Build a Simple Power Supply

[@ssn90]

Seriously this is one of the best ever presentations available anywhere on the web

[@NHGeneral]

Are you a teacher or a professor? I don't know but your way of teaching is very clearly and because of that, it make things understandable in every tutorial. You must have some kind of teaching degree.

[@tinkmarshino]

I built the old atx power supply with you.. But I seem to be running out of space so I am going to move the old power supply to my other bench and build this little one for my main project bench.. Thanks Bill. you don't realize how much you have helped this old man learn new tricks.. Carry on, take care of yourself and enjoy the heck outta life!

[@NewAgeDIY]

tinkmarshino / I’m also short on bench space so I’m taking out a parts tray that’s about the right size and installing it there. Not a perfect spot but it will work until I upgrade my shop.

[@tinkmarshino]

@@NewAgeDIY Dale, my problem is that at 67 I am just starting and didn't know what I would need and what I would not.. It turns out What I do need is more area so I built a bench area for experimenting on and then needed one for building on.. ( I am lucky and was able to build a room onto my house for my computer and electronics stuff..)I am getting my room done slow and sure.. Good luck on your shop upgrade Dale.. That is always a fun project..

[@NewAgeDIY]

tinkmarshino / thanks for the positive feedback. I have worked with computer and electronices for years. Spent some of my time working as a Apple certified bench tech and picked up some Microsoft wallpaper along the way. Retired a few years ago at 60, now pushing 71 this year. DIY / Making community has helped me out in keeping up with the latest technology. Only lately ( about 2 years) KZbin channels have helped me out in understanding the newest low cost maker technology like SBC. They have provided hours of enjoyment building new systems or Maker projects. I'm glad your getting into it now, I'm sure you won't be disappointed.

[@tinkmarshino]

@@NewAgeDIY heck Dale.. I just bought a power supply off of amazon.. It was only 50 bucks on sale and it would have cost me around that to build the other one.. yeah I know.. "buyer beware!" and homemade is better..

[@NewAgeDIY]

tinkmarshino / yes, it can be frustrating sometimes building something only to find something better for less. Normally I try to modify the build by add more features. I sometimes end up overdoing it and spending more money on the whole project trying to make it better. It’s challenging but rewarding at the same time.

[@jlucasound]

I love your graphics. It shows point to point. No confusion. You are so good. Thank You.

[@henrybartlett1986]

I could watch these all day, absolutely brilliant.

[@jlucasound]

This man lays it right down on the mat.

[@MaikKellerhals]

I AM watching these all day ;)

[@knpstrr]

kzbin.info/www/bejne/oYKVeIB_ib6ZeaM heres the one you want

[@tartarianhobo7741]

Put the playback speed x 1.75 ... thank me later. Thanks for all your videos, a gold mine of knowledge..

[@skipperay]

You're the teacher we needed at school.

[@marcdraco2189]

I love this guy. I keep saying it but he's just the greatest!

[@johnvirgin405]

Fantastic little project to make use of one of the old lap tops chargers I have hanging around that I refuse to chuck away. Thanks for the content. Brilliant as ever.

[@diopm2548]

This is my first electronics project. I re-purposed my Dell XPS charger (who had a silly-mounting DC jack socket, and making a mounting bracket so I could mount it on the case took more time than the actual soldering/putting together the parts.....), learned a bunch about drilling into plastic, mounting stuff onto the box, testing it with my multimeter etc! thanks very much for the idea and the tutorial, can't wait to use it now!

[@Javaman92]

I swear I looked to see if you had any link to a component list. NOW I see it. Geesh. The golden years I guess.

[@jlucasound]

Never "button" it up, until you thoroughly test it. That looks awesome!

[@robertcartier5088]

As the use of extra buck converters for more fixed voltages affects the current draw on the laptop power brick, it is recommended in the video to use them sparingly. It occurs to me that one way to add as many fixed voltages as needed would be to have each of them on a separate switch, so that you can put them in-circuit as required without necessarily overtaxing the overall draw on your power source with modules that are not being used. ...don't mind me, just thinking out loud. ;-]

[@BADALICE]

That P.S. is really "clean." I prefer things like this to store bought any day. Nice Job. I will enjoy making one just as much as you did.

[@hamradio3716]

The variable supply has a current limit feature as well. Very useful. Excellent, as usual

[@jmvillalobosify]

You might want to add a note to warn people there are a large number of very similar variable power supply modules from China that look exactly the same but use either AC or DC as input. Your solution assumes the module uses DC input. Great video ! Keep them coming.

[@mikepeters6953]

Very conservation minded and functional.

