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5 Channel HI-FI Audio Amplifier LM3886

Components

1. 5×LM3886TF IC.
2. 10×1kΩ resistor 1/4W.
3. 15×22kΩ resistor 1/4W.
4. 5×10Ω resistor 1W.
5. 5×10Ω resistor 2W.
6. 5×0.1uF (104) capacitor 100V.
7. 5×22uF capacitor 63V.
8. 5×2.2uF capacitor 63V.
9. 5×6uH coil. (14Turn - 6.5 Drill Bit).
10. 5×2 pin connecter base 2.54 mm.
11. 5×2 pin screw terminal.
12. 3×6.3 mm vertical PCB terminal.

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.





Lets Build This Amplifier

Hello guys, in this post I make 5 channel amplifier, which can deliver up to 68 watt output per channel at 4Ω. For this amplifier I use LM3886 IC. This IC is especially designed for active studio monitor, for it's low noise distortion. And this IC best for singers. This IC have in-built short circuit protection and over voltage protection, So for reason tis IC is little bit expensive than other IC. I designed this PCB based on this IC, for make this amplifier you can download the required files.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 one week 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:- 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:- For get best performance of this amplifier, you use 20-0-20V 10A-12A Transformer. For Bridge rectifier you can use GBJ2510 Bridge Rectifier and 4 Pcs. 10000uF Capacitor.

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