DIY Mini Lab Bench Power Supply (With Switchable DC and AC Input)
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- เผยแพร่เมื่อ 26 ส.ค. 2019
- This video will show you how to make a small yet functional lab bench power supply, with the added feature of being able to power it from any DC power source anywhere between 3 and 50V.
Warning: Working with 110V or 220V is extremely dangerous without proper knowledge. Please consult a professional if unsure. I am not responsible for injuries or damages caused by this power supply during build or use.
Documentation and script: drive.google.com/drive/folder...
3D print, laser-cut, and engineering drawings: www.thingiverse.com/thing:383...
If thingiverse isn't working, use this link: grabcad.com/kralyn.3d-1/models
Part links:
(Amazon Links are affiliate, they support the channel with NO EXTRA cost at your end)
AC-DC 36V 5A 180W Switching Power Supply:
Amazon: amzn.to/2Zhea7i
eBay:www.ebay.com/itm/High-Power-A...
UC Tronics 50V 5A step down converter:
Amazon: amzn.to/323GRBI
eBay:www.ebay.com/itm/US-New-DP-50...
Banana Plug female:
Amazon: amzn.to/2ZqJQCn
eBay:www.ebay.com/itm/10Pcs-Speake...
3 Pin On off On switch:
Amazon: amzn.to/324MQWR
eBaywww.ebay.com/itm/5-pcs-SPDT-O...
5.5mm female DC jack:
Amazon: amzn.to/2ZvNWcs
eBay:www.ebay.com/itm/DC-In-Line-P...
80x10mm 12v Fan:
Amazon: amzn.to/2ZqKAYb
eBay:www.ebay.com/itm/12V-DC-80x10...
Other parts are salvaged from old electronics.
Music used:
_________________________
endless summer by Del. / del-sound
Creative Commons - Attribution-ShareAlike 3.0 Unported - CC BY-SA 3.0
Free Download / Stream: bit.ly/_endless-summer
Music promoted by Audio Library • Endless Summer - Del (...
On the Way by Vlad Gluschenko / vgl9
Creative Commons - Attribution 3.0 Unported - CC BY 3.0
Free Download / Stream: bit.ly/_OntheWay
Music promoted by Audio Library • On the Way - Vlad Glus...
Almost Original (Instrumental) by Joakim Karud / joakimkarud
Music promoted by Audio Library • Almost Original (Instr... - วิทยาศาสตร์และเทคโนโลยี
Dude - parts list, 3D print, laser cut, and blueprints - that is the way EVERYONE should be doing their tutorials - really good job!!
Sure, as if anyone has a 3d printer at home.
@@ciprianpopa1503 3D printers are really affordable these days... I got one for £180 and it is great
@@ciprianpopa1503there are also some companies that can print whatever file you send to them. Usually that's at an affordable price
Literally has a blueprint to hand cut it...
At the current moment this project is 100% not worth making - because you can buy 60v 5A power supply at a cost 2-3 times less than this DIY device.
I'm 62 years old, retired, and been working with electronics since tubes were in fashion. I really enjoyed this video. While I can afford a ready-made power supply, you've inspired me to make my own variable voltage supply. Thanks!
Omg, I'm literally just printing your 18650 powerbank the whole day! Specially bought an ender 3 to make this project. I'm really excited to make this one too in the future. Love the way you explain everything and make it available for everyone to make. Thanks and keep up the good work!
@@Solipsfilm de ender 3 is een geweldige 3D printer. kijk online voor mods om het nog beter te maken!
For some reason I cant download the file on thingiverse?
This is the best DIY Power Supply video I've seen on TH-cam. You can tell you put a lot of time and work into it thank you.
Future youtubers take note - this is how a tutorial is done. My compliments. Awesome video.
Very informative, I love that you seem to have done all the difficulty out of finding a decent way to make a power supply that has some awesome features. Thanks for your video!
Your channel is awesome. Step by step instructions, parts list, script, models, and documentation? You've created the perfect place online to learn and follow along.
So glad to see you start up your videos again.. keep them coming ...we love em.
Hey I love how straight forward you explain everything. The problem is usually people will overcomplicate it or dumb it down so much the video is just too long. Right exactly my speed. Which is interesting because you're clearly well beyond my capabilities given how you design these things. Looking forward to that Positron 2.0
Dude, I really liked this video. You took great pains to explain every step which I really appreciate. Meticulously executed - well done!
