This is one SKETCHY 2000W Power Supply

[@TheOnlyBootlegger]

The "Warnung" is the actual German word for "warning." You can tell it's meant to be one of those multi-language labels because of the Spanish "peligro" below it and the French "attention" to the lower-left. The issue is they didn't put a single other German word on it.

[@Matty.Hill_87]

I was thinking it was probably a multi lingual thing

[@almerindaromeira8352]

Yes, the warning in English is right beside it on the left. No typo there

[@its_cedced]

I think it was a type issue because I don‘t think that Linus can speak German

[@enmunate]

You would think that people from a bilingual country would understand that.

[@MrBlackFiction]

Thats why i clicked the Video in the first place... wanted to know why they put a german word in the thumbnail.

[@philtkaswahl2124]

I love how they arbitrarily labeled it with 95 Plus Gold because 95 > 80 therefore better; but not 100, of course, because that would just be silly.

[@Xeonerable]

who knew a chinese knockoff brand could be so humble and not go all the way..!

[@thunderarch5951]

Well, since it's about efficiency, at least they know you can't have 100% efficiency in a power supply, lmao

[@AdrianOkay]

110 platinum psu: with a stirling engine inside that generates extra power from excess heat

[@danimayb]

No PSU can be 100% efficient, So at least they got that right lol

[@Razz_Putitin]

@@AdrianOkay 100% efficient means no excess heat :P

[@dumpsterdawg]

David: "You have life insurance right?" Dell: "Yes, We sold him multiple warranties"

[@ali99_82]

Yessss

[@user-op8fg3ny3j]

Surprised he wasted money on a policy given how financially secure Linus is already

[@vyvianalcott1681]

@@user-op8fg3ny3j Life insurance is to protect your earning potential, not your current holdings. It covers what he would have brought home to his family for the remainder of his career.

[@alexanderanastas-hill5487]

comment of the day

[@bigsmoke6414]

so, if youre Linus breaks, you can just return him and he will be fixed (imagine indian female voice)

[@jaykoerner]

In three wire 220/240 volt(or four wire for that matter) where the two hots go doesn't matter since they are completely opposite phases and are indistinguishable on the device side, it also doesn't have a neutral because it creates a phantom neutral at the center point of the two phases

[@TealJosh]

Ground on the other hand is absolutely required. Terms neutral and ground are often mixed up in everyday speech.

[@the_undead]

​@@TealJoshbecause in North America they are often the same thing when you're dealing with 120 volt outlets (don't worry about it. It's confusing and stupid)

[@samuelrodriguez6684]

Alex: "Don't touch these" Kyle: *immediate physical contact*

[@sewing1243]

@@BlueHound Unless the PS was connected to power I can think of no way a transformer could possible injure someone (other than a possibly sharp edge or something pointy sticking out of them). Also Linus seems to think Transformers have magnets...since when do transformers have magnets in them?

[@RaiderX303]

They stated early on that both PSUs had been powered off for over a year so we're safe to touch. Normally you wouldn't want to touch as the capacitors could still hold a charge

[@Mbadly]

Like they are propably safe after a few weeks, they are 99,99999% safe after a few month, that being said. Don't touch them they could theoretically still hold a charge but you know, they propably dont

[@--_DJ_--]

Alex: CYA statement Kyle: I know how long they have been on the shelf.

[@flavioernst902]

These are just some caps. Yeah you would get a shock like in the order of magnitude of an electric fence. But not really dangerous

[@TheOmegaAlfa]

It’s funny that PSU testing setup for 6160 USD was missing the device measuring power draw for 30 USD.

[@seushimarejikaze1337]

​@reconz 82299 you dont know work/pain unless youre hammering a nail with a rock xD

[@coolsnake1134]

They would’ve needed a clamp amperage meter on each of the hot legs because those kilowatt power meters I think only work on 120 V if they plug that into their modified extension cord they would fry it

[@jacksonbutterfield9669]

I love how the least sketchy part of this video is probably the 2000W power supply itself

[@jackielinde7568]

No, because I would have taken a 240 V extention cable and modded it with a 120 V female socket, not the other way around.

[@edwardallenthree]

truth. why didn't they just use the pdu from the million dollar server?

[@NikolasOldSchool]

Why you are so scared of 240V?

[@armadillito]

@@jackielinde7568 why? Wouldn't that be rated to a lower current?

[@edwardallenthree]

@@NikolasOldSchool because North American electric infrastructure is unsafe at 120 volt.

[@DigitalJedi]

You can tell Kyle is an engineer by the way he refers to parts. Also the bit about why he hasn't sent a product yet hits home.

[@ao_qd]

I miss these types of "Don't ever do anything you see in this video, but here's some detailed instructions on how to do it" videos. It reminds me of an old video where Linus showed us how to make our own 7v fan speed reducer out of extra molex adapters.

[@TheAdatto]

Yeah use 5v for netative an 12v for postive so you have 7v

[@MrHack4never]

If you dig into the 20/24pin connector, you can also find -5v and -12v to play with, giving you a voltage choice of 5, 7, 10, 12, 17, or 24 volts to play with If you also use the +3.3v line, you have 1.7, 3.3, 5, 7, 8.3, 8.7, 12, 15.3, 17 and 24 volts to play with

[@RedBeardWalking]

@@MrHack4never cool! ........why would I want this? Not being snarky I have no idea what this would ever do for me

[@MrHack4never]

@@RedBeardWalking You can use 24v to fry your fans😃

[@hunzhurte]

Linus did WHAT?

[@wal]

I test car and home amplifiers to show their actual power output because this has gotten so out of hand! Many use “MAX” ratings we call “ILS” ratings (if lightening strikes) 😬

[@minenachos]

Big D in the house. Or is it diriculous

[@KiinaSu]

Even for reputable brands? Because I mean if you buy a 5000W amp from some chinese seller for 30 bucks you can be sure it won't even reach that. It's like these 5 TB USB sticks from wish. But I doubt Yamaha would lie about the output.

