DIY Mini Lab Bench Power Supply (With Switchable DC and AC Input)

Рет қаралды 1,176,147

4 жыл бұрын

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...

Пікірлер: 805

@1TylerM 3 жыл бұрын

Dude - parts list, 3D print, laser cut, and blueprints - that is the way EVERYONE should be doing their tutorials - really good job!!

@ciprianpopa1503 Жыл бұрын

Sure, as if anyone has a 3d printer at home.

@mannygenetics374 Жыл бұрын

@@ciprianpopa1503 3D printers are really affordable these days... I got one for £180 and it is great

@andylopez1072 Жыл бұрын

@@ciprianpopa1503there are also some companies that can print whatever file you send to them. Usually that's at an affordable price

@tshvahn Жыл бұрын

Literally has a blueprint to hand cut it...

@SingTodayi Ай бұрын

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.

@tjkoker 4 жыл бұрын

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!

@Solipsfilm 4 жыл бұрын

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!

@mehdi2344 4 жыл бұрын

@@Solipsfilm de ender 3 is een geweldige 3D printer. kijk online voor mods om het nog beter te maken!

@chanceoverholt921 4 жыл бұрын

For some reason I cant download the file on thingiverse?

@skylabby 4 жыл бұрын

So glad to see you start up your videos again.. keep them coming ...we love em.

@jlwatjr 2 жыл бұрын

Future youtubers take note - this is how a tutorial is done. My compliments. Awesome video.

@forageandforge 4 жыл бұрын

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!

@muxallopeniot9194 3 жыл бұрын

This is the best DIY Power Supply video I've seen on KZfaq. You can tell you put a lot of time and work into it thank you.

@thedubiouswizard 3 жыл бұрын

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.

@IkkeiOdaira 4 жыл бұрын

YES!! Now the development of the monster battery pack kit will speed up by 1000x!!!!

@Gamer-nc8qp 4 жыл бұрын

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

@kahveciderin 4 жыл бұрын

Just what I was looking for a week, thanks!

@engineer0239 4 жыл бұрын

This channel deserves SO MUCH MORE attention! Great projects, well explained, so much effort! Just thank you m8!

@lifeselectronic 4 жыл бұрын

“You are amazing, just keep going bro

@gamesnic 4 жыл бұрын

Yes! Another Video from Kralyn. I love all of your projects so please keep it up! Especially your powerbank was really cool.

@MrBrassporkchop 2 жыл бұрын

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

@publicmail2 4 жыл бұрын

Good job, I think you will find holding the soldering iron still will give better results and better heat transfer.

@BritishJax 4 жыл бұрын

I feel like id back anything you make on kickstarter my man. Keep up the good work

@johndawson6057 4 жыл бұрын

You're finally back! Hello and welcome!🙂

@theonlywaytogta6665 Жыл бұрын

Dude, I really liked this video. You took great pains to explain every step which I really appreciate. Meticulously executed - well done!

@divyajnana 4 жыл бұрын

Great video, and thank you for the case design! Everything looks great.

@mahatmadoo2566 4 жыл бұрын

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.

@numberyellow 4 жыл бұрын

Your projects are cool as hell....but your soldering technique is genuinely terrifying.

@shizu_chan_ 4 жыл бұрын

I was also worried about it. His soldering technique is worst commercial product level.

@ReneStover 4 жыл бұрын

I see this so much of the time anymore, don't they teach soldering in electronics programs anymore?

@numberyellow 4 жыл бұрын

@@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.

@Graeme_Lastname 4 жыл бұрын

Soldering don't come much worse than that. ;)

@MatSmithLondon 4 жыл бұрын

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...)

@balrajgorak7243 4 жыл бұрын

Though you take time, your projects are perfect...

@rikkimaru7705 2 жыл бұрын

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.

@MakerMike-bx5ms 4 жыл бұрын

Nice! Very nice compact unit. Thanks for sharing!

@samykamkar 4 жыл бұрын

Nice build!

@johndoex421 3 жыл бұрын

A comment from this guy tells a lot 🔥

@milkman2143 2 жыл бұрын

The man himself

@nickg9215 4 жыл бұрын

Great Project, very well explained walkthrough! Keep up the good work

@shawn8054 4 жыл бұрын

Fantastic and clear step by step guide, thank you!

@MadLabZ 4 жыл бұрын

Outstanding, looks great thanks for all of your hard work!!!

@AoShi 4 жыл бұрын

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！

@orenrob1914 4 жыл бұрын

You're a rockstar Kralyn! Thanks

@billygraham3064 4 жыл бұрын

Please come out with more videos.. I love your type of work, Thank you!

@Brandon-rc9vp 4 жыл бұрын

great video and many thanks for all the additional information and links provided!

@prateekmahajan1929 4 жыл бұрын

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 😅.

@science2physics589 3 жыл бұрын

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 . 👍👍👍👍

@34Gw 4 жыл бұрын

I love your channel... Covers always looks clean And diagram was awesome..

@PeterCCamilleri 4 жыл бұрын

A very inspiring project. My needs are a little different but this project gave me lots of ideas.

@colossalbigfoot256 3 жыл бұрын

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.

