Lab Power Supply (Cheap & Powerful)

thingiverse

This is an extremely affordable option (50-60 euros in components) and very powerful power supply for laboratory/workshop use. It's made from 3 printed pieces of PLA/ABS or any other material, except flex. You will get adjustable 0-45.00V and 0-5,000A output in very fine increments. Although it may not be perfect for supplying power to precision electronics due to a little electrical noise, it will do the job for most workshop use. It's extremely precise in setting the voltage and current! It's absolutely quiet (no fan is required). You'll also need: 250W 48V AC-DC transformer/power supply (available on eBay or AliExpress), an adjustable voltage/current buck (50V 5A) from Banggood or eBay, some 3-core mains cables from a local shop or home junk, four 4mm female plugs in red and black (from a local shop or any electronics store, available on eBay...), one standard 10 or 16A 250V switch from a local shop or any electronics store, eBay...), a 5mm red LED (optional) maybe you have it at home, a 10k normal resistor (optional - for led) maybe you got it at home. Links for the power supply and buck are available at: http://www.ebay.de/itm/222240258495?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT, http://www.banggood.com/DP50V5A-Buck-Adjustable-DC-Power-Supply-Module-With-Integrated-Voltmeter-Ammeter-Color-Display-p-1050061.html?rmmds=myorder. I've printed in white PLA and then spray painted with acrylic paint in matt black. Please bear in mind that the device will work on 220V, so be careful - it's not cool to mess around with it. Better to leave a comment if you're unsure what to do than to fry something. Best regards, Jure Korber