[@RobMods]

Thanks for the video! I built one just like this about 6 months ago. I used an old 32V printer supply. It works very well and was very cheap. The hardest thing was cutting neat rectangles in the plastic project box. Drills and files are good, but a sharp chisel works well on ABS too. The only other thing I'd recommend is placing your terminals 19mm apart. That way twin banana plug adapters fit. Cheers...

[@NavinBetamax]

@Rob Mods..... What is the output current capacity of the old 32Volt printer supply...?

[@RobMods]

@@NavinBetamax It's from a old (15+ years) HP printer I threw out a while back. 1Amp, if memory serves...

[@NavinBetamax]

@@RobMods I guess the current rating won't be enough. Use a Laptop power supply or Mod a hacked UPS transformer. If it is from a lazer jet printer, the current rating would be high....but most lazer jet printers have inbuilt power supply which also powers the heater . i suggest you use a laptop power supply !

[@richardwillis4880]

As many tech videos that I watch and I just now found this channel? DroneBot Workshop is AWESOME! Great project! But I'd love to have one more output for 12v automotive power also. ?? Like enough amps to run a CB or car stereo.

[@robertcartier5088]

First time seeing a Mastercraft multi-meter similar to mine in a YT video... warms my Canadian heart! ;-]

[@englishrupe01]

Just for you......enjoy! here: kzbin.info/www/bejne/mqS1hY2ZlJmmjqc

[@robertcartier5088]

@@englishrupe01 Haha! Thanks!

[@h.k.6749]

Hi my friend, I am from Austria and have followed a lot of videos from you. The way how you explain and show the things are perfect. Also it is very easy to follow your speech for an foreigner. Good work. br henry

[@soumitradey8208]

Wow! So cleanly done! Just one suggestion, heat sink required over the 5 v variable supply, the IC heats up..regards

[@Dronebotworkshop]

Thanks a good idea. I didn't really observe any heating, but again I didn't run it for a really long time.

[@abhijitborah]

@@Dronebotworkshop Buck converters are quite efficient, very little energy wasted as heat (energy).

[@soumitradey8208]

@@abhijitborah right, buck converters are efficient, but the one on regulated supply with 5 v type gets heated , it can deliver 5 A max, so application wherever below 3 A is fine above it gets hot, in amazon india it comes with a heatsink supply..

[@leeames9063]

I am all about re-purposing / reusing any thing I can in my projects. Thank you for sharing your knowledge. Ubuntu my friend

[@Slushee]

This is such an elegant solution! I have like 3 of these laptop power supplies in my e-waste bin! And I still don't have a lab bench powe supply for some reason so this is great! Oh and I can 3D print a case for it too so... This is going to make a great project.

[@billywhizz6965]

I have just been looking at these variable power supplies on e-bay. I am not sure yours is of the same type but it states on the instructions not to use it to charge batteries or power capacitive loads. This would lead to the battery or capacitor feeding current back into the unit and probably causing damage to it. They advise using a diode so that no reverse current can flow.

[@borsi99]

I really thank you very much for this project! Everything is explained in detail and very easy to understand. Where did you geht this wonderful looking plastic case? I hope you go on... Boris🇨🇭

[@paulinopartoza185]

S

[@greenb1a]

I think it's called the project box and can be purchased in most electronic parts supply store

[@Rouverius]

Great idea. I've even got an old laptop power adapter on hand. Thanks.

[@hds9440]

Dear Mr Incredible Dronebot, I had to write to you to personally thank you, but to also congratulate you for the great channel that you have created. You are like a guru for us more humble mortals ! :-) One week ago I didn't know what the hell an Aruino Uno was, it sounds like an Italian car..!! Anyway, I have ran my own business for around 30 years and have entered this incredible digital world. and thanks to you, and your patient and professional style of tutorial, (and hours and hours of trials & errors!) I have managed emulate some highly successful projects with stepper motor control. The more successful my projects go, the more confident and hungry for the next project I become. What you do is more than helpful, its a blessing. Is it possible to get assistance from you with any of my serious professional projects re connecting up and sketch etc? With my thanks & regards, Harry, from London UK

[@jlucasound]

Isn't he so good? We should call him "Professor DroneBot".

[@Advil1024]

I found some nice project boxes online yesterday that have a flip down leg in the front so you can stand them up at an angle, just like any other device you'd have sitting on the work bench. This project would be perfect for one of those.

[@Advil1024]

With your permission I would like to link the enclosures I've found in case anybody considering this build wants to see them.

[@guruprasadh8468]

Fantastic collection of Tutorials. Thank you. I request you to cover topics associated with the Teensy 4.1 controller along with possible applications using it.

