Converting Computer ATX Power Supply to Lab Bench Power Supply
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Uploaded by JumperOneTV on Jun 19, 2011
Small tutorial on Computer ATX Power Supplies. How to use them, how to connect them in series, in parallel. What is 12V rails? Is it possible to connect 12V rails together? ATX connector wiring explained. What is difference between old computer power supplies and new ones?
And finally how to make Lab Bench Power Supply from Computer ATX Power Supply.
ADDITIONAL INFO & PHOTOS: http://jumperone.com/2011/06/atx-power-supply-tutorial/
ATX WIKIPEDIA PAGE: http://en.wikipedia.org/wiki/Atx
And you can find some more cool stuff on http://www.jumperone.com/
- 572 likes, 7 dislikes
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Uploader Comments (JumperOneTV)
Top Comments
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@dillzio what a waste of comment
1 week ago 5
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@Tuningology Unfortunately, there's no easy way to make it adjustable. And by easy I mean - without knowledge how SMPS works.
Video Responses
All Comments (262)
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@LocoLibreisI No sir you dont have to dummy the 12v side. You just need some sort of load on the +5v side to regulate properly. Good luck
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@erik61801 the PC Power Supply I got has the 12v 1 and 12v 2. I hope I don't have to use the 12v for the dummy-load thing, if I do am fucked. still, am gonna try either a lightbulb or the 10w 10ohm resistor I already got whit the 5v red wires. I will also try two 10k ohm resistors for the LED's. thank you and JumperOneTV = D
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ur gay
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@LocoLibreisI Just use a lightbulb, like a brake light for a car, works on either 12 or 5. Its what Ive done and is cheap and works
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I got me a 10w 100ohm resistor but I was told to go a little higher than that. what is your opinion concerning this ???
LocoLibreisI 3 days ago
@LocoLibreisI Just try and see if it works for your PSU. If it doesn't - try lower resistance value.
JumperOneTV 3 days ago
at 00:39 you say negative 12V. How can you have negative 12V? I'm new to electronics and stumbled across this video and never heard of have a negative voltage.
DavidLawton93 4 days ago
@DavidLawton93 You should know that ground - it's a _virtual_ point. It's negative 12V _in relation to GND_. So, voltage between +12V and -12V would be 24V. Imagine these voltages as a line, with GND in the middle.
JumperOneTV 4 days ago
@JumperOneTV Ok and is there a difference between +12V and -12V? Thanks for replying. :)
DavidLawton93 4 days ago
@DavidLawton93 In case of ATX PSU - negative 12V can supply only about 1 amp.
JumperOneTV 3 days ago