DIY Cheap Lab Power Supply 5A/30V
thingiverse
Easy to build lab power supply from cheap eBay parts (approx. $16). What you will need: - Power Supply unit: [eBay Search](https://www.ebay.com/sch/i.html?_from=R40&_nkw=Adjustable+5A+Step-Down+Buck+LCD+Digital+Power+Supply+Module&_sacat=0) - 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](https://www.ebay.com/sch/i.html?_from=R40&_nkw=4mm+Banana+plug+Jack+socket+Female&_sacat=0) - On/off panel switch: [eBay Search](https://www.ebay.com/sch/i.html?_odkw=power+switch&LH_BIN=1&_osacat=0&_from=R40&_nkw=rocker+switch&_sacat=0) - 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.
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