DIY Portable Power Supply (Variable) v1.0

Hello to dear friends and companions! In this video, we'll build a portable (pocket or mini) power supply with an adjustable output voltage range from 1.2 to 30 volts and a maximum output current of 3 amps. By following this video and the upcoming tutorials, you can build power supplies with features such as precise output voltage adjustment, output current adjustment, and other useful and practical capabilities you need, all at the lowest possible cost.
Parts and components needed for this version:
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Download the box layout and schematic files:
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I hope you enjoy watching this video and find it useful!