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