2.1 Amplifier TDA2050, C5198 & A1941

Components

1. 7×22KΩ resistor 1/4W.
2. 4×10KΩ resistor 1/4W.
3. 2×3.3KΩ resistor 1/4W.
4. 2×47KΩ resistor 1/4W.
5. 1×4.7KΩ resistor 1/4W.
6. 1×1.5KΩ resistor 1/4W.
7. 1×100KΩ resistor 1/4W.
8. 1×330KΩ resistor 1/4W.
9. 1×33Ω resistor 1/4W.
10. 1×470Ω resistor 1/4W.
11. 1×1KΩ resistor 1/4W.
12. 2×680Ω resistor 1/4W.
13. 2×2.2Ω resistor 1/2W.
14. 2×10Ω resistor 1/2W.
15. 2×100Ω resistor 1W.
16. 2×0.33Ω resistor 5W.
17. 2×Diode 1N4007.
18. 2×Transistor BC558B.
19. 2×Transistor BD139.
20. 1×Transistor BD140.
21. 1×Transistor C5198.
22. 1×Transistor A1941.
23. 2×Capacitor 100pF(101).
24. 2×Capacitor 470pF(471).
25. 1×Capacitor 47nF(473).
26. 4×Capacitor 0.1uF(104).
27. 1×L7812/ L7815 +V Regulator.
28. 1×L7912/ L7915 -V Regulator.
29. 1×Preset 20K.
30. 1×47uF capacitor 25V.
31. 2×10uF capacitor 50V.
32. 2×1uF capacitor 50V.
33. 2×22uF capacitor 25V.
34. 1×100uF capacitor 25V.
35. 2×4700uF capacitor 35V.
36. 4×Capacitor 0.47uF(474).
37. 1×Bridge Rectifier GBU808.
38. 1×Led 3 mm.
39. 1×4558D/ NE5532/ TL072 IC.
40. 1×3 pin connector base 2.54 mm.
41. 1×47K/ 100K Single turn Potentiometer.
42. 1×47K/ 100K Dual turn Potentiometer.
43. 2×IC TDA2050.

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.

Gerber File:- https://bit.ly/3KC8lov

PCB Layout & Schematic:- https://bit.ly/3ILDHZe

Lets Build This Amplifier

Hello Friends, In this post I make 2.1 amplifier, which can deliver up to 80 watt output for subwoofer and 25+25 Watt for output speakers at 4Ω. For this amplifier I use TDA2050A IC and C5198,A1941 Transistor. For designing my PCB, I used EasyEda online software. Then I export the Gerber file (which you can download). And then I go to www.pcbway.com 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.

Check Voltages:- Bias volt 0.5V to 0.7V. Check Speaker Output and Audio Input voltage. Here you get no voltages 0.00V. If you get same voltages, then connect preamplifier to input and connect speaker to output.

Power Supply:- Recommended transformer 18-0-18V 5A-6A.