24V Power Supply

DIY Notes

While extremely useful, no single decent open source design exists for an Arduino-driven, switch mode, offline power supply converting to 12 or 24 volts. There is a number of examples of complicated switching in DC-DC, but nothing for 120AC to 24VDC supply such as for a 3D printer (250W) or a small welder (2kW) - which could both be very powerful, useful use cases.

Closest Examples

• None

SMPS Diagrams

• Simple low power - 12W - [1]

DIY BOM

• High frequency transformer - [2]
• $10 for a 500W transformer - [3]
• $6 for 100W - [4]

Regular

• 15A, $25 - [5]
• 17A, $20 - [6]
• 21A, $34 - [7]
• $32, 20A - [8]

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Mini

• 6A - $11 - [9]
• 5A sure bet - $14 - [10]