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How Power Supplies Work - Turbo Nerd Edition
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- Published on Apr 1, 2023 veröffentlicht
- Thanks to Seasonic for sponsoring this video! Buy a Seasonic Power Supply.
On Amazon (PAID LINK): geni.us/MkfNi
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Additional Info:
Linear PSUs: • Video
Transformers: • How does a Transf...
Power Factor: • Power Factor Expl...
Soft Switching: www.onsemi.com/pub/Collateral...
MOSFET Power Losses: www.ti.com/lit/an/slyt664/sly...
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CHAPTERS
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0:00 - Don't do this
0:44 - Why we need DC
1:30 - Transformers
2:30 - Single Diode Rectifier
3:00 - FULL BRIDGE RECTIFIER
3:35 - Why you shouldn't use a Linear PSU
4:09 - Computer PSU Tour
8:29 - lttstore.com but Linus gets a bit too into it
8:37 - Are Japanese caps good?
9:43 - PSU Capacitance vs. Efficiency
10:40 - Modular cables and why you can't mix them
11:09 - ATX 12VO
12:00 - Mother Earth is cool
12:30 - TY
12:39 - Tongue twister 
Science & Technology
FOOOOOLLL BRIGE RECTIFIAAA!! Is the right way to say it!! Thanks for sharing!
What about ac rms? What about voltage regulation after converting? What about ferrite core transformer comparison to iron core? What about the power of resonance frequency?
I was just about to leave a message like "Linus! Please do a collaboration with ElektroBoom".
Thanks for destroying my dreams, Mehdi :-*
I knew you would show up.
lmao
as an EE student i can relate to this
@Slumberland.mp4 same man 12th grade physics, sometimes im even confused am I still in high school or a engineer's class xD...
@Ara CoinThank you for agreeing with my subconscious! I don't know much but I was starting to think I knew even less than I think I do. . . Fuck Descartes!
@Ara Coin linear power supply just means there is no switching involved, linus' part is still correct and imo the most understandable, all it is missing in practice is a simple voltage regulator like a 7812 but the more important part for the big picture is the bridge and transformer.
an important characteristic for the efficiency of SMPS is that they can change the period for which the input to the flyback is on, connecting it to mains for longer for a heavier load and relaxing the mains when the load decreases, with the decision being made using feedback from the output, kinda irked me that they found the time to mention varistors but not the defining characteristic of a switched mode power supply. if you gonna be a know it all smartass, do it to a college professor or something, not in a general audience basics video.
If you can RELATE to this, then you need to brush up your fundamentals and retake your coursework.
@Br1 Kenya
That "60 plus turd" power efficiency rating actually made me laugh 😂
@Paul Frederick At high-loads, the rectifier caps suddenly need to charge quickly which induces charging losses on the caps - the caps have internal resistance and thus high charge/discharge currents waste power. Hence the need for PFC correction - it's easier to frequently top off a cap slowly than to charge it quickly occasionally.
An unregulated supply should be much more efficient than 60. Where precisely are the losses? When you use a linear regulator those are inefficient. But that's not the circuit he was showing.
@Y agreed.
Sounds like a GPM
7:35 "In layman's terms, this 3,300 microfarad capacitor...."
Thanks. I just realised I'm not even qualified as a layman.
@Inservio They are cool, they kinda literally store electrons for use at will.
lmao that's actually funny.
@papercut except this specific capacitor doesn't save energy in an electric field. It's an electrolytic capacitor so it's more similar to a battery in that it stores its energy chemically. It just has a way smaller internal resistance than a regular battery, making it behave similar to a capacitor. That's why electrolytic capacitors have polarity and regular capacitors don't
It’s alright. That part was a bad thing to include for a layman’s explanation - that one’s on them.
Think of it like a water-tower - when there's enough power it charges up and then it discharges when there's too little power
As an Electrical Engineer I have to say, Well done Linus, this is your most technically informative video yet. Would love more of these.
I am interested in majoring in that. Is it good? Does it pay well?
More turbo nerd - this series is awesome! Also, large props to Seasonic, this is an excellent piece of sponsored content, and it does actually make me even more likely to choose their products in the future once the GPU prices return to normal.