@alienw99 4 жыл бұрын

I like your approach! Nice job!

@mcdirty311 4 жыл бұрын

Love it, just what I needed. Thank a lot

@BikesBlades 4 жыл бұрын

That's a cool project, thanks for sharing it!

@Timh-hx2le 4 жыл бұрын

A new Video! I love you're videos, please make further!

@josephdragojevich7041 4 жыл бұрын

you did a very fine job on this sir good job!

@matthewseals8110 4 жыл бұрын

This is awesome man! Thank you!

@paullucasjr 4 жыл бұрын

oh man-so cool.will save for future project this fall or winter

@timeobserver8220 2 жыл бұрын

You're a great creator. Every time is see one of your vids pop up in my feed it's a welcomed surprise.

@rays.2480 4 жыл бұрын

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.

@ShadowFandub 4 жыл бұрын

Finnaly a other excellent video! :D

@j.lietka9406 4 жыл бұрын

awesome build & video! thank you for sharing

@KingJellyfishII 4 жыл бұрын

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)

@eddyyu7091 4 жыл бұрын

Oh, really a work of art !

@CreativeChannel-KST_VN 4 жыл бұрын

I really like what you do. Worthy to follow

@KennyTrussell 4 жыл бұрын

Very nicely done!

@TehButterflyEffect 4 жыл бұрын

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.

@burnzy56469 4 жыл бұрын

Amazing content as usual

@stevetobias4890 3 жыл бұрын

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

@soysmc2933 4 ай бұрын

The fan idea sounds smart. How would you do it if you made this modification?

@Mad_gamers323 4 жыл бұрын

Well done my friend great job

@FailureIsOptional 4 жыл бұрын

Very nice! thanks for all the sharing!

@jorgegb1022 4 жыл бұрын

Excelente proyecto, tendre muy en cuenta tus recomendaciones, tus ideas son un verdadero agassajo en mi mente

@thacypher6308 4 жыл бұрын

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.

@youtuuba 4 жыл бұрын

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.

@jamesbrown99991 4 жыл бұрын

That's why the hot glue is used, right?? :P

@hankbizzo5 4 жыл бұрын

@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..

@bunkie2100 4 жыл бұрын

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.

@testing2517 4 жыл бұрын

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.

@jonathanwinegar1221 4 жыл бұрын

This is amazing! Gonna have to give this a try

@braselectron 4 жыл бұрын

Thank you for sharing. Excellent solution.

@badhonebrahim7707 2 жыл бұрын

you always make qualityful DIY video.

@mfmr200 4 жыл бұрын

Wow.. This is beautiful

@stevedonalson5675 4 жыл бұрын

Very nice and compact design.

@felixsantiago6775 3 жыл бұрын

i really love it and i know you encourage us to make one of this .thank you keep uploading video .

@ManiekGSF 2 жыл бұрын

Nice job my friend !!!

@fortheregm1249 4 жыл бұрын

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

@frostiimoon 4 жыл бұрын

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

@MBrulla 4 жыл бұрын

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.

@electronicstuff6355 4 жыл бұрын

Man, this video is so cool!

4 жыл бұрын

I really like the way you make great videos

@yukashy 4 жыл бұрын

WoW... Nice project! Hugs from Brazil. 🇧🇷

@ilegalanimacion 4 жыл бұрын

My respects man! Just wanted to know how you learn all this!

@charlysstore 4 жыл бұрын

good work, in my opinion the best case by connectivity in KZfaq

@contra81 4 жыл бұрын

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

@juseth2 Жыл бұрын

Very nice video!! Great info!

@chronon4130 4 жыл бұрын

Looks nicer then most of the small power supplies on the market. .

@philliptoone 4 жыл бұрын

I just found this video today and liked and subscribed.

@anandmagsardorj3186 4 жыл бұрын

Woow, your project is so amazing

@Ivar1231 4 жыл бұрын

This is next level stuff 👍🏻👍🏻💪🏻

@PolakeXD 4 жыл бұрын

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.

@grizmileham7029 6 ай бұрын

This was amazing, thanks!

@elrickking9293 4 жыл бұрын

Thank you for sharing this.

@SeanLynchXY 4 жыл бұрын

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...

@rohithnechikkunnan8374 4 жыл бұрын

Beautiful project 👍

@muneebashfaq 4 жыл бұрын

Beautiful Project

@Wil_Bloodworth 6 ай бұрын

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.

@Vbeck56 3 жыл бұрын

Dude, Great work. You inspired me to make one.....

@danielwood3518 4 жыл бұрын

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.

@kennmossman8701 4 жыл бұрын

It is a Schottky diode but a power silicon diode will also work - it just has a higher voltage (0.6 versus 0.2)

@ProfLuisHerrera 4 жыл бұрын

I dont know how i get here, but im happy now, new sub!

@Skagenin 4 жыл бұрын

This is an excellent video, i am going to build one, thank you :-)

@DavidLeeMenefee 4 жыл бұрын

Very good! thumbs up THANKS

@aksdiyprojects1999 4 жыл бұрын

Good and neatly project.. keep it up..i loved it..

@pdk005 4 жыл бұрын

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!