Introduction: DIY Bench Power Supply From ATX PSU

Picture of DIY Bench Power Supply From ATX PSU

warning never connect to ac wall plug while cover opened !!!
learn how to make an easy bench power supply from pc atx power supply it can afford -12v , 12v , 5v, 3.3v and variable 1.2v~11v

Parts:

Aliexpress

Voltage Regulator : https://goo.gl/CcUwxQ

HeatShrink : https://goo.gl/FE1Bp7

panel V/A meter : https://goo.gl/FE1Bp7

banana pin : https://goo.gl/FE1Bp7

Ebay:

Voltage Regulator : https://goo.gl/Kr8IB1

HeatShrink : https://goo.gl/Kr8IB1

panel V/A meter : https://goo.gl/Kr8IB1

banana pin : https://goo.gl/Kr8IB1

warning never connect to ac wall plug while cover opened !!!

learn how to make an easy bench power supply from pc atx power supply it can afford -12v , 12v , 5v, 3.3v and variable 1.2v~11v

Step 1: Blue Prints

Picture of Blue Prints

in first pic

we will make color groups and connects each group to banana pin

then V/A meter

thin wires is 5v to 30v power

thick wires for measurements

Red : to measure voltage

Black : to common GND

Green or yellow : GND out

then we have to connect lm317t circuit to 12V yellow wire

Step 2: Instructions

Follow this video

if you have any questions let me know it in comments

Subscribe on my channel on youtube Eslam's Lab if you are intersted in what i'm doing

Comments

russ_hensel (author)2017-03-23

Nice project, but not quite a lab supply ( as in pic ). You need to add adjustable current limiting ( which I have almost never found a need for ).

i know it's not really like all lab power options but for bigginers it dosn't matter

russ_hensel (author)2017-03-23

Welcome to the club: Just a note to let you know I have added this instructable to the collection:

Encyclopedia of ATX to Bench Power Supply Conversion

>> https://www.instructables.com/id/Encyclopedia-of-A...

Take a look at about 70 different approaches to this project. This topic is one of the more popular of all instructables.

thank you russ