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DIY Cheap Lab Power Supply 5A/30V 3D Printer File Image 1
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DIY Cheap Lab Power Supply 5A/30V

Area51 avatarArea51

November 29, 2017

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Description

IMPORTANT: Get the latest updates for this model here on PrusaPrinters.
In 2021, all updates and uploads of new models were moved to PrusaPrinters, of course still free and under the same conditions... :)

Easy to build lab power supply from cheap eBay parts (approx. $16).

What you will need:

  • Power Supply unit: eBay Search
  • Spare laptop power supply (I use one with 19.5V DC / 4.9A)
  • Some black/red/yellow wires (from old PC power supply)
  • Female banana panel plugs: eBay Search
  • On/off panel switch: eBay Search
  • 4pcs 3x15mm countersink self-threading screws.
  • Printed case
  • Solder iron.

Note: Max. output voltage is limited to input voltage - 0.5V. Using the suggested laptop power supply will give a max. output of 19V.

Follow photos for assembly.

Printing time for case is approx. 3½h.

Updates
2021.01.29: Added model with ventilation slots for high power units.

License:

Creative Commons - Attribution - Non-Commercial - No Derivatives

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