My friend wants a 5V 2A power supply circuit. In model to be simple, use little equipment, build easy. Then, I choose this circuit for him. Why is it? It uses pillar equipment, a positive voltage regulator 5V / 2A in TO220, 78S05. And few parts see in a circuit, is high-quality and low noise.
5V 2A power supply using 78S05
The circuit will work without the extra components, but for reverse polarity protection, a 1N5402 diode is provided at the input, extra smoothing being provided by C1-220uF 50V. The output stage includes C2-47uF 25V for extra filtering.
This circuit is not designed PCB. If you do not want to design own PCB. Or use universal PCB Board that difficult./
I would recommend a DC/DC Converter 12V Step Down to 5V 3A Power Supply Module. It is a DIY Kits available for use. I hope also this guide to be useful for you.
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