[@gatoruss62]

Very informative video. Well done, and I look forward to viewing others. One question -- can you provide some detail on where you purchased your enclosure? A link would be great if you have one.

[@ahmedticnian7329]

thanks, you mr for the knowledge and clean excellent videos as I am an electronics technician especially home appliances but still I watched and your workshop

[@codygaudet8071]

FANTASTIC VIDEO! HIT THE NAIL ON THE HEAD! YOU'RE THE MAN! KEEP IT UP!

[@Crusty_Camper]

I am making a slightly modified version of this power supply in that it will have three fixed voltages, each with a separate buck converters, plus the variable converter as you have in your video. I want to make sure it stays cool so I am thinking of adding a small 40mm fan which works off 5v at 0.18A. Would you suggest this should have it's own buck converter supplying it, or could it run off the 5v converter I am installing to supply 5v output? I don't want to mess up the output from the fixed 5v supply. Many thanks, Peter on the Scotland/England border.

[@ZookeeperJohnG]

I LOVE this idea, now to make my own with three outputs ;)

[@vogel431]

You have a great channel and you're are a good teacher, but please, could you leave some links where you buy your stuff.

[@cdc2484]

Two questions... 1) if you only want the variable, do you need the buck module at all, or can that be removed from the diagram?, and 2) using your previously built cpu power supply, could you use one +12v and one -12v line combined to feed the var in on the regulator?

[@AHumanBeingbeing]

Thank you for your videos! Im brand new to electronics (Im a computer programmer) and stumbled across your videos about Arduinos and loved it! Make my own electronic stuff, awesome sauce! Do you have a parts list for this build? I know nothing :)

[@Javaman92]

I found them and posted them as a comment. Personally I'd not do the 5v just go with the variable.

[@ShahZahid]

@@Javaman92 add a fan instead, thats what i did with mine, 3d printed a case, added an internal psu, and a noctua fan and its pretty awesome as a secondary psu

[@bdee1084]

Are the adjustable buck converters found in any house hold items

[@timfoster5043]

Your videos are detailed and to the point. Hats off! Subscribed!

[@uMpzZ26e03]

Copy of contents, here you can click to get podituoned in video: Power Supply Design & Components - 5:56 Wiring Diagram - 6:42 Getting all the parts together - 7:54 Testing the Modules - 11:44 Building the Power Supply - 16:15 Testing the Power Supply - 21:16

[@Readbooks6800]

Liked every small detail 😊

[@ElieWar]

Thank you. No fan? how much max current before one needs a fan in this case?

[@bukalex1]

One screwdriver on the wall is slightly sideways!

[@TheRealFrankWizza]

More than one, damn that's unsettling.

[@jimkobler8434]

I saw that too!! Totally messed me up! What did he build again? Love the project. I'm sourcing out the parts tonight. Thank you.

[@lelandclayton5462]

I built something like this in the past. I used a beefer Buck Converter that can handle five Amps and added a USB-A socket for my Regulated 5+ Rail. I replaced the Multi Turn Pot to control the Current so the Current can be limited. I also have a Fuse inline with it and a Output Switch to control the ON/OFF state of the Output. The Variable Module doesn't have a Fuse since it has built in protection. I'm currently building a new Power Supply that will be a Linear Supply and will have six Variable Outputs from 0V - 24V. I won't use the Buck Converter Modules but some cheap Power Supply boards I found on Amazon and after buying one and tested the heck out of it I will probably use those. Still debating on the Meter, dunno if I should go the Arduino route or have six Panel Meters.

[@Gazzyb2071]

Hi, I would like to add a power on/off switch to the power supply. Could you please tell me where it would need to be connected? Many thanks

[@whollymindless]

If I set a fix voltage on an adjustable buck adapter, I like to drop a bit of hot glue on the trimmer to indicate that it's set to a specific output and prevent "accidents".

[@Gunzee]

It's within a case, how will an accident occur?

[@melplishka5978]

Could u drill a hole over the 5 v variable adjustment screw and if needed just adjust it for 3.3 v and so on ?.

[@normancorbett9488]

Is it possible to run a prefab buck converter in "series" with a boost converter (or vice-versa)? Maybe this is a silly idea

[@TojTekSpeaks]

You can actually just get a buck boost converter

[@bdee1084]

Would small resisters smoothen the current?

[@burak3259]

Can i use this beauty in a portable led light panel ? For photography and video light purpose ? If i can hook up a few li-on batteries to this power supply it will be amazing for portability, also screen looks cool ! Great job.

[@chol5808]

can i use this dc psu for voltage injection on a pcb for shorts repairs?

