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

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

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

Great video! Very informative. But you should consider putting some disclaimer, because some new to electronics guy/girl try to recreate this. He/she will be playing around with high voltage. Imagine not knowing how to reassemble the power supply unit after dissassembling it for painting and miss on putting the ground wire to the metal body of the power supply unit. Then that person might be in danger. Congratz on the video anyway.

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.

Thanks for your video. Help me very much.

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

Tx you give me good ideias, greetings from Brasil.

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

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

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.

Great job, very very interesting, thanks a lot

Tem vários aspectos a considerar sobre esse vídeo. Primeiramente este conversor chega a 30v com 4 A de saída, achei o cabeamento de saída bem fino asim como o de entrada, portanto exigir a corrente máxima neste caso achei arriscado. Segundo achei tbm o cabeamento fino para os bornes de 5v, eu usaria mais de um cabo para este fim, de resto achei bem legal a ideia, eu usaria as tensões de +3v,+12v e -12v em outros bornes.

Good job Definitely u can reach more subscribers

By far, Simplest construction....

*Consejo quitar esa música horrible que distrae sl estudiante*

Muito bom , fiz a minha assim também. Parabéns

Thanks o/ very good.

Really helpful video

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

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

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?

Nice Video, very informative. Can the Zk-4KX be reset to factory settings. And if so how is this done.

2:19 What is the cut size on the front panel so that the ZK-4KX fits perfectly?

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

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

I made this project so I could bend some acrylic but it keeps cutting off 🥺

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

Great videa, thanks :) Has this bench short circuit protection on output? Thanks

Değerli üstad, benim zk4kx Modülüm 19v laptop güç adaptörü ile çalışıyor ancak en fazla 7.72 volt çıkış veriyor, bu sorunumu nasıl cozebilirim bana yardımcı olabilir misiniz, teşekkür ederim

Hi , there.May I know why did you use 3.3ohm load to caliberate the settings

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

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

Hi, where can I see the schematic? And the list of parts as well. Great job I am also interested in putting together such a power supply. Thank you.

Can work in short circuit for repair boards?

Hi. Computer ATX has 12V. How out 28v ?

Very cool! I will try to do the same one. One question: if I want to add a USB port to charge small devices such as a smartphone, I simply need to use the 5V grey wire that you did not use? Thanks a lot

Hey, does this remember all it's functions when it loses power, and also, can you lock the controls so bumping the turning dial won't increase/decrease the output voltage (and damage your equipment). I want to install this on a Radio Transmitter and I don't want to exceed 8.4v DC output.

Can i use a ATX550W……..WT-4100cc ?

can you please help, the output volt is stuck at 28v and the volt display ajusdment is more advanced 1v, which is clearly out of sync thank you

hello my friends. can someone tell me what is the power transistor under the heatsink (Q2)?

Looks strange with the display on the side. 😉

Good video, I tried this modification with my ATX power supply and it gives me 12V(7A) and 5v(3.5A). Intended for my Cordless 12v drill. But once connected my drill to 12v line, the power supply turn off. After restarting it, tried several time and same thing happen. then, I connect my drill to 5 V line and surprisingly, it run without stopping the power. So, whats wrong with my 12v line. Can you give me an idea how to repair it. Many thanks! Appreciate it much if you could help me.

Is the rocker switch on the high or low voltage side? That is, do I need a 120VAC or 12VDC switch?

Does this Module remember your settings like voltage and current after a power loss?

Hey, nice vid! Couldn't tell from the video: can thr buck-boost module you used set amperage as well as voltage (I was confused because it only has one knob)?

If we use -12 and +12 for two terminal. Do we get 24 v?

Not good practice. you'd better use a 12/13.8V input larger boost/buck on a heatsink.

model ps-5141-2d1 wiring diagram

I didn't buy.. to much pressing, setting and stuff. But good video

👍🏻

Buck boost modul price?

Good luck

I personally don't believe this is the best solution to achieve an ATX bench power supply. You are asking hobbyists to discard the {potential} majority, of the available current, of the power supply. Alot of PC PSUs are able to deliver more than 10-20A, on some of the voltage rails. Further, these ZK-4KX converters are merely adequate at delivering 3A, over a period of time, let alone 4A! I have tested one of these modules, to charge lithium batteries, & within 3-4 minutes the unit has gone into over temperature mode. Their specs are over-rated. At the very least, it requires active cooling (fan), if operating above 50%, of it's rated current. I would state using good quality potentiometers, to regulate voltage/current, would be a better option, to allow the full optimisation, of the regulated PSU.

Hi, you didn't use a 10w 40 ohm resistor anymore? And no need to connect the brown sense wire to 3.3V?

Ups mother board

como jugas al oficio mudo, tube que bajar a la mitad la velocidad, y rebobinar Varias veces para entender que es lo que estas haciendo. No se entiende porque el led rojo de encendido, enciende al enchufar a la toma de corriente alterna, deberia encender cuando accionas el interruptor, asi, no tiene sentido. El display es muy bonito, muy lindo, pero: nadie entiende que hace, al parecer, hasta te toma la temperatura...hay que hacer un curso para entender, para que sirve, como se usa y como se ajusta, ya que parece que eso es lo que haces al final del video. La verdad, entendi poco de lo que hicistes, nunca dijistes que amperaje obtenes de salida, tampoco se entiende el porque de los 4 conectores, si al parecer, tenes salida variable de tension con el potenciometro del display. Sinceramente, esto es chino puro, si lo hicistes para fanfarronear, bueno, de lo contrario, o lo haces explicado como para la gente comun, o mejor, no subas mas nada, solo ponelo en estado de watsap, a ver si tus amigos te aplauden...

Poor resistor!

Gratidão 🙏

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

Which line to add USB port?

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

I want to buy this product but how?

Best video i have seen in a long time.

Creative video, thanks :)

Thanx

Whats the point in making a video if you are not going to explain what it is you are doing.. You are speeding through the project whats the point dude ???