Benchtop Power Supply from an old PC

Repurpose an old PC power supply and create a new benchtop power supply.

This version has fixed and variable voltages that can supply three voltages simultaneously. It also have the ability to supply a constant current output.

See a written version of this video, with complete parts list, wiring diagrams and more at:
https://resinchemtech.blogspot.com/20...

Chapter Breaks:
00:00 Intro
01:19 Features
02:44 The PC power supply and specs
04:44 Removing the old power supply
06:03 Identifying the wiring
11:04 Removing the power supply top
12:08 Precautions and retained power
13:35 Freeing up extra wiring
14:15 Finding an enclosure
14:34 Designing the front panel
15:00 Creating the back and front panels
16:15 Layout design in the enclosure
16:54 Mounting the power supply
17:18 Adding terminal blocks and power supply connections
18:16 Resistive Load
19:15 Toggle switch and LED indicators
20:28 Wiring fixed voltage side
22:27 Preparing the variable buck converter
24:02 Wiring the buck converter
24:32 Wiring the variable side
25:28 Fusing
26:04 Testing and multiple outputs
28:23 Multiple output limitations
29:07 Wrap up and additional info

Links to Parts Used:
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Enclosure Project Box: https://amzn.to/3bxocbD
8 Circuit Terminal Block: https://amzn.to/3AdpUZI
Crimp Terminal Kit: https://amzn.to/3yim1l5
Banana Plug Connector Kit: https://amzn.to/3njh70J
Illuminated Rocker Switch: https://amzn.to/3xVhuUn
Glass Fuse Holder Kit: https://amzn.to/3Nhg4sZ
Fast Blow Glass Fuse Kit: https://amzn.to/3QOqL9i
LED Assorted Kit: https://amzn.to/3A5AQsj
Potentiometner Assorted Kits with caps: https://amzn.to/3NLWuVJ
LED Digital Voltmeter/Ammeter: https://amzn.to/3Omaaba
10W 10 Ohm Aluminum Case Resistor: https://amzn.to/3buaS7V
Step-down variable Buck Converter: https://amzn.to/3QMcU3b
Assorted Resistors: https://amzn.to/3P4XeHj
Liquid Electrical Tape: https://amzn.to/3Awyova
Metal Standoffs Assorted Kit: https://amzn.to/3Awsz12

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The Big Bang Theory Credit: Chuck Lorre Productions and Warner Brothers Television

#powersupply
#diy
#projectpower