DIY Variable Lab Bench Power Supply from ATX - How to Make it Cheap

In this video I will show you how I created a Variable Laboratory Power Supply from a computer ATX. Don't throw these PSUs away! These can be very useful for any electrical project. The whole power supply is very cheap, no more than 10$. The main unit of the device is a ZK-4KX Buck-Boost converter module, that is adjustable in 0.5-30 V and 0-4 A range. Additionally you will need some basic components only.

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Track 2: Disfigure - Blank [NCS Release]
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[julio_invest]

the best video of demonstration and how set this module! thanks a lot Dude!
hugs from Brazil!

[slavoljubristic]

Is it possible to install two LEDs, green and red, to show when charging is in progress and when the battery is charged

[tiagocosta]

never would've known that ZK-4KX existed if it wasn't for you video, thank you sir

[milivojeG]

Is that the PSU where "dummy load" on 12V or 5V power rail is not necessary? Cause I haven't see that you set the one? I see it was marked as PFC, which is fine. Thanks

[enriquegalleguillo]

Espectacular video sobre todo la parte final donde calibras los valores exactos de salida de voltaje y corriente. Te felicito .

[toffifee]

Great video, thanks to you I have a laboratory source, but I would rather put speaker terminals on the front panel.
Yes I use google translator.

[sc]

Hello, very informative video and web page. Thanks. Question: I saw in another person's video, he instead of cutting off the extra wires, fused all wires of same color together as if they are a single wire. And then he soldered the end of each bunch as if it was one wire. If I understood it correctly, according to him, it carries high currents/amps better. Is this true? Should one do that? Your module is up to 4 Amps. I was thinking of using a 20Amp module instead. If above is true, bunching of wires will be useful in that case. Thanks for guidance.

[Alexandre]

Thanks for your video. Help me very much.

[regis]

Hello,
Can i cut off the extra wires ?
All wires of same color together as if they are a single wire. And then solder it of the end of each bunch as if it was one wire.
I think high currents/amps better.
And also can i use a spot welder for battery 18650 with this kit ?
Thanks

[АрдуиноЯ]

Hello. Can you help me? Current stabilization does not work properly after calibration. With a setting of 2A, the current is stabilized at 1.8A. What is the problem? How can I reset the installation to factory settings?

[paulogiovanij]

Tx
you give me good ideias, greetings from Brasil.

[adilislm-thjy]

ZK-4KX DC DC Buck Boost Converter I can run a 12 volt 2 amp fan with it ?

[rahulkalra]

great video .. thanks .. how to make a rectangular hole on metal is something that i was looking for and this video helped a lot !!!!

[markgilcorido]

This module can't be used with 30V @full current because it limits @50W only, you can use the full current @12V only.

[kris]

Is there a way to get one that runs at higher amps? My PSU can put out 49amps and the charger I'm using accepts up to 30A

[edylsonn]

I bought one of these but it has 0.027 A even without connecting anything. Is it a defect? or is it a parameter ?

[unlockcelular]

Could the ends of the source be used in a heating element?
to cut duroport?
the source is not blocked with a heat resistor?

[PradipKumar-xrkv]

I am always confused. How a buck module will give you 30v when input is 12v?

[jamesjones-ynsv]

why didn't you put a 3v as well as the 5V and 12V to make it complete

[HungPham-kiwu]

I dont get it. The blue "display" part can work itself. Why do you need the psu.