Good job, I think you will find holding the soldering iron still will give better results and better heat transfer.
Great video, and thank you for the case design! Everything looks great.
YES!! Now the development of the monster battery pack kit will speed up by 1000x!!!!
man the old one is just too tight to do solders and shit honestly he should kickstart the case and the circuit boards so if people source cheap 18650s itll be a cheap powerbank lmao
This channel deserves SO MUCH MORE attention! Great projects, well explained, so much effort! Just thank you m8!
Great fabrication, really enjoyed your process, and design. I've got the drok equivalent, (almost) and now, can realize how to actually maximize it due to what you have done. Thank you.
Yes! Another Video from Kralyn. I love all of your projects so please keep it up! Especially your powerbank was really cool.
Please come out with more videos.. I love your type of work, Thank you!
Thank you, I live off grid in Hawaii. I have been going crazy trying to find one that I could run off my DC system. I was dreeding the thought of converting DC to AC so I could power a DC power supply. I have just gotten by using whichever old phone charger that came closest to the current need. I'll be doing this tomorrow, Mahalo Brah , your a Champ.
I feel like id back anything you make on kickstarter my man. Keep up the good work
I watched all your videos today and subscribed!!!
听口音应该是华人吧？真心佩服，加油！期待更多视频！
Excelente proyecto, tendre muy en cuenta tus recomendaciones, tus ideas son un verdadero agassajo en mi mente
The power supply that you made is awesome and actually the biggest advantage is the dc input . Thanks for the project.
I think that I have to make a new power supply .
👍👍👍👍
Great Project, very well explained walkthrough! Keep up the good work
Just what I was looking for a week, thanks!
A very inspiring project. My needs are a little different but this project gave me lots of ideas.
This is an awesome build. I think a flip down handle underneath so you could flip it down angling the box/screen upward for easier viewing. Just a thought.
Nice! Very nice compact unit. Thanks for sharing!
Fantastic and clear step by step guide, thank you!
Great work! Also use a mosfet for reverse polarity protection from the DC input as that is much better than having a blown diode or damaged battery 😅.
Though you take time, your projects are perfect...
“You are amazing, just keep going bro
Outstanding, looks great thanks for all of your hard work!!!
Your projects are cool as hell....but your soldering technique is genuinely terrifying.
I was also worried about it.
His soldering technique is worst commercial product level.
I see this so much of the time anymore, don't they teach soldering in electronics programs anymore?
@@ReneStover I have no idea. I mean, i only did electronics in high school, so i can only speak for that.. almost 20 years ago... they taught me to solder correctly. I've only gotten better at it since then. I don't know if they cover soldering in high school anymore, or college, or vocational school....maybe they do, maybe this guy was taught how to do it right, but doesn't care, or sucks at it..
Or maybe he's self taught, and learned how to solder from watching some tit on youtube do it wrong. I honestly have no idea. What i do know for sure is that his soldering technique is genuinely terrifying.
Soldering don't come much worse than that. ;)
The solder job at 8:49 was horrendous, although some of the other joints were not QUITE so bad. Some of the soldering footage was at 2x speed though, so it looks like he withdraws the iron too early but may not be quite as bad as it seems. (Still, I agree, the results are not fabulous by any means. This is a problem when working with mains, earthing, etc...)
I love your channel...
Covers always looks clean
And diagram was awesome..
Three things: great project, mad props for using standard units instead of metric, and for Proverbs 9:10. Major thumbs up from me.
I'd build one of these if I had a printer. I have needed a DC power source before while diagnosing electronics.
I finished building this PSU today and I have to say that it is really awesome but I installed an BeQuiet Silent Wings 3 12v Fan to cool the entire thing more efficient.
If you want to get a 3D printer that is cheap and easy to repair, then I recommend the Creality Ender 3 pro. I bought this printer for 120$ from ebay and it just worked fine, after I printed 3D upgrade parts to improve the 3D printing capabilities with this printer.
Wow this is amazing! I'm envious of that power supply but I can't really justify the cost as I already have two simpler ones (cc&cv, no power setting etc)
great video and many thanks for all the additional information and links provided!
Oh Boy, I am glad to see this video, i was just the other day debating to build me a CC / CV bench power supply.. but i was going to build it with 2N3055 Transistors. but now that i see this one, it will be much easier and efficient.
