This projects was started by me looking for something to do with an old computer i have that is out dated and virtual useless. I saw a few PSU (power supply unit) to bench top power supplies on youtube and decided that this was a good idea.
A source of power i may need for future projects the deeper i get into electronic prototyping/engineering/fiddling
a gift for my Dad to replace his older louder bench top supply
*I claim no responcibility for personal property damage or damage of ones person by following this instructable*
Tools Needed: Screw Driver(Philips), Dremel with abrasion grinding disk, Metal File,Wire Strippers, Soldering iron+solder and stand, EYE PROTECTION
This power supply will have 3.3v,5v,12v,-12v,& Ground, with a well placed illuminated power switch.
Bill Of Materials:Working PSU, 5 banana jack binding posts($3.19 per pair of 2), (optional test/jumper leads $7.49 for a 6 pack, project enclosure 7x5x3" $8.99)
Solder ground to pin to on the switch and the green wire to pin 1 It is critical that You use a the one and ONLY GREEN cable. The green wire must be in a close circuit for the PSU to create DC electricity.
You could very well solder these wires to bottom of posts but i did not for the possibility of future expansion
Standard Wire color to voltage chart for ATX power supplies:
Orange: +3.3v, 10A
Yellow: +12v, 12A
Purple: +5vSB(Stand By), 2A
Grey: Power Good
Blue: +12v, 0.8A
I used an illuminated switch so it was more clear whether or not the PSU was creating power. The led light in the switch is wired to a 3.3v or Orange wire for power(light will only illuminate if PSU is creating power to all pins
extra wires should be cut off as far in case as possible
use crimp connectors to join wires and Binding posts
Step 13: Contest Entry
What I made:
I made a benchtop power supply from a Computer ATX PSU (power supply unit)
How I made it:
I used my knowledge of soldering, computers, switches, and lighting to create a tool that will help me in the future
Where I made it:
I made this Bench top Power supply in my Fathers garage with the tools that he has
What did i learn:
I learned that i don't have to but hundred dollar tools when i can make them myself.
I learned that with basic knowledge of electrical systems you can make a lot happen with what most would consider scrap/trash.
I learned how wiring in electronics and houses act very alike
Why i made it:
The main reason i made this is to make my dad who cant be home often due to his job in the military something to make his like a little easier and a little bit more silent