This video will show you how to make a small yet functional lab bench power supply, with the added feature of being able to power it from any DC power source anywhere between 3 and 50V.

Warning: Working with 110V or 220V is extremely dangerous without proper knowledge. Please consult a professional if unsure. I am not responsible for injuries or damages caused by this power supply during build or use.

Documentation and script: https://drive.google.com/drive/folders/12qpkp2NuJ-EspMs0VmSUoi6NCD4o3lEM?usp=sharing

3D print, laser-cut, and engineering drawings: https://www.thingiverse.com/thing:3831773
If thingiverse isn’t working, use this link: https://grabcad.com/kralyn.3d-1/models

Part links:
(Amazon Links are affiliate, they support the channel with NO EXTRA cost at your end)
AC-DC 36V 5A 180W Switching Power Supply:
Amazon: https://amzn.to/2Zhea7i
eBay:https://www.ebay.com/itm/High-Power-AC-DC-Converter-110V-220V-230V-to-36V-5A-180W-Switching-Power-Supply/123275121813
UC Tronics 50V 5A step down converter:
Amazon: https://amzn.to/323GRBI
eBay:https://www.ebay.com/itm/US-New-DP-50V5A-LCD-Step-down-Programmable-Power-Supply-Module/163479717491
Banana Plug female:
Amazon: https://amzn.to/2ZqJQCn
eBay:https://www.ebay.com/itm/10Pcs-Speaker-Terminal-Binding-Post-For-4mm-Banana-Plug-Socket-Female-Connector/142631918119
3 Pin On off On switch:
Amazon: https://amzn.to/324MQWR
eBayhttps://www.ebay.com/itm/5-pcs-SPDT-On-Off-On-Mini-Black-3-Pin-Rocker-Switch-AC-6A-250V-10A-125V-IJ/233252195805
5.5mm female DC jack:
Amazon: https://amzn.to/2ZvNWcs
eBay:https://www.ebay.com/itm/DC-In-Line-Plug-Socket-Jack-Connector-Male-Female-1-3-1-7-2-1-2-5mm/251223174617?hash=item3a7e116dd9:m:m6UVVk-aDKXi0xEVzW-ReoQ
80x10mm 12v Fan:
Amazon: https://amzn.to/2ZqKAYb
eBay:https://www.ebay.com/itm/12V-DC-80x10mm-Brushless-2-Pin-Cooling-Fan-LED-Heatsink-Marine-PC-CPU/193044009715?hash=item2cf251d2f3:g:GfAAAOSwU0hcVyha
Other parts are salvaged from old electronics.

Music used:
_________________________
endless summer by Del. https://soundcloud.com/del-sound
Creative Commons — Attribution-ShareAlike 3.0 Unported — CC BY-SA 3.0
Free Download / Stream: https://bit.ly/_endless-summer
Music promoted by Audio Library https://youtu.be/3SZ_elswoA0

On the Way by Vlad Gluschenko https://soundcloud.com/vgl9
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: http://bit.ly/_OntheWay
Music promoted by Audio Library https://youtu.be/QwwuuvnfBlA

Almost Original (Instrumental) by Joakim Karud http://soundcloud.com/joakimkarud
Music promoted by Audio Library https://youtu.be/r20_9c0fzGk

, https://i.ytimg.com/vi/PhLFmokgr9o/hqdefault.jpg

source

35 Comments

  6. where are the stl files for the case of the small psu he used while making the bigger one?

  7. Thank you, I live off grid in Hawaii. I have been going crazy trying to find one that I could run off my DC system. I was dreeding the thought of converting DC to AC so I could power a DC power supply. I have just gotten by using whichever old phone charger that came closest to the current need. I'll be doing this tomorrow, Mahalo Brah , your a Champ.

  15. This might be a weird comment but how did you set up your Solid Works Background like that? It looks awesome. It would be really nice if you could tell me the settings to make mine look like that. Also, amazing build.

  18. I REALLY want to build this! I'm learning on a arduino board and I build drones and rc stuff also working on automotive wiring and I'm excited to expand my knowledge and abilities!

  24. Can I short the output of this PSU to set the max current setting like in a professional device or will it get fried?

  25. Dude – parts list, 3D print, laser cut, and blueprints – that is the way EVERYONE should be doing their tutorials – really good job!!

  26. You don't instill confidence when at 1:22 the 5 watt resistor starts to turn red and you let the smoke out.

  29. sir can u please teach me how can i make 12 volt 15 ampere dc power supply.
    thanks in advance

  32. you are handy and practical. But your soldering will fail. You make a lot of "cold joints", they will not work for long time and fail (if they work from beginning). You have to use soldering paste or rosin and keep soldring iron longer time on place until tin is melted and spread

    What I critically miss is a fuse on power supply input site!

  33. Nicely done job! But let's admit: the price per unit is much higher than you were referring to in the video: just the parts cost about $80, add filament, labor and other little things and it's price jumps over several hundreds (mostly because of labor 🙂

  34. If you have a single roll of filament to print the plates with: try painting the whole plate and sanding the surface over a flat sheet of abrasive.
    this will leave the inwards embossed text painted.

  35. I got a very weird issue with the uctronics buck converter. Whenever i wire all the schematics, the buck converter yields wherever voltage I set to as long as the case is open. When I close it (assembly everything up) the output voltage drops to 0.12 even when is set to 24v. Again I open up the case and wire everything just the same, the output voltage is just fine LOL. Any ideas

Leave a Reply

Your email address will not be published. Required fields are marked *