What a cool project! Thanks for sharing!!!! :) I need equipment too, and even used equipment is too expensive. All sorts of ideas come to mind, a frequency generator, oscilloscope, electronic microscope for small component soldering...
You're finally back! Hello and welcome!🙂
This project came to be because I wanted a portable, accurate and versatile power supply, and nothing online satisfied my needs. I hope this video can help some of you to make your own in case you need a solution like this. Feel free to ask me any questions in the comments. I will try to answer them to the best of my abilities.
Man, every video of yours is like birthday to me. I am 15, I watched your power bank vid like 50 times already and now I am going to build it. I learned so much from your videos and electronics is my new passion. Thank you
nice work sir, thanks for the parts list :)
sir,The 3D print file can be share?
Hey man oh, I've been looking for the same thing for a very long time. Thank you so much for providing this. I still plan on designing my own version but I'm very proud that somebody has finally made something this elegant with the technology available to us. I wish you the best and I can't wait for the next one
@@ruolanace5241 Both google drive link and Thingiverse links are now active.
Outstanding. The best teaching video I've seen of its type. That comes from a guy who taught for 37 years.
Some picky stuff, sure.
A diode should protect all the DC inputs and outputs. People screw up wiring barrel jacks and such all the time. Think about a smoothing cap right at the binding posts. Do some ripple tests and work out your optimum capacity.
The mains termination to the board really needs to be mechanical. Solder and hot glue aren't enough.
I'd add a set of USB sockets to both input and output sides. Use diodes here again.
As in all designs, things would change a little if you had an industrial style review meeting or committee. Someday, you will be running one of those if you keep going.
I can't find a Patreon account for you. If you have one, please let me know.
I would be interested in purchasing your boxes or even kits. Let me know if you are interested.
You're a star kid. Keep it up.
i really love it
and i know you encourage us to make one of this .thank you keep uploading video .
you did a very fine job on this sir good job!
You are the MAN! wish i had this vid last year, i couldve made a much better bench psu for myself. Def on my list to do soon
oh man-so cool.will save for future project this fall or winter
Love it, just what I needed. Thank a lot
That's a cool project, thanks for sharing it!
awesome build & video! thank you for sharing
WoW... Nice project! Hugs from Brazil. 🇧🇷
Your engineering skills and creativity are inspiring to watch. I definitely enjoy the videos where you explain better than the ones with words on the screen and music. Well done!
I like your approach! Nice job!
Nice build, may I suggest using a thermal speed controller for the fan instead of a switch or just auto full on. This way you prolong the life of the fan and also have the appropriate speed to match the temperature needed to be cooled.
Edit**
I am looking to do something similar with a toroidal transformer that has 2 suitable secondary windings that will give me a 5v Fast Charge USB and 2x 12v outputs as well as two additional windings (with on/off switches of course) to use as a dual variable supplies
The fan idea sounds smart. How would you do it if you made this modification?
You're a great creator. Every time is see one of your vids pop up in my feed it's a welcomed surprise.
A new Video!
I love you're videos, please make further!
Thank you for sharing. Excellent solution.
How to solder a 20amp Diode : HOLD THE GOT DAMN IRON ON IT UNTIL IT GETS HOT ENOUGH AND SOLDER *FLOWS* onto the leads (2-4 seconds)
that being said i was VERY impressed by how you desoldered that SMD LED , i couldnt do that if i tried :D
Forthereg M if you have a chisel tip that is big enough and don’t need the SMD LED, just slap the iron on both pads
Doesn't take much - big blob of solder on the iron tip, touch the LED, pull it off. Most of them time they're even salvageable, but not necessary for this.
good work, in my opinion the best case by connectivity in TH-cam
Good idea to assembly circuits out of the shell in a box that fit your needs. a couple of hints: add a fusebox to cover the hivoltage cord AND in another place the outputs in case of a short of the load, in an accesssible side to blast em in case of failure; add a layer of insulation using a shrink tube on 220 terminal.
use color coded wire inside to know what wire is carring what.
Due it's a tool to be moved , fix condensers and other big elements with hot glue (couse on transportation\ accidentally falls those boards arent assembled and builded for a mobile use).
on terminals connection glue is not a solution : prepare a pcb board, and use it (with addictional screws) to add mechanical resistance otherwise in frequent use those terminal will unglue form the chassis. best regards!
