i would like to start off by saying this is my very first instructable.
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.
Planned Uses:
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)

Step 1:

PSU from the ribbon cable era. i will not be going into spec. details because i feel that there is little to no need. Small differences may exist between different manufactures but for the most part all PSU's are the same
<p>Hey i just wanna ask i can add another post for a 5volt with a 4amp or 5amp current? Because im gonna use that to charge 18650 batteries..</p><div><br>Is there a possibility to do that?<br><br>And also all of 3.3, 5 and 12 volts are all 16 amps, where should solder the brown wire?<br><br>My psu is Delta Electronics DPS-220U B-5 A if you wanna check it out..<br><br>I really need you held right now man..</div>
<p>Just a note to let you know I have added this instructable to the collection: <br>Encyclopedia of ATX to Bench Power Supply Conversion <br>&gt;&gt; <a href="https://www.instructables.com/id/Encyclopedia-of-ATX-to-Bench-Power-Supply-Conversi/" rel="nofollow">https://www.instructables.com/id/Encyclopedia-of-ATX-to-Bench-Power-Supply-Conversi/</a><br>Take a look at about 70 different approaches to this project.</p>
One minor suggestion, if the fan is facing to push air into the supply, it should have enough room (&amp; wire) to reverse to draw air OUT (through) the supply case.. I ran across this quite awhile back, even with an old computer I had, which someone made an add-on cooling fan, but it forced air into the case, keeping it warm.. (Less points to escape from).. But, reversing the flow to draw the air out, the machine ran cooler. <br>
that actually makes a ton of sense. may have to crack that bad boy open
i c wat he means by sloppy work man ship
or use a step drill to make correct sized hole?
Welcome here! <br>Good project, good descriptions, look forward to seeing more form you!
Thanks! Plan on making a whole lot more for my hobbies. Stay tuned!
What kind of noise does your dad's old power supply make? Like what is making the noise? If it is a fan you can usually quiet those up with some oil. Look under the center hub sticker of the blades for where to access the axle that needs some lubrication. <br> <br>How come all of your pictures are mirrored? I almost thought you wrapped the wires around your banana jacks the wrong way. I still think you need to get all of your stranded wire under those jack lugs. Try twisting the wire and tinning it lightly with some solder to hold the strands together for you. For that to work good though you have to twist the wire neatly, not put too much solder on it, and bend the end in a hook that goes around the stud.
The old power supplies noise is probably just the fan now that u say that. I did take your advice with soldering the wire tips knowing they are just kind of sloppily in there was starting to bug me. With future instructables I plan on mirroring them to be correct (for perspective) but I didn't realize until u made the comment. Thank you for the constructive comment :)

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