[@minenachos]

@@KiinaSu years ago reputable manufacturers Kenwood, Alpine, Pioneer, JVC, Sony, and Panasonic claimed double the wattage for peak envelope power or pep. I believe it was jenson that started the max power. And if you're old enough you'll remember Roadmaster they was the worst

[@Elkarlo77]

@@minenachos But reputable manufacturers had still the sinus Wattage somewhere written down. At least here in Germany (we have great consumer laws which sometime enforce such comparable moves, don't know if it was enforced.)

[@seldoon_nemar]

Dewalt's drills are/were branded "20v MAX"... that was not saying they are 20v tools, they are 18v tools with a surge draw of 20v max... they actually had to change the branding in some places (aus if memory serves)

[@Tyler_0_]

@8:35 "NTC" stands for negative temperature coefficient, these devices are used for inrush limiting. When you first plug the power supply in all those caps will be charged, and without that NTC resister it can blow fuses or breakers.

[@ald3nt3]

i mean it could be used for temperature measurement, but inrush limitting probably makes a bit more sense

[@itsTyrion]

TIL

[@HalianTheProtogen]

SHODAN be praised!

[@rexsceleratorum1632]

@@ald3nt3 For temperature measurement, way higher resistance NTCs are more convenient, of the order of 10k

[@ald3nt3]

@@rexsceleratorum1632 Yeah you're right, just checked the datasheed, it has indeed an R25 of 5Ohm (and like 145mOhm at standard operation).

[@sammorgan31]

I think I would've just made a resistor out of nichrome heater elements to test rather than plug it into all that juicy hardware.

[@TheSecretman82]

But that's not entertaining or suspenseful. While it makes for a better test, this makes for better TV(Or KZbin, whatever you want to consider it.)

[@TotalDbag24]

I mean, they bought a load test center, so honestly they probably put it on that before actually risking all that hardware.

[@sammorgan31]

@@TotalDbag24 I mean, I said "I think I would've"

[@jimmihenry]

15:00 you should have a power meter in the outlet to sensor the power pulled from the wall!

[@LolSho0orTs]

They also should have shown us the temp on that back panel they have a thermo camera, meh .

[@AndrewMuraco]

Also just send it the GN to blow it up

[@adriandunn1596]

@@09f9 An imported one could be both fairly cheap and 220V. True it would have needed a corresponding power socket and IEC lead from a 220/240V country too. That wouldn't be a bad idea though, no need for the sketchy warning label to indicate the voltage.

[@mlw19mlw91]

Yes then he could measure efficiency 😁

[@jimmihenry]

@@mlw19mlw91 He could calculate the power drawn by the computer, if he knew the efficiency of the power supply. As i understand they are estimating the power consumption of the computer... They have no clue if the power supply can out put 2 kilo watt. If they knew the power draw than they could calculate the efficiency, YES!

[@LastKnight0727]

okay, I actually jumped at the point where they pranked Linus when he put his head against the PSU. Send this to GN as a gift to see if they can blow it up with their tester.

[@grozaphy]

Me too. My slow af brain was like wait what, why is he smiling

[@zector0]

Yes, having actual professionals test it sounds like an idea Linus would never entertain though.

[@paulbrown3820]

I'm happy to see I was not the only one.

[@ryanhamstra49]

@@zector0 yeah, a testing lab would be a stupid idea

[@Arthurocha]

Yeah, it scared the heck out of me too XD

[@LimeymanZero]

13:35 Whoever did that should get a bonus or something, that was gold!

[@iClone101]

I almost fell out of my chair when then happened

[@mytwosats3178]

A moment of tru fear.

[@swagatrout3075]

got actually scared there..!

[@Walking_Death]

That's how you make an electrician throw whatever he is holding across the room. Hilarious stuff 😁

[@geekinthehattech]

I jumped and my heart rate when up! LOL

[@ChilenonetoYoutube]

i love how they treat the 240 v cable like high tension or something, when almost everywhere in the world you use it to power your blender at home.

[@WeiFinder]

They treat it like that because its a ghetto style contraption

[@Fenriswaffle]

Watch what happens when you put a toaster meant for 120v on 240v. The issue isn't necessarily that 240v is dangerous (though technically it is) but that this is thorough misuse of cabling which creates an inherent feeling of risk since it can overheat, melt, catch fire, short, etc etc.

[@ChilenonetoYoutube]

@@Fenriswaffle yeah but they use high tension cable (used to power 480v or higher stuff) to power up a simple machine.

[@LuLeBe]

@@ChilenonetoKZbin Because the cable should always be able to handle more load than the breaker, and I'm assuming they don't use the little 12 or 16A breakers for their 240V circuits ther like we do in Europe. So the current could be a LOT higher, hence the bigger cables for these systems. Obviously that cable was oversized for the PC, but not for the breaker.

[@leerman22]

@@Fenriswaffle It's all about idiot proofing stuff when it comes to electric codes, and these are idiots :P

[@Healvia]

"Warnung" is "Warning" in German, they just wrote it there in different languages, not a spelling error.

[@gerritaddiks5098]

Came here for this. I first thought that youtube now started translating the thumbnails.

[@MischievousMjolnir]

@@gerritaddiks5098 Same lol

[@HerrSeelenflug]

But they still didn't put the actual warning text there in German, like they did for the other languages lol

[@MischievousMjolnir]

@@HerrSeelenflug They translated "warning" and then they got scared of German grammar 😂.

[@deusexaethera]

I thought that was "Achtung"?

[@Tilt_TM]

I'd love to see Gamers Nexus put this thing on their power supply tester

[@AC3handle]

This is exactly the thing that I was thinking. Why risk good or even decent components when you have a testing unit that can stress test, and survive any power supply jankness that ensues? Like...mosfets explody?

[@bland9876]

Was about to comment that.

[@davidfernelz]

@@AC3handle because LTT does it the "fun" way and GN does it the legit way

[@lasthamsterstanding]

Yeah send it over to them!

[@Lazirus951]

Was thinking the same thing. Would've loved to know the actual efficiency rating.