As an electronics engineer I totally approve of this and want more of such turbo nerd edition! Great job LMG
Only thing I noticed was that he Called us Electrical Engineers... Totally different Class of Engineering, but it's Okaaay.....
As an EE you should know how many mistakes are in this video :/
it coulve been more detailed but that would cause people to die of nerdiness
Bro I took a baby electrical class and this stuff is *not* "such turbo nerd" it's pretty average
I was going to post a simular message "As a Electrical Engineer...". I love the segment.
Great execution!
When I read the title and started the video I was preparing myself to close it after a minute because such a topic can be incredibly boring if not well presented.
Switching the host throughout the video, with clear topic separation, and without hectic cuts, gave the video a pleasant flow.
Probably takes a bit of courage to post "such" an educational video in the current YT environment so thanks for the well-executed, effort
and for fulfilling your guy's influencers' task to also educate.
(:
Yes, switching hosts helps... Linus's part had horrible mistakes, Alex's was almost perfect, and last part was bullshit.
Felix retention Pond video Julio
Petition for Turbo Nerd Editions to be made as a weekly or bi-weekly series, this is simply too good...
As a sophomore in EE, and a frequent viewer of the channel, I very much enjoyed this content. I think you made the topic very interesting and appealing. Please do more!
I don't really stop to comment on youtube videos that often, but I really want to sat that I love this "Turbo Nerd" series. That's kind of the perfect balance of entertainment and information to me. Good work LMG, and greetings from Italy!
It's awesome to see that amid the necessary sponsored videos and digital eye-candy we still see you guys turning out educational videos. Seriously, stuff like this is awesome.
Oh my God... I can hear Mehdi from Electroboom saying "FULL BRIDGE RECTIFIER!!" in my head...
Ideeed , everyone expected linus yell FULL BRIDGE RECTIFYAAAAA ! ! !
I hear it in my mind as soon as I saw the single diode rectifier and knew where it was going.
Same
It's not a dumb single diode rectifier, it's a FULL BRIDGE RECTIFIER
@Mateus Maciel 0️⃣0️⃣ I mean they're merely similar
Awesome vid! Do more educational stuff like this! Go into depth on more stuff like this. You could have a whole video on how that switching resonance thing works. I had to use that the other day and it's so weird. I need to know how it works.
@Linus Tech Tips hello AC, you are 1 zoom class away from educating millions. It's free real estate.
Lol a video about circuit resonance would require me to understand it which I don't think is happening anytime soon -AC
Hearing power factor correction took me back to my EE clg days. Used to have a tough time understanding why the hell they are not in sync. Understanding the full operation of power supply might need one to have master degree. Great job in explaining the basic concepts so easily.
I'm impressed you guys mentioned the secondary components like filters and PFC circuit. Good starts for anyone wanting to learn more. Also, that soft(or resonant) switching is incredibly important part of it all to let us have compact and efficient PSUs.
Wish I had lecturers this cool in college! Thanks mate! 👍It's nicer understanding how things work when they make it relative to interests and uses
These Turbo Nerd things are my new favorite videos on this channel =)
You could add “full bridge rectifier” voice by ElectroBoom. That would make it more epic and +3 to coolness
I knew that the full bridge rectifier was coming I was expecting electroboom though sad 😢
Yeah especially since they’ve worked together in the past.
Yeeeess
Ngl when he said it, in my head it was the only thing I heard
FULL BRIDGE RECTIFIER!!!
I want more informative videos like this. Do motherboards and ram next. Love it
This is a great kind of video to add to the stuff you post! This level of educational content is really awesome to have.
Absolutely love the Turbo Nerd videos. Keep em coming!
You guys do a wonderful job. Thanks a lot 😀
This was a well-made and very informative video. Thank you for this. I also appreciate the shout-out to ElectroBoom as he teaches electricity.
love the turbo nerd idea. would love to see more in depth content like this.
Yeah same! It's cool content
Couldn't agree more!
This is the height of tech youtubing. I'm proud of the ltt team. Awesome video!!!
You guys should more episodes like this for stuff like microphones and speakers.