[@tedkrapf1302]

Another great project in the Workshop! Can I ask where you purchase your cases/chassis from like you used in this project? Even more specifically what terms should I be searching for on Google/Amazon. THANKS and keep up the great work with your channel. I've learned so much from you :)

[@StephenFarthing]

Thanks for another great video. If you use water based acrylic spray paint (from a car parts place or a hobby model shop) it drys quickly . It might need a couple of coats. Then give it a coat of spray varnish.

[@slabua]

An ON/OFF switch is always nice to have

[@zzss9595]

Hello, we have an agricultural land that has no electricity. Now, if we want to use a motorcycle battery, which is 12 volts, to get different currents, such as 10 or 12 amps, what transistor should we use?

[@stepheneckles2345]

My only question is you didn't show plugging in the power supply cord. I also only saw the input cord for the computer cord and didn't see the output cord when the parts were on the table. I am assuming you need the entire power cord. You are right I have a couple old ones. I have one that has the barrel plug broken off exposing what looks like a fork with 2 prongs but it also looks like it is one piece (I don't see any insulation) and if I plug it in I don't want to trip a breaker. This is much easier than many of the other builds from computer power supplies. Thank you great video

[@AIskolen]

Thanks for your videos! Do you have some tests of the USB-C PD power outlets? Thinking of using a big USB-C power bank to drive my High-End DAC. But what is the quality of the USB-C outputs of a power bank?

[@abdelhamidkhattab3325]

have you observed output voltage under load and no load conditions by oscillicope if you have done it please tell us how it is going as I have been curious about it and have no way to check converters does make a lot of ripples espicialy if there is no filter and it could be harmfull to devices?.

[@johndelianides8383]

Most 19v laptop power supplies have a 7.5x5.0 connector. Is there a source to buy the female connector to be used with this project? I have several 19v supplies, but no way to connect them to a project like this. Thanks.

[@sergevilleneuve1715]

Would it be a good idea adding a fuse in the DC circuit?

[@SX1R]

Absolutely.

Very Nice Project!! I Never throw out a wall wart power adaptor if it's working. You just never know when it might come in Handy!!

[@jappperon7012]

how much harder would it be to make this but with 2 or 3 outputs to power multiple at the same time. wish i still lived next to the electronic repair surplus, they always threw out such fun bits i would break down into usable parts.

[@frontier9]

The workshlop is awesome. I'm sorting out my workbenshlch

[@henrikemppainen2511]

Would it be OK to tie the grounds of both outputs together?

[@Gazzyb2071]

Can the same power supply be made with a buck boost converter module???

[@dharma.vibrates]

Sir, can we make this using the transformer-based linear variable dc power supply?

[@charlieeverhart6646]

Question: What keeps you from using too much volts, like say turning the varible to 19v and using the fixed at the same time bringing it up to 24v. I under stand the varible buck converter has an over charge circuit but does the fixed. It looks like the fixed is wired directly from the power pack. Also would adding an inline fush help protect the buck converters? Love the idea, I have sever of those power packs collecting dust right now.

[@marcosherculano5944]

Great vídeo, I´m from Brazil.

[@steve6375]

Thanks for the video. I would appreciate your thoughts on using two of these DPS units on the same power supply. AFAIK they monitor current using a shunt in the 0V rail. This means if two DPS units are used and connected to the same load (say 5V and 30V to an amplifier circuit) then the 0V low-resistance shunts will be in parallel so the current readings will not be correct. Also, in your box, if you used both outputs to power the same load circuit and connect both 0V to the load circuit, there would be 0A current reading on the DPS meter. If you do not connect the 0V from the small 5V buck board, then the DPS Ammeter will show the combined current used by the load circuit.

[@AndersJackson]

I guess that 5.0 V and 3.3 V would be the two fixed voltages one might want to get from this power supply. One maybe also want to have a small fan to vent the case. But as usually, a great video.

[@sumedhburbure4173]

Great video as always!

[@ChristopherSalisburySalz]

Would this power supply work for electrochemical etching and electrolysis?

[@melplishka5978]

Can we make with a variable smps as well?.

[@dgoz33]

Wonderful project... I am interesting to download the PDF but it doesn't exist anymore. Could you upload it again please? I like to make my own power supply, thank you...

[@broyencarpenter3740]

Great Job

[@bssgkmsd8]

Could you add a link to the case you are using? I would like to purchase the same one. Thank you

[@prasannas5071]

Thank you for sharing this project along with details. As a begginer this is what I have been searching for. Simply superb and very well explained. I tried to look for some sites for cases but would u suggest how I can get the cases with different sizes. I have this buck converter but it produces lot heat does it require heat sink and how do I add heat sink. Thanks

[@cartoon-network814]

excellent video - the ATX power supply needs a bit more features like a combing the variable part with the ATX power supply? thanks your videos are very professional.