[@captainmarshalliii3304]

Linus and Alex executing on half-baked video ideas is by far my favorite video concept.

[@cardboardsnail]

15:55 not all cables are actually copper, especially in cheap PSUs. Some use copper clad aluminum, or even just straight up aluminum

[@MaximNightFury]

I can't wait for my 99 minus palladium 4000W power supply for $15

[@ronniecunningham9145]

Lmao right

[@preciadoalex123]

Hey collin

[@merwie]

Overpriced

[@StefanellNahuia]

The pfp tho🤮🤮🤢 Not enough that he's a furry,he's aleo gay😂

[@preciadoalex123]

@@StefanellNahuia OwO

[@gamm8939]

1:23 "A Warnung" is actually kinda funny, cause Warnung means warning in German

[@andrewapicture]

The wattage checks out (they just added it wrong), according to the label: 3.3vdc × 25 amps = 82.5watts 5vdc × 25 amps = 125 watts 12vdc ×150 amps = 1800 watts 12vdc × 0.5 amps = 6 watts 5vdc × 2 amps = 10 watts all together thats 2023.5 watts

[@10100rsn]

I think the 3.3V and 5V rails together are not supposed to exceed a combined 150 watts and that is why they are stuck together in the table. It is a quirk of how some multi-rail power supplies are designed, usually because there is a tap on a secondary winding of the transformer that causes this where if they were separate secondary windings altogether it would not have that limitation. That leaves 150 + 1800 + 6 + 10 = 1966 watts total which is close enough. They may have just mislabeled the 12v rail.

[@Silvar55x]

@KABAKOKSEK Often times consumer PSUs are built to offer options on how you want to distribute the total wattage. Each rail is separately able to support higher wattage, but there is a tighter limit on how much they can add up together. This means that the beefiest components (AC side) can be built to lower spec, which lowers cost.

[@samiraperi467]

@@10100rsn Still, the label has an incorrect result for the +12V rail. The PSU wouldn't reach 2000W but it's close.

[@skyemperor2357]

As you are really knowledgeable about physics could you tell me how would one go around calculating V,I,R when two of these are given both in series and parallel. It would really help if you could tell me how to for example mathematically separate currents at the two resistors in parallel to compute their values when V and R are given. I have a test on Tuesday and would really appreciate the help. All 6 scenarios for series and parallel.

[@omniyambot9876]

@@skyemperor2357 since you are already on youtube, there are tons of videos about ohm's law that are great and would surely teach you the simple concept albeit hard to imagine for beginners. Also, your question is a bit broad and unclear. This comment is also not talking about resistance, but power. Goodluck to your exam.

[@Killerspieler0815]

@Linus Tech Tips - You would be much saver when fixing a German / Korean style (recessed earthed) outlet to the output of your modified cable , because Germany has 230 Volts ( + 16 Amps) & there are plenty o IEC computer power supply cables for German / Korean outlets ... the 2x 110 Volts in Canada / USA are no problem at all because the German plug / outlet is not polarized anyway & some regions use 2x 110 Volts with German style outlets (50 or 60 Hz) ... AND don't forget to crimp the fine strands of the flex ! Also the German / Koren system does not let you touch live contacts (in opposite to the literally shocking Canada / USA system) ... Trust me I know what I tell you , I'm a German & I did serval plugs / outlets my self & even connected a 3 phase stove ( 400 Volts) without ANY incidents over the years

[@BlackHawkBallistic]

If you have half a brain and know how to read a basic wiring diagram neither of those are that hard, now if you're doing it live that's when you need some more finesse

[@wolfwilkopter2231]

Actually Japan has another quirky thing to consider.: half of the country uses 60 and the other half 50Hz on their 100Volts due different deliverers after the war and the infrastructure that has been built upon them, which are now not to be messed with anymore. Thats why there was a time when Japan had 2 versions of everything, just to be able to work in the part of the country that it is needed, nowadays most stuff usually supports both frequencies tho.

[@osopenowsstudio9175]

Can you explain why different frequency need different device tu use it?, I'm not an electrician but I'm curious

[@DamnedAngel96]

@@osopenowsstudio9175 not an electrician myself, but might be the same for 100V or 120V, needs a different transformation for each one

[@darekmistrz4364]

@@DamnedAngel96 Actually difference in frequency is a difference in "speed". Keeping the voltage the same, but changing the frequency can cause a 3 phase motor to spin faster. This in essence is a problem for all older type of devices like washing machines and frigdes that used pretty simple 3-phase motors to drive them. Difference between 60hz and 50hz is about 20% so it basically means that your fridge/washing machine either runs too fast and can be damaged because of 20% boost (if it runs on 60hz but was designed on 50hz). Or the other way it runs 20% slower and basically is less powerful in comparison to what is should be.

[@TheLucidDreamer12]

@@osopenowsstudio9175 the technical reason is because the electrical impedance of inductive and capacitive loads against alternating current is directly proportional to the frequency. This affects how much current is flowing through an AC circuit for a given load and affects how much power the resistive loads receive in the electrical network. A frequency mismatch can cause a light bulb to receive too much or too little current, for instance.

[@iiimaskyiii7816]

@@TheLucidDreamer12my man did not use a simple laymen term😭 he said he’s not an electrician Dawg💀 how is he gonna know what those words in sequence mean

[@Verlisify]

13:35 is one of the best jokes this channel has ever seen

[@NFStopsnuf]

That spooked me

[@eliasroshus]

True HAHAHA

[@N1NT3NDUD3]

Omg lol I actually laughed out loud

[@qwertykeyboard5901]

i loved that.

[@thesuperzfamilyvlog6607]

I freakin jumped 🤦‍♂️

[@1tominator]

Power in Japan is much more messed up. They run at 100v Ac but the east and west run a different frequencies (50/60 hz). This can mess up motors or time keeping equipment built for the other frequency and require huge height voltage dc interconnects to merge the different grids.

[@knislappen]

Wtf why

[@DielectricVideos]

Not to mention that 100V and 50Hz is pretty much the worst combination for operating single-phase rectifier loads... Lowest possible voltage and longest interval between capacitor re-charges.