Between Steve starting to do power supply testing and this, I feel like we're hitting a new age of power supply reviews.
I really love this new educational content ltt is pushing. Its such a nice refresher
Great video. I enjoyed the multi presenter format. More please!
As an EE designer, I appreciate the time you guys spent to get this accurate as possible while keeping the attention of those watching. Very well executed LTT team.
And they somehow get us engaged in checking out other Ytuber also, just massive appreciation
It's like high school all over again... Fun fact: In my high school electronics class I built a strobe light kit that included building a power supply with a transformer and fairly large capacitors. I succeeded in shocking the shit out of myself.
More tubo nerd content please! This is a great series.
Please more turbo nerd videos. I would love to learn all the nitty gritty details of how these things work and what they really do.
More of this content please. Well done LMG.
This is an awesome video! I look forward to more content with this format.
Linus: *mentions a full bridge rectifier*
Me: *deep breath* "FFFFUUUUUUU-"
@Adithya Nugraha MOTHER OF ALL FULL BRIDGE RECTIFERS!!!!!
Same
FULL BRIDGE RECTUMFRIER
THAT'S RIGHT IT'S NOT A DUMB SINGLE DIODE RECTIFIER
FUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU -LL BRIDGE RECTIFIER
I liked this multi-host format video. Maybe for another collaboration with ElectroBoom you guys can attempt to make your own power supply :)
Make more of turbo nerd edition videos please ... Loving these !
This is a phenomenal video! I work in power generation, and it was really nice to see how well you explained a lot of this. I completely understood everything up until Alex talked about the MOSFETs and such lol.
I can't believe you went into power factor and VARs, that's awesome.
If these Turbo Nerd Editions are gonna be a thing, I'm all for it
I really like these turbo nerd videos
keep 'em coming and don't stop
I love these kinds of videos from LTT - legitimately the most enjoyable type of content bc they explain it so well! Wish EE degrees were taught like this
the mobo changed from 0:19 to 0:29
Great video, I would love to see more in depth videos like this one on LTT.
Great job. Really liking the simple explaination of how power supplies work. Quite a bit of research going into the script.
Video, audio and power are the things to go big on. Everything else ages like crazy.
Doing a university degree in engineering and I had to do many modules in electrical engineering. When he said "I won't even pretend to understand how the maths works"... I felt that.
As a computer hardware engineer this turbo nerd series is literally my life
We need more of these Turbo Nerd editions
Very informative! Can you also explain what difference there is between regular and 'digital' PSU's?
I am watching this video while my physics teacher is teaching about conversion of ac to dc current... Linus did it better.. but I was like "universe want me learn this😂"
The universe has big plans for you young man.
This video was so much better than I expected and I thought it was going to be pretty solid to begin with
Big fan of these turbo nerd videos. Really looking forward to the next one😊
If only this video came out 3 years ago, I would've enjoyed my lessons more 😆
There's a very specific joy and excitement you get when you watch a video talk about something you went through university for and understanding everything that was talked and referenced about. As nerdy and boring the topic sounds, it was a super engaging video for me 🙂
I love this kind of explanatory videos. More turbo nerd stuff! It's awesome!
Can i just say how much i love that you're using the 8bitdo mini controllers for your teleprompters? :D
The turbo nerd episodes are awesome!
Thank you so much for this. Electrical engineering student. Struggled through a class on power supplies. Several lightbulb moments throughout this video!
Can we get versions of this video for other computer components, sponsored by other companies? This was really interesting, seems like it has a lot of potential
I like how GN showed us how power supplies work earlier today “Coincidence? I think NOT!!!”
@Thomas Phillips Can definitely see that
@Leo Mark 👍
@DubNDodge what Linus walked you through, that was covered in my Grade 9 and 10 High-school Electronics classes back on 1982/3. The advanced maths came my first trimester of college.
@Leo Mark Linus' video: 13 minutes.
Steve's video: 25 minutes.
Depends on how much free time you have I guess.
If you watched this video and didn't watch GN's video about PSU, you're doing it wrong.
This may just be me, but for the next installment in this series, I would love to see a deep dive into different kinds of fan bearings and why some are louder than other and why it's bad to free-spin some, that kinda thing.
