this cicuit?
Well, this one have an updated schematics, more detailed and with power supply for TDA 2002 and TDA2003 http://xtronic.org/circuit/amplifier/power-audio-amplifier-tda2002/ a udpdate note on top would a good idea. Regards
Thanks Wilfredo!
As i understand from schematic:
on the left side:1 In; 2 and 3 Ground
on the right side: RL +Speaker ;+ V in; Ground
Anyone assembled this one and thested with this values?
Regards
I did but no volume button…. It’s working though
i’m a little bit confused in this project, i don’t know wheres the “+” and “-” for the input voltage and for the input of sounds and the output of the speaker.. please help me.. what is the input voltage?
I have enjoyed myself browsing through this great circuit but if u can include the operation of the circuit