Ad Code

Subscribe Us

TDA7294 Bridge Amplifier



1. 2×TDA7294 IC.
2. 5×22kΩ resistor 1/4W.
3. 6×10kΩ resistor 1/4W.
4. 2×680Ω resistor 1/4W.
5. 1×1N4148 Zener Diode.
6. 4×22uF capacitor 50/ 63V.
7. 2×0.47uF (474) capacitor 50V.
8. 1×2 pin connecter base 2.54 mm.
9. 5×6.3 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.

PCB Layout & Schematic:-

Lets Build This Amplifier

Hello guys, in this post I make Bridge amplifier, which can deliver up to 200 watt output at 4Ω. For this amplifier I use TDA7294 IC. This IC is especially designed for active studio monitor, for it's low noise distortion. This IC have in-built short circuit protection, Very low distortion, Very low noise, Short circuit protection and also have Thermal shutdown. According to me this IC is best for low frequency. I designed this PCB based on this IC, for make this amplifier you can download the required files. For designing my PCB, I used Easy Eda 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 one week I have received my PCB. You can see the PCB quality, it's awesome. I have ordered Red 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 6A-8A Transformer. For Bridge rectifier you can use GBJ2510 Bridge Rectifier and 2 Pcs. 10000uF Capacitor.

Post a Comment