Okay this format was pretty cool I liked having the multiple speakers to kind of break things up a bit it made paying very close attention a lot easier and I was able to actually learn something
As an electrical engineer, I confirm everything they said. It was also a very nice video!
I know it takes weeks for both you guys and Gamers Nexus to get your videos finalised and published. But it does sure seem weirdly coincidental that within a couple days eboth release power supply videos.
Did you guys coordinate this effort or was it coincidence?
Wow, finally an answer to this question, ever since one of my gpu cables failed. I had a really hard time finding a suitable replacement, too. Hell, even finding out what was suitable was nigh impossible.
I want to see more of this video for two reasons: more nerd tech talk and more importantly I want see more of that puppy.
Looks like we need SHORTAGES then and there to make these top channels make such videos..
I love how he explained the terminologies in layman’s term! I fully understand it! Wow!
Wow, I actually learnt something. Thanks Seasonic for sharing the knowledge and thanks LTT for making it not boring :).
I love willies no homo
Yes! More of the turbo nerd stuff please!
You had me busting out laughing when you called the single diode rectifier as "Crap!". In electrical engineering circles, which I belong, it's called half wave rectifier, so I was totally expecting him to say that.
Nice to see Seasonic get some attention. I recall telling one of my friends, who styles himself as a computer nerd, that I was going to get a Seasonic and he had never heard of them.
I just realized, that there should be a Bob Ross version of building computers 😁
@Charles Ballard ⁹⁹⁹⁹
@Doc Ferringer yes perfection
Now we've got one RAM stick installed, so we are just going to give him a few little friends...
@Kaleb Bruwer Nah. Luis comes close, but then he stumbles over some fruit-branded wireless cooling system, and (fairly rightfully) loses his shit.
I mean Louis Rossman is already that
This content is great. Maybe you guys should consider a turbo nerd channel with Anthony fronting it!
Listening to Voltage, Amps, Watts reminds me of the physics classes from a long time ago, love this video concept!
This was a great explanation. Thank you Professor Linus!
This video should get lots of captions in all languages
I always wondered why the heck we need so much capacitors or dayodes
Man this video really need Arabic captions to show my fellow students how this sh*t works
Well done guys❤❤ so much love
Takes me back to my Electrical Engineering days, thank you for the rectifier refresher :)
I know this video was obviously planned and started weeks ago, but interesting that Gamers Nexus had a how power supplies work video less than 24 hours ago too
I need more of these turbo nerd videos. Please.
Those laughs at the start had me giggling along with them
As an EE major, I love this material. I want more of it!!!
I want to know why an unregulated supply is only 60% efficient. Where precisely are those losses occurring? Now a regulated linear supply is inefficient. But that's not what was shown.
I love these educational videos.
Love this long-form, in depth, tech education format!
These are actually amazing. Linus found a way to bring back his roots of the channel all while involving the rest of their team and their expertise. Love you guys long time
This type of content is the SOLE REASON!!! I am a follower of the Linus. I loveeee when he takes us to school on any tech concept. He does it WELL!! I wish he was my professor.
DiodeGoneWild has done a *really* good video on analyzing an ATX power supply that everyone should check out. His channel is pretty good in general :)
Finally! Thanks for bringing back interesting stuff!
Love this format! Hope to see more. Seems like these could be their own channel.
As an Electric and Electronic Engineering student, I feel happy much attention was put into that aspect of PCs!
I wanna see more of this series,
The Linus segway interruption was amazing! Puppy eddit was great as well
Would be cool if they did this for every component in a pc
I'm tempted to build a linear computer supply... probably get some absolutely crazy stability
I'm learning more from a 13 minute video than i do from 1 and a half hours of science class
Would love to see these type of explanations for every part
8/10 needs more Brian the electrician
Hm
and Electroboom
Thank you LTT, I was planning to replace my power supply soon from whatever Asus stuck in my pre-built, to something decent. I did wonder whether I could re-use the cables. So now I know and I won’t be making that mistake.
You Should do more of this type of stuff.
I love Turbo Nerd Edition Videos! :D