TDA2030 stereo amplifier circuit

This is a TDA2030 stereo amplifier circuit. It is a special project.

Because it is an OCL type amplifier.

Which provide power driver of 14 watts/channel at load 4 ohms.

So, it is suitable for beginners thought will build the electroacoustics to listen to yourself.

This project use IC of The SGS company number TDA2030.

Which SGS said that TDA2030 is a power amplifier IC in 5 pins form.

The Setting circuit on a class AB power amplifier to the output of the high harmonic distortion and low crossover.

They are ready, shock output protection, and the temperature is too high, complemented within the integrated circuit.

TDA2030 Stereo Amplifier OCL circuit diagram


As we listen to the sound quality nice. We turn the volume fully to several hours. The IC is not hot. Or just warm. so, suitable for beginners to build this circuit to listen with yourself.

Technical Specifications of IC-TDA2030

  • Maximum voltage supply used of +/- 18VDC.
  • Begin working at a minimal voltage of +/- 6VDC.
  • Power driver output 14 watts at 4 ohms and 9 watts at 8 ohms.
  • The maximum current of 900mA.
  • Frequency response range 10HZ-140KHz at -3dB.

How this circuit works

In the circuit, the figure is a single channel amplifier. You will see that have very few parts. Both pin 1 and pin 2 of IC-TDA2030 input.

The pin 1 is non-inverting input and pin 2 is inverting input. Then input of power amplifier comes to C1 into pin 1 of IC.

  • The R3 determines the input impedance of the IC.
  • Pin 3 is -VCC leg or negative voltage, and pin 5 is a +Vcc or positive voltage.
  • Four capacitors C3, C4, C5, and C6 are bypass filter voltage +Vcc and -Vcc.
  • R1 as acts adjust the gain of IC with a negative feedback form. If R1 has higher resistance. Then, the gain rate of IC rises up as well.
  • The R4 and C7 are protectors a oscillated high frequency.

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How to build

First of all, you need to have all components list below.

Parts you will need

MONO form
IC1: TDA2030 18W hi-fi amplifier and 35W driver
D1, D2: 1N4007, 1000V 1A diodes
D3-D6: 1N5402, 200V 3A diodes

C1: 1uF 50V Electrolytic
C2: 22uF 16V Electrolytic
C3, C6: 100uF 25V Electrolytic
C4, C5: 0.1uF 50V Mylar
C7: 0.18uf 50 Mylar
C8, C9 1000uF 25V Electrolytic

0.25W Resistors tolerance: 5%
R1, R3: 24K
R2: 680Ω
R4: 1Ω

PCB, Heatsink, etc.

Note: You may buy components at electronics stores here.

Then make a PCB as figure 2. Next solder all components on PCB as Figure 3.

pcb-layout-stereo-amplifier OCL TDA2030
Copper PCB layout of  TDA2030 stereo amplfier 

component layout 14w stereo-amplifier ocl using tda2030
Components layout 

You need to put all parts correctly on PCB. Even You need to be careful putting the polarity of the electrolytic capacitors and Diodes right ways.

Full wave rectifier diodes

In the component layout, use both full wave rectifier diode that has three lead. For positive has K A K
And negative has A K A lead.  It may be an old part.   So you can apply two diodes connection as below circuit diagram.

full wave rectifier diodes

How to install TDA2030

The IC is the final sequence. You should install with a heat sink first. Then, Solder it on PCB. Because of if soldering IC first. The Holes between the ICs and the heat sink may be mismatched.

When all things are complete. Then, connect the speakers to the output. And connect the ACV of transformer current at least of 2A, ACV 12V CT 12V or 15V CT 15V, One or the other to the power connector terminal.

More idea about TDA2030 stereo


Our amplifiers are ready to test. We use a finger, touch input on both. It will noise of the hum out of the speakers. That sound is good. Then, use a good quality tone controls. To test the complete sound again.

Cr: CEW kit

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I always try to make Electronics Learning Easy.

This Post Has 12 Comments

  1. What are “aka” and “kak” coded parts near 1000uf capacitor? Are they rectifier diodes?

    Yours Sincerely…

  2. C8 should be at least 1000µF. C8=C9. C3 and C6(100µF) are useless as long as C8 and C9 are ten times greater(they are in parallel).

  3. can i use 12 0 12 1A transformer??

    1. no u can not use ….

  4. hi there and have a good time .
    i made a circuit with tda 2003 . sound is ok but there is some noise like hummm.
    i used a trafo 12v 3,5 A & a cap 6800 in power supply , shielded wires in preamp , star earthing in box .
    please send me some words to resolve this problem . thanks .

  5. What does AKA and KAK stand for? Are yhey those unknown components, which say the reader not to build it, cause the circuit is not tested? 🙂

  6. saludos amigo si le funcionó el circuito lo realicé pero se que es lo que va o cual componente usar en KAK y AKA? Me ayudas con eso

  7. Where are the components list? Thanks

  8. cathode anode cathode-KAK
    anode cathode anode_ AKA

  9. how can i connect this to a car battery, i need a centre point for the ground

    1. Hi,
      If you want one 12V battery to this circuit you need the DC to DC converter circuit. It requires +21V/ 0V/ -21V supply.

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