[@johntilghman]

Nice DVMs in the background. Can we know the make/model? Nice and blue. :-)

[@fredt4977]

Love your videos. clear and concise. 👍

[@jimbooth2010]

Another great project! 👍

[@capecoaster69]

Excellent job

[@electronic7979]

Very good and very helpful project 👍

[@Austin1990]

Sweet. I was wanting to make something like this as a frontend to an ATX power supply for supplying quite a bit of power. I didn't know that variable converters with displays existed. I will have to check those out. Hopefully some are available that could do current output in addition to the voltage output.

[@benjaminramsey4695]

The current is just what gets drawn, not something you would set. You do need to be aware of the max it can draw though.

[@Austin1990]

Benjamin Ramsey I am talking about a current source, like to easily drive LEDs. It would change the voltage so that the specified amount of current is provided. It would be like using current limiting resistors, but it would be dynamic. And, current limiting would be an amazing feature on the voltage source.

[@benjaminramsey4695]

Okay, yeah that would be a good application, makes sense.

[@mykalimba]

Reminds me of when I built several fixed 5V power supplies, with most parts coming from Radio Shack (R.I.P.). There we no off-the-shelf modules at that time, and we built everything from the mains on: transformer, bride rectifier, 7805, etc. And I've always used stranded hookup wire for electronics, never solid.

[@Dronebotworkshop]

I miss Radio Shack! I built a lot of linear supplies in the 70s and 80s with big bridge rectifiers and 3-pin voltage regulators.

[@RoyMaya]

Very nice project! I think I'm gonna build one my self. Thanks.

[@IrishAnonymous01]

What gauge of wire is used for this project?

[@johnyap4605]

Hi, How to repair an ATX psu with 10 volt instead of 12 volt as stated on the psu. Tks

[@bdee1084]

How can get the smoothest current from one of these for lowest cost.

[@itcssncii4808]

can i use the maximum 19v? becasue i want use it for voltage injection in a laptop

[@MusicwithMohit]

@DroneBot Workshop: Thank you very much! A lot of electronics require negative voltage...like I require + and - 5V for my audio preamp circuit (for testing). How can we get +5v, -5V, and neutral?

[@fjalarsigurdarson4862]

The ATX (PC) supply has these voltages

[@nedeljkooctenjak9690]

nice & clear , well done

[@bluegizmo1983]

What's the point of adding a fixed 5V output when the variable output can already do 5V output?

[@thompsms]

The point is you can be using the 5v supply for running something that uses 5v, while you are using the variable supply to run something else.

[@bluegizmo1983]

@@thompsms ok yeah I guess I can see that as possibly useful for some people. Personally though I have never needed to power two separate thing at the same time with my bench supply.

[@thompsms]

Sometimes a project can need 2 voltages; say 5v and 3.3v (for sensors) or 5v and 12v (for motors) for example.

[@jamesdemaio5234]

Hello, I am going to build this power supply, and I was looking to add a lighted ON-OFF switch in the back, but I am having trouble finding the appropriate lighted switch. The ones for DC current say that it needs 12V to power to light in the switch, but the input AC/DC converter I will be using to power this is rated 19.5V @ 3.9A. What type of switch can I use for this?

[@SamCarleton]

I have a 12v 7.5Ah battery I would like to charge off a bigger 12v battery. I’m looking for a circuit to make a 12v to 12v charger, have you ever don’t a video on that?

[@train4905]

Dear sir.thankyou so so much indeed.for sharing your knowledge with us. This is an absolutely superb design. Its exactly what i needed. Easy to build.not having to design boards. Its all done for you. I will most definetly be building this set up. And thankyou most kindly For your most exellent Indtructions. Clear concise.and above all easy to understand. Keep up the exellent work sir.well done.im a new subee. Thankyou most kindly sir.steve from the united kingdom.

[@sanderromer6490]

Thanks! How many ohm load do you use?

[@cartoon-network814]

could you design a variable/pedal operated power supply for a sewing machine? I think it varies the voltage very precisely so that motor speeds are controlled accurately? Can have multiple applications like power tools etc. or operating other motors?

[@beef0678]

His voice has cured me of my insomnia, thanks!

[@davidgonzalez3008]

😬😂😂😜

[@TWOKDOK1]

Unkind . How does your comment add to the bounty of humankind? If you don’t have anything useful to contribute...don’t contribute.