[@ashlyy1341]

@@knislappen iirc it's due to post-ww2 aid in rebuilding infrastructure - one side adopted 50hz (German system) and the other 60hz (US system). i don't remember the specifics but it's related to who aided and also the country being occupied postwar

[@youkofoxy]

we use 220V 60Hz and 110V 60Hz. so it's double the fun.

[@jasonriddell]

@@DielectricVideos NEW York 25 HZ power just entered chat

[@tankgrrl]

Kyle: *points out the tool cabinets full of tools* Alex and Linus: *still yolo with whatever tool is closest to their hands*

[@Neoxon619]

If Alex is there, you know something is going to be very questionable in terms of if it’ll work. That said, 2000W may be more needed at the rate CPU & GPU power consumption rates are increasing at.

[@thunderarch5951]

Pretty sure if you'll want a Rtx 4090 the bare minimum will be 1300w, seeing how much the 3090ti consumes and rumors saying it will only get worse

[@Mr.Morden]

That's an understatement. At the rate we're going we will need electricians to install a dedicated circuit for the computer. Not to mention a second air conditioner for the gaming room.

[@moritlh]

We are at a time when we need to work on efficiency (climate change and oil prices) and those companies are just going backwards. People should boycott those extremely inefficient GPUs but who am I kidding.

[@StevoHDA]

next generation is the last one these criminal chipmakers are gonna get away with inefficiency

[@haywire9174]

@@thunderarch5951 cpus won't take more than 250 at the max, rest of the computer maybe 150, that's 400, max load, with the 4090ti being around 500 watts. 1000 is fine

[@AbrasiveCarl]

Alex is like the only one there that just spends linus's money on anything and linus just eats it up..

[@nexxusty]

Alex is by far the most intelligent, most knowledgeable person there. That's why. He just cannot speak like Anthony.

[@FlandraLabs]

Brandon's been there for more than a decade. They probably have over a million CAD in camera/video shooting equipment alone.

[@sxndwich3395]

@@nexxusty well no lt really Alex's intelligence is based more on engineering and physical things, Anthony's a tech wizard, on the other hand.

[@ovaerd]

@@sxndwich3395 I would literally trust Anthony to do anything and succeed. My best friend it's like a copy of Anthony and he can't even burn food. It's impossible to him to fail. I love both Alex and Anthony tho. I just really think people underestimate Anthony but 7 bet Linus knows exactly what he hired when he hired Anthony. #Anthonysquad

[@nexxusty]

@@sxndwich3395 Anthony doesn't know any more than Alex does, and I honestly don't know why you think that.

[@colewelden]

I feel like a better method of hitting that 2000 watts may have just been to use it as intended. With some risers, and like 8 low end cards mining, you could easily hit a higher power draw. I understand not wanting to risk high end hardware, but surely they could use a bunch of old RX cards at least. I was curious when it would stop working and if it could actually deliver 2000w. Sometimes PSU companies will list a peak rating and not sustained. Also I would have loved to see a Kill-A-Watt or something like it with a real wattage read out. Would love to see a revisit someday.

[@colewelden]

Obviously it probably isn't a good idea to use something like this, but it would be cool to know that 2000 watt ATX power supplies exist for ~$150.

[@dlipford370]

Yeah I was expecting the same thing. Just use mining software to push the wattage limits, it's so easy to versus the trouble he was having running benchmarks on individual cards at the same time.

[@iClone101]

Also it's probably only useful in countries where power is free for the individual, considering how power inefficient that thing would be and how much profit you'd end up losing to electricity bills.

[@711jastin]

@@iClone101 certain regions in china has very cheap electricity, and are often chosen as mining sites before the legality shifts. i've heard electricity as low as 5 cents per kilowatt. some miners simply build water dams to power their mines. electrical cost is almost negligible for eth mining.

[@mycosys]

Much simpler way would be some old school halogen car headlights

[@Lynkah]

I really love the chemistry between all of the LMG employees. It's like they've all been friends since childhood lol. Get yourself friends, colleagues and family that you can smack-talk and roast for fun, that's where true happiness is, in my opinion.

[@TheWunder]

My friends always tend to leave when I run out of cash.

[@Lynkah]

@@TheWunder it's all good, man. Everyone makes poor connections throughout their life. You'll find some friends you'll live and die for, in time. You just need to keep cutting the bad friends out. Don't let them convince you they have your best interest in mind.

[@10100rsn]

8:15 NTC thermistors is used for inrush-current limiting. When the capacitors on the input side of the PSU are fully empty and the NTC is cool to the touch the NTC thermistor adds resistance to the AC circuit to gradually charge up the capacitors over a longer period of time instead of trying to charge them up very quickly all at once. As power starts to flow through the NTC thermistor it begins to heat up and the negative temperature coefficient (NTC) means as it heats up the resistance gets lower making the NTC thermistor look more like a direct wire in circuit instead of a resistor. So it might start at like 18 or 20 ohms but as it warms up it changes to less than 1 ohm over a fairly short period of time. It basically makes sure you don't blow the mains breaker when you first plug in the PSU...

[@gazooc]

It's a little frustrating that LTT has very high demands for hiring people in LAB, but these people end up knowing their job poorly. None of the people in the video could find out the markings of the mosfets and calculate the maximum available current, no one opened the datasheet for the transformer and сheck its maximum power.

[@Psrj-ad]

so its for soft start

[@AppleGameification]

@@gazooc since when is this ltt labs

[@latemhh5577]

Kyle not recognizing labeled NTC was really painful tbh

[@skyemperor2357]

As you are really knowledgeable about physics could you tell me how would one go around calculating V,I,R when two of these are given both in series and parallel. It would really help if you could tell me how to for example mathematically separate currents at the two resistors in parallel to compute their values when V and R are given. I have a test on Tuesday and would really appreciate the help. All 6 scenarios for series and parallel.

[@luqdude]

I wanna see GN test this with their proper testing equipment

[@DrakkarCalethiel]

This needs to happen, I wanna see that puppy put to its max and maybe put out the magic smoke like our good old Gigabyte PSUs.

