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Power Supply With Soft Start


1. 1×1KΩ resistor 1/4W.
2. 1×220Ω resistor 1W.
3. 1×1MΩ resistor 1W.
4. 4×10Ω resistor 5W.
5. 1×IN4007 Diode.
6. 1×12V 1W Zener Diode 1N4742A.
7. 1×2200uF capacitor 25V.
8. 1×1uF (105) 450V.
9. 2×0.1uF (104) 100V.
10. 1×Led 3 mm.
11. 10× 6.3 mm vertical PCB terminal.
12. 2×GBJ2510/ GBJ3510 Bridge Rectifier.
13. 6×10000uF capacitor 80V/ 100V.
14. 3×Fuse Socket.
15. 1×12V 30A 6 Pin Relay.

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.


How I Make This Power Supply

Hello Guys, In this Post I make a power supply for class AB and class D amplifier. This power supply have inbuilt soft starter. For this soft start section this power supply will on very smoothly. This power supply can handle up to 30A of current. You can use this Power supply for 2000-2500 Watts amplifier. For power capacitor, you place capacitors as your requirement (10000uF-15000uF 80V-150V).

Manufacturing PCB with PCBWay

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.

After 7 days I have received my PCB. You can see the PCB quality, it's awesome. I have ordered Yellow color 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.

How to Test this Power Supply



:- High Voltage Power Supply. This project is not for beginners, make sure you have enough knowledge for make this power supply. 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. After check voltages, short capacitors terminal by 1k 30W resistor (50-60 sec) and discharge all capacitors. To avoid electric shock.

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