Good video, you teach me lots of things. If you just buy, you don't learn much, and are not sure if all the safety features are in place.
This is a fantastic video! Really nicely done. Although, I highly doubt you saved any money by doing it yourself, the fun was probably worth it.
you always make qualityful DIY video.
You're a rockstar Kralyn! Thanks
Very nice and compact design.
I really like what you do. Worthy to follow
4:06 uk colour code is
Live= brown
Neutral= blue
Earth= green/yellow
Just check the connections with a continuity tester.
If you use dc in, how does the premade part with the screen handle a request for higher voltage?
Nice build!
A comment from this guy tells a lot 🔥
The man himself
Very nice! thanks for all the sharing!
My respects man! Just wanted to know how you learn all this!
This is an excellent video, i am going to build one, thank you :-)
You need to improve your soldering. I saw many cold solder joints on your video. Soldering iron tip should touch to the legs 1-2 seconds more after you pull out the solder.
Yes, and heat ALL parts of the joint, NOT just the top item, and then flow the solder into the joint. Almost every solder joint shown in this video is appallingly poor. Anyone dealing with electronics should have far better soldering skills than what is demonstrated in this video.
That's why the hot glue is used, right?? :P
@Blondie SL I have seen this design a few times, do not believe it is his.. They might have done a few tweaks but sure it is stolen from the internet..
That’s what I was thinking. The soldering iron’s job is to heat the components so thay *they* melt the solder causing the joint to be “wet”, not to melt the solder directly. Considering that there are a lot of high-current connections here (and that this is a portable power supply) , good solder joints are essential.
I was taught: "Don't paint." Don't use the soldering iron like a paint brush. If you have to "paint" the solder on, you're doing it wrong. Let it flow. If it doesn't flow, use more flux. Still doesn't flow? More heat.
Looks nicer then most of the small power supplies on the market. .
Good and neatly project.. keep it up..i loved it..
I love this bench PSU. I liked the beginning explanation up until the shock diote. From this point on, we all might appreciate each step explained as each step before.
It is a Schottky diode but a power silicon diode will also work - it just has a higher voltage (0.6 versus 0.2)
This is amazing! Gonna have to give this a try
This is awesome man! Thank you!
I just found this video today and liked and subscribed.
Well done my friend great job
Woow, your project is so amazing
Very good! thumbs up THANKS
Dude, Great work. You inspired me to make one.....
Interesting..now i can use my knowledge on electronics.too bad i dont have experience on 3d printer.
He includes the 3D print files in the description. The hard part (designing in CAD) has already been done.
Just buy cheap project box on ebay or ali
This was amazing, thanks!
Very nicely done!
Excelent work. Congrats! 👏👏👏👏🤔🇦🇷
I REALLY want to build this! I'm learning on a arduino board and I build drones and rc stuff also working on automotive wiring and I'm excited to expand my knowledge and abilities!
very good its really understand easily
i like all your stuff .... pretty cool
The intelligence is not for many will be that the project will be sold someday ... very good goes my thumbs Marcos do BRASIL
You should at least learn how to solder before designing a mains powered device, learn about reliable connections and how to connect the mains earth without being a safety hazard. Then think about the mechanical stability of your casing before you switch on your EMI/Ripple generator.
At all it visually looks nice and many considerations went into this project. So thank you for showing this off.
Agree. It is scary at times. It seems more like 'tacking' than soldering. And, like you said, no mechanical bond. and like you alluded to the connection seems ill-suited for mains or high current..
Wow.. This is beautiful
I really like the way you make great videos
i watched all ua videos.. u r really an amazing guy...simply genious..
Because he can solder together fine made done modules ? :"D
Pls... check GreatScott and think about it again...
I mean... this is not bad, but nothing special, except the 3D printed housing, everything else is known stuff long time ago... i had a buck boost converter almost the same, but better version (because it is not just Buck Converter) and had a better Displayed controll board...
All was 10-15 USD from Aliexpress.
It is a good solution... until u bought a PSU...
Had many bullshit in this video, but fair enough, interesting !
Oh, really a work of art !
Fantastic project, I use something very similar but not as good looking as this one
mewah bener bos power supplynya. jadi pengen punya juga 👍
Very nice video!! Great info!