[@BruceCarbonLakeriver]

THIS !!! :D

[@Ormathon]

@@DrakkarCalethiel The smoke will be accompanied by a big bang and shrapnel. Maybe even a fireball or plasmaball O.o

[@DrakkarCalethiel]

@@Ormathon I hope that it blows the gigabyte PSUs out of the water when it fails, pun intended. :D Would be great to watch if one of the main switching FETs would completely grenade the entire board when blowing up.

[@shrekken2326]

This is a fast food channel, check gamers nexus for indept stuff

[@wub6022]

I'm really enjoying Kyle and Alex, they have really good chemistry and when linus is around it's the angel and devil on his shoulders

[@DaLoveDonkey69420]

the 13:36 "hey stop" i felt that lmao

[@rabeandre2]

I'm sure you know this, but Warnung is simply the German version of warning. It even has the correct English spelling just to the left of it

[@jaden.umiguess]

Never knew that

[@lordrefrigeratorintercoole288]

its ACHTUNG in german... oh wait it was a joke... dumb me.

[@iamlookto]

@@lordrefrigeratorintercoole288 no, Warnung is the german word for warning. No joke here. „Achtung!“ is like „Attention!“…

[@FuryYT]

@@lordrefrigeratorintercoole288 Dumm? xD

[@FuryYT]

@@iamlookto Yes.

[@lucvandoornick2323]

Alex: Dont touch the transformers! Kyle: Proceeds to casually touch them 60 seconds later

[@StudioAREshorts]

I presume that this warning would be more important after the equipment has been energized.

[@gamm8939]

Considering that he is an eletric engineer, he probably knew that he PSU had been off the grid for over a year and so its safe to touch. The warning was more for casuals like us, because if you touch does a day after you used it, you are gonna die

[@nielset5771]

He's definitely a mechanical engineering btw, it is not the transformer but the capacitors that are dangerous.

[@3DJLab]

@@gamm8939 I have taken electric shocks from PSU's like that countles times. I never learn. Long as the current doesnt get through your heart or other organs you are fine. Mostly my fingers have got some nice jolt of electricity, i wear rubber work boots and im careful to not touch with second hand to something else when im checking things. I yesterday got such jolt from TV's psu because i touched wrong component accidentally, it was plugged to wall when diagnosing. So no you are not going to die if you are not touching something else same time or if floor doesnt conduct electricity

[@Damicske]

Transformers are harmless without a wave going in and they are isolated. The underside of the pcb is dangerous with the high voltage caps

[@ryanhamstra49]

10:30 “don’t ever do this, but if you do here’s how you do it.” Ok there Valve!

[@sjm98126]

capacitors would be on the dc side. they are most likely filter caps to make sure the dc output voltage is steady after the ac has been rectified to dc.

[@tehbeard]

Insurers: "Couldn't you have just shipped this to Tech Jesus to test with that fancy PSU load tester of theirs and done a collab?"

[@ender-gaming]

Yep my first thought was like man this would be a lot safer if they borrowed Tech Jesus's equipment. But that'd possibly get less views...people like danger.

[@KillaBitz]

I've been asking Steve to test these for a year now.

[@juntapiezas]

@@KillaBitz And Linus took a year to remember them having one to test.

[@codebasher1]

You need to ensure the Gnd lead is a little longer than the other two. This ensures that is the cable is pulled out the GND wire will disconnect from it's plug last.

[@JellyAge]

Furthermore they forget to use wire ferrules.

[@r00234]

Pretty sure they also reversed their polarity, and probably murdered the copper cabling with those wire snips when they were stripping it. If you are going to rewire a plug, definitely don't refer to this video for reference. 😂

[@Curt_Sampson]

@@r00234 What polarity? North American 240 V is delivered as two 120 V "hot" conductors, one 180° out of phase with the other.

[@smalltime0]

@@Curt_Sampson It somewhat depends, industrial locations (where they shoot) don't use things like Ufer grounding and I think they in particular have multiple voltages and 2 and 3 phase outlets.

[@Curt_Sampson]

@@smalltime0 This is my point. If you're using two conductors to connect to 2-phase power (such as North American residential 240 V), there is no "polarity": both conductors are "hot." (I don't know what "Ufer" grounding is, but polarity is about hot vs. neutral, not about ground, which is a completely separate thing.)

[@ceedrik3212]

"Do not repeat this at home!" Proceeds to give a detailed instruction on how to do it at home

[@AmaroqStarwind]

“Yes, this gunpowder recipe is the real deal.”

[@loiccorriveau4641]

That Hey stop from Linus at 13:37 was PERSONAL

[@Knightswords]

Should ship that to GN and have them do a full a test suite on it.

[@Ocastia]

Jup im very confident that tech Jesus can get that thing to blow up, or at least give it an award.

[@KillaBitz]

I've been asking Steve to look at these for a year now.

[@TheHammerGuy94]

Yes they should I mean their equipment can test any psu's claims of being a certain wattage So it WILL see if it can run 2000 watts

[@plazasta]

@@Ocastia the "somehow not as bad as Gigabyte" award

[@Ocastia]

@@plazasta it could conceivably get that award, however I don't know if it could get the: "better than Dell" award, because that's the only place where Dell doesn't suck as much as they usually do. Still a very low bar.

[@LiveEnjoyment]

The true difference with the silverstone is the cleanliness of the output signal, meaning no ripples on the volt lines. This helps with your lifespan of the products and puts less strain on the power circuitry of the other components.

[@Arelias95]

It would be cool if they could hook up an osciloscope and show the signals. Could be another great electroboom collab.

[@PsRohrbaugh]

It's also important with system stability, especially when overclocking.

[@LordOfNihil]

psu reviews really need to look at the power quality on an oscilloscope, both idle and under load.

[@aleksazunjic9672]

Not really. You see, Intel defined voltage specs for PCI and they are pretty loose for todays standards. Nevertheless, everything that you install on MB (RAM; CPU, GPU etc ...) has to conform to these standards, therefore everything runs ok even on PSUs with lower tolerances. Simply, components expect certain ripples and are not damaged by them.

