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TDA7265 & TDA7294 2 .1 Amplifier


1. 3×22KΩ resistor 1/4W.
2. 7×10KΩ resistor 1/4W.
3. 2×47KΩ resistor 1/4W.
4. 1×100KΩ resistor 1/4W.
5. 1×4.7KΩ resistor 1/4W.
6. 2×560Ω resistor 1/4W.
7. 1×680Ω resistor 1/4W.
8. 1×15KΩ resistor 1/4W.
9. 2×18KΩ resistor 1/4W.
10. 1×1KΩ resistor 1/4W.
11. 1×330KΩ resistor 1/4W.
12. 2×4.7Ω resistor 1/2W.
13. 1×5V Zener Diode 1N4733.
14. 8×Capacitor 0.1uF(104).
15. 1×Capacitor 0.047uF(473).
16. 1×Capacitor 0.47uF(474).
17. 1×Preset 20K.
18. 1×Transistor 2N5551.
19. 1×LED 3mm.
20. 2×10uF capacitor 25V.
21. 1×1uF capacitor 25V.
22. 2×22uF capacitor 25V.
23. 2×47uF capacitor 25V.
24. 1×3 pin connector base 2.54 mm.
25. 1×L7812 +V Regulator.
26. 1×L7912 -V Regulator.
27. 1×4558D/ NE5532/ TL072 IC.
28. 1×100K dual turn Potentiometer.
29. 1×100K single turn Potentiometer.
30. 1×IC TDA7265.
31. 1×IC TDA7294.
32. 3×2 Pin screw terminal.
33. 1×3 Pin screw terminal.
34. 1×Bridge Rectifier GBU808.
35. 2×4700uF capacitor 35V.

License:- ©Technical Mriganka. You can't use this PCB Layout and Gerber File for commercial purpose. You can use this PCB layout and Gerber file only for Educational and DIY projects.

PCB Layout & Schematic:-

Lets Build This Amplifier

Hello Friends, In this post I make 2.1 amplifier, which can deliver up to 90 watt output for subwoofer and 25+25 Watt for output speakers at 4Ω. For this amplifier I have used TDA7265 and TDA7294 IC. For designing my PCB, I used EasyEda online software. Then I export the Gerber file (which you can download). And then I go to for manufacturing my PCB. PCBWay are the largest PCB manufacturer in China. They offer Standard PCB, Advanced PCB, Rigid-Flex PCB, SMD-Stencil and PCB Assembly Service. Here you get, 100x100mm 2 Layer PCB only at $5, And processing time within 24 hour. And they distribute, worldwide. The more you order, the less price you have to pay.

You just need to upload the Gerber File, and select the quantity, color, silkscreen, thickness etc. Then select your country, and shipping method and then Pay. PCBWay will deliver your PCB within 7-10 days.

After 7 days I have received my PCB. You can see the PCB quality, it's awesome. I have ordered Yellow PCB. But you can choose your PCB color. PCBWay provide total 9 color solder mask - Green, Blue, Red, Purple, Black, White, Yellow, Matte Black and Matte Green. On PCBWay you can get 100x100mm 2 Layer PCB only at $5. Maximum size PCB you can get 500x1100mm. And maximum Layer is up to 14 Layers. And If you order PCB first time at PCBWay, then you get a $5 discount coupon. So upload your Gerber today and get best quality PCB.

Testing Method After Complete This Amplifier

Series light test:- After complete this board don't forget to series light test. When you will on this amplifier via series light, it glow for some time (1 - 2 sec). Then series light will turned off fully. If the series light will fully turned off, then check the voltages.

Power Supply:- Recommended transformer 18-0-18V 8A.

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