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.
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.
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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
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
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.
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.
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
TDA2030 Audio Amplifier OTL circuits | transistor boost
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