[@jonathanellis6097]

No ripple I don't think is likely. Very low is probably more realistic.

[@viperwizard491]

NTC (thermistor) is simple softstart for bulky capacitors TVS (voltage transient suppressor) suppresses over-voltage/lightning transients

[@artbeautyandmadness3091]

The probable reason the PSU case is getting hot: The internal transformer works at high frequency above 20,000 HZ and is working way above it's Ampereage capacity, as a result, it's High Frequency magnetic field expands beyond it's physical core structure, as a result, the AC magnetic fields bombard the external steel case, heating it like an induction cooker. I've seen the same phenomenon when a high frequency transformer is overdriven. The more you know. A few things to look for: The extension cord modified for 240 volt: I see a fire risk because the indicator light on the business end is now dissipating 4x the power. they are neon lamps with a series resistor. Unplug when not in use.

[@Hybris51129]

I really want to see Steve at Gamers Nexus hook this thing up to his test equipment.

[@walkir2662]

This needs to be Patrick Stoned indeed.

[@BenQuigley]

@@walkir2662 wait, Patrick is stoned?

[@nunyabeeswax3012]

Or better yet, Aris from Hardware Busters.

[@casedistorted]

Linus having a scale with his own meme face on it just screams Linus.

[@kilbymorgan8626]

Imagine working there and almost every tool you are given to do your job has your bosses face on it. lmao

[@blockbertus]

I think dbrand shipped them a lot of their Linus meme face stickers... Like a dbrand level of "a lot".

[@judahzf]

Linus and Alex: Never do this because safety. Alex 10 seconds later: Here is how to do it 😂

[@ettoresalvatore9437]

Reminds me of my dad: "Son, this is a bad idea, you should never do this. Now hand me the wire strippers so I can do it."

[@nicholasvinen]

If you don't know exactly what not to do, you could do it accidentally.

[@HyenaEmpyema]

They should have cut out the whole part about making the cable and not shown the plug. That's better than saying "don't ever do this" and then show step by step how to do it.

[@512TheWolf512]

Which is why I COMPLETELY disagree. THIS is exactly what Louis Rossmann complains about, the culture of ownership and repairing your own things yourself is dying because you are obsessed with safety, even with something as EXTREMELY simple as an extension cord

[@512TheWolf512]

@@PippetWhippet obviously, because my hands grow out of the correct spot and i actually can fix home appliances myself. and i live in a country with 220v standard.

[@Ronnie_ColemanTopG]

At 11:39 this reminds me of Mr.Boom the electrician everybody used to watch back in 2017 and he would end up exploding his creations on accident by letting wires touch and it really shows how lucky he is for his whole outlet not to explode and catch on fire

[@Daniel10663]

13:35 I literally thought something popped when he held it to its head , I jumped lmao

[@informatiger9501]

"Warnung" is german for warning so this is probably not even a mistake.

[@okj579]

The only problem is they forgot to put a German warning under it 😆

[@gintonic5770]

Had to scroll too far for this comment :D Thank you

[@amitdutta736]

8:42 That is not a MOV, it is a thermistor (NTC type) generally use to prevent inrush current (soft starter)...etc (NTC Type - Resistance is inversely proportional to temperature)....Conclusion of Linus: "Based on the temperature of inductor"😮‍💨😮‍💨😮‍💨 ...You guys need proper Electrical/Electronics/Instrumentation Engg in your team.

[@UnknownS0und]

Yeah, normally I enjoy LTT antics but this particular Video was just too cowboy for someone who knows even the basics of electronics

[@garci66]

yeah.. that's a bit sad. They are not teaching but rather confusing more people. Same thing with the dead GPUs from ebay video where they were just bypassing MOSFETs. In most cases, the mosfet would be a switching component (as in part of a switching power supply) and not just a "relay" allowing current to pass. A GPU has no need to turn on some parts of its circuitry on demand.

[@josephsanchez08]

Yea sometimes I question the EEs they hire. If your in product development you know there’s so many ppl from SI to PI to EMC to validate everything.. good times tho

[@zedalert]

You should buy professional load equipment, it can be controlled digitally, measure voltage, etc. It is way better than a regular PC with two GPUs.

[@SunnyShuklathedoctor]

NVIDIA is probably like "eh, who's gonna have 2 3090s when you only need 1 3090TI" and proceeded to have the most smartest dumb engineers.

[@OOFERenjoy]

spelling mistake : you dont need to more

[@spv420]

@@OOFERenjoy fun fact : no one cares

[@gayasslily]

@@OOFERenjoy spelling mistake: you dont add spaces before :, ;, ,, ., ?, !, /, -

[@BeetleBuns]

@@OOFERenjoy there are no spelling errors in op's comment.

[@OOFERenjoy]

@@BeetleBuns "most smartest" more like "smartest" you boomer dont know spelling huh? go back to grade 1

[@tHaH4x0r]

7:42 That is not true. The point of a MOV is not meant to 'level out' the spikes. The point is that if an extraneous voltage spikes the MOV shorts, in turn triggering the fuse. Short term the fuse will not blow due to thermal inertia, but most over-voltage events are long enough to burn the fuse. This in turn protects the power supply and components after the fuse from damage. This is why you ALWAYS see the MOV after the fuse in the circuit. Actually without triggering the fuse a MOV would destroy itself extremely quickly as it cannot handle much power at all. It shorting a high voltage to ground with a low resistance would mean it needs to dump massive amounts of energy in a small time, hence it cannot be the main protection device. Sure it might work for short spikes, but it is not a reliable and safe way of doing things. Especially as MOVs tend to fail in short circuit mode, which means that they will burn and cause a fire hazard.

[@DarkoPetreski]

Where the fuck did they find that guy, isn't he like supposed to know shit about electronics? He was wrong about everything he has talked about in every video he's in

[@DielectricVideos]

Can confirm, an unfused MOV is a lot more trouble than no MOV at all! I once connected a 120V power strip to a 240V source, not realizing it had MOVs inside it (without fuses). An enormous bang ensued, followed by smoke emanating from the power strip. The output of the power strip didn't even shut off.

[@DrakkarCalethiel]

@@DielectricVideos My power strip had 3 MOVs as crude over voltage protection and "filtering". In the middle of the night the MOV between live and neutral decided to commit suicide and went with a loud bang. It was on a regular european 230V 16A circuit too for extra spicyness. MOVs NEED a fuse, be it a normal one or a thermal fuse. When they fail, they mostly fail short. Also they tend to heat up quite a bit when they get tired. MOVs have a limited lifespan and can only absorb so many transients.

[@fabiofoltran4361]

@@DarkoPetreski like I was so mad ...they got so many thing wrong ..can't you take a day and search this stuff on Google? Smh

[@gefrmarkus]

1:35 in German "Warning" is called "Warnung"

[@alanmoore78]

yes, never mix 120/240 stuff, years ago we had an "electrician" hired by the property management who came in and said, oh, that 240 outlet in your living room, I can replace it with a 120 outlet so you can use a smaller air conditioner. He changed the outlet, didn't mention he wired it wrong, and he "borrowed" our bedroom AC unit (a $700 Friedrich 12000BTU unit that worked flawlessly and had a digital display, remote, all sorts of nice features) to test it and promptly let the smoke out. Of course they fired him over this, but offered to replace the AC unit. When the property manager showed up all smiles with a 5000BTU $98 Walmart unit thinking that was a perfectly adequate replacement, we filed that away and when it came time, chose not to renew our lease.

[@alexmentink8567]

"Do NOT ever do anything we've done in this video. That being said, here's HOW you do it." These guys know that people are morons and want you to at LEAST know how to properly do something stupid BEFORE they go and hurt themselves. How responsible!

[@swapnilchaudhary2944]

Because some people will definitely do this and its better if they do it right

[@anastasiao4036]

Morons will moron. Best thing to do is to moron responsibly

[@Trappy-C]

​@@swapnilchaudhary2944 l

[@Curt_Sampson]

Though they could have just taken a little extra effort to do it right in the first place, and also replaced the NEMA 5-15 outlet with an IEC C13 outlet (that plugs directly into the PSU), avoiding ever having 240 V power on a 120 V outlet. Even easier yet, as well as more flexible, would just be to buy a North American 240 V extension cord and put their 240 V connector directly on the IEC cord, so you'd still have just one plug to replace and it would be utterly clear (because of the short cable length) that the IEC cable was 240 V.

[@Atomy111]

Well there is too many people on earth so whats a couple of morons 🤣

[@unknown_matter7818]

"Don't touch these" *electrical expert touches them*..... On a serious note, they aren't stressing it enough in the video and explaining why it's so dangerous to open a power supply. The caps can hold charge long after being unplugged! It literally can kill you folks! Same goes for appliances like a microwave.

[@iClone101]

Makes sense, since the electrical expert knows what he's doing and the average viewer does not.

[@ccoder4953]

What you say is true, but it's also true that most reputable power supplies have bleeder resistors across their large caps, so they will be completely safe within a few minutes, worst case. So, the Silverstone, probably perfectly fine. The other one. Who knows. If they copied a Great Wall, and didn't skip those components to save a few cents, maybe.

[@mycosys]

@@iClone101 lol, he really didnt

[@niky00045]

go watch electroboom. electricity through the body is only dangerous if it passes through the heart.

[@ccoder4953]

@@niky00045 Pretty much true, but it is also possible to stop your heart with the energy stored in a cap, especially a large one. Just depends on the path the electricity takes as it flows through your body. That's why TV repairmen often worked with one hand behind their back - to try to prevent any shocks from flowing through their heart.

[@lifeisagreatadventure9460]

Id love to see a video of all the prototype ltt screwdrivers that didn't make it. I think it would be interesting to go over all of the reasons they didn't make it in.

[@ButtonFacade]

Great idea!

[@ZNotFound]

Hopefully when they release the screwdriver and backpack we get a documentary style video of the prototypes.

[@iClone101]

Also want to know what happens to the OG orange screwdriver that Linus has used since forever.

[@ZipSixz]

00:13 I open the video and am instantly greeted by Linus dangling a $550 Power supply by a ripped piece of cardboard 5 feet off the ground

[@iamnickdavis]

When that dude in the back clapped @~13:40, I almost lost it, LOL.

[@ElNegus9985]

That scene jumpscared me.

[@theCoolDie]

scared the shit out of me

[@chaitanyasindagi1237]

You guys should do collabs with actual electrical engineers who know what goes into power supplies to do side by side analyses like this. The size of a transformer for a given wattage and frequency is mostly the same regardless of voltages unless you're at very low or very high voltages. And PFC is necessary for anything at this power level regardless of voltage level. Weight difference could come from smaller filters on the AC side resulting in more EMI, smaller inductors and caps on the output meaning higher output ripple. It could also be that they used higher switching frequencies which would shrink weight and size a lot at the cost of efficiency which people are a lot less likely to notice

[@debojitbhattacharya4093]

alex clark guy is an actual ENGINEER!

[@noneofyourbusiness4294]

You do know that Alex is an electrical engineer, right?

[@timnone2924]

As everyone's said that's Alex, also Kyle is an electrical engineer as well I believe

[@joemarais7683]

They do have actual electrical engineers. They just don't put in the time and effort to actually analyze anything cause being "probably correct" is all they need for a profitable video.

[@imedjendoubi6401]

Agreed 👍👍👍

[@colewelden]

When he first showed the label, before talking about it, I too was confused how 1766 watts across all rails was actually 2000

[@cheng1991]

12*150=1800

[@ghomerhust]

the same way that a gold rating is 95....

[@mastroitek]

I'm confused about the why can't they just plug the PSU in the normal wall plug. I mean, is 2000W...

[@girlsdrinkfeck]

@@mastroitek they in north america

[@mastroitek]

@@girlsdrinkfeck I know that, they have 110V, but don't they have 22A?

[@skidclub.privat]

Alex: dont ever touch the transformers! Kyle 2 minutes later: *touches them all*

[@blakeparry1983]

would have been interesting to compare the actual efficiency at the wall between the two PSU's

[@ratbag359]

going by how much heat was been ejected probably 20% been lost maybe more

[@PixyEm]

@@ratbag359 It can't be, it's rated 90+ Gold after all

[@MuffinMammoth]

They used the cheap label so it can be easily removed to hide your sketchy power supply.

[@AndrewGillard]

Given the amount of time (and solvent) I spend removing stubborn labels from things, that label was great! :D

[@wuokawuoka]

That was a peel, not a label anyway

[@MuffinMammoth]

These bots are dumb as fuck.

[@Syfes]

Japan actually only uses 100V in most places, and then to make it more complicated the south-west of the country is 60Hz and the north-east is 50Hz

[@Sirikiller]

Half as interesting viewer?

[@rockytom5889]

Wait. How in the hell do you make a grid that has different phase frequencies?

[@Sirikiller]

@@rockytom5889 kzbin.info/www/bejne/g6Cbaa13atOkarM

[@jt....]

@@rockytom5889 You don't. Japan has two grids

[@rockytom5889]

@@jt.... Ok that makes more sense. But even still, why make then different? Is it a case of it being too expensive to replace old tech or what?

[@teamavk]

Hearing someone say Yebo in a LTT video @ 8:22 absolutely made my day! Thx Kyle (from a fellow Saffa!)

[@pezz1232]

Was expecting to see the server psu not a normal ATX one

[@Mr.Morden]

I want to see some really horrible PSUs like Apevia and Logisys, especially the old acrylic ones that would melt under load.

[@DielectricVideos]

@@Mr.Morden I did a teardown/test on a super cheap AliExpress PSU a couple years ago. It was quite poorly constructed, but seemed to perform fairly well nonetheless. kzbin.info/www/bejne/poPEl4xtiJiZgdk

[@cromefire_]

I sometimes wished to have (reputable) 240V only power supplys so we could get cheaper PSUs here in Europe. Yeah I know R&D and production are probably cheaper to only build one kine, but it seems very wasteful that all the PSUs are speced for 120V, which is a capability just utterly useless to most people over here.

[@jamesphillips2285]

I question why 240V plugs are not more common in datacenters in North America. You can get extra efficiency that way. We do have 240V plugs in the home: but they are normally restricted to the Stove and clothes dryer (with high current ratings like 40A/30A repectively). I suppose Level 2 car charging is also 240V.

[@cromefire_]

@@jamesphillips2285 Well Datacenters often use something like 400V (very custom) or 240V (as seen the million dollar unboxing) AFAIK, but in homes (and maybe even in smaller Datacenters) it'd be hard to switch plugs because you'd have to have both sockets in a home for some years if not decades, otherwise most would probably switch to 240V (at least they should for efficiency), but yeah legacy makes that pretty hard... (Also you'd need to change those dangerous plugs if you don't want people to die, 240V packs a hell of a punch, the shock ahould be 4 times stronger) Fast car charging is DC btw.

[@lunchie80]

Australia is also 240v. You find a lot of multi-volt stuff now, switch-mode power supplies have made various voltages/frequencies a non issue so only one needs to be made. It's not any cheaper to make a 240v only, and barely any efficiency difference now. If anything, wide voltage appliances(with a standard IEC plug) make buying items easier as you can shop anywhere and just swap your local power cable for your area.

[@cromefire_]

@@lunchie80 well consumer power supplys don't do this, but in server you seem to often see that the PSUs have double the Power for 240V, so you could probably build a 400V regular PSU to go out to like 750W with 240V only (and that's what makes it cheaper), you might not even need to change much in the hardware design because of that, you probably only need to change the output side of things. (Also you don't really get PSUs with non EU plugs here, so that's pretty much a non-issue for consumers)

[@nesyboi9421]

Well then you just generate extra waste and get rid of inter-compatibility, like imagine you're American and you move to somewhere in europe and power supply companies have made it where you only have 120v and 240v power supplies in the areas that use those, when they move to Europe or most anywhere else they have to buy a new one, and vice versa. Honestly we just really need a universal power standard but that won't happen for a long time, if ever.

[@Fayeluria]

"Let's get an expert to tell everyone what's going on" "Here we have a lot of chonky bois"

[@zachcrawford5]

Spoken like a true expert.

[@rexsceleratorum1632]

The "expert" has no clue whatsoever. He thought an NTC, labeled an NTC, was a MOV. He's never heard of NTCs apparently

[@Choppy_PHC]

the MOV's were the small blue discs on the left side of the video at 8.11 NTC label'd parts are use to measure temps, likely part of the safety shut off circuit that'll kick in it things get to hot (and also activate the fan etc). they will change resistance depending on the temp

[@Ferdam]

Wow how could you guys not take a look at the temps of this PSU with a FLIR camera I was really curious on how hot this was running lol

[@TheWinjin]

Or even better, stick some actual sensors in there while you're looking inside

[@10100rsn]

11:25 In North America, that's the US and Canada, the white is always Neutral and the Black and Red are always Live (or hot). You may see 220/240 volts run with Romex or extensions wired with the white as a second live/hot line instead of neutral, but these white wires are _supposed_ to be marked with red or black tape (or heat shrink tubing ;) to indicate that they are also live and part of a 220/240v circuit and not actually neutral anymore. Adding red or black tape is usually done when converting a 110 socket over to a 220 socket and you want to keep the original wiring...

[@jgaynor]

Came here looking for this clarification. Thank you.

[@eDoc2020]

To be more pedantic, white and gray are always neutral, green or bare is always ground, and _everything else_ is hot.

[@8blade6]

@@eDoc2020 never shy from being pedantic. To go further it is now called the identified conductor, though still known as neutral

[@eDoc2020]

@@8blade6 I thought the "identified conductor" was the one with the color tape applied. Neutral is the _grounded_ conductor which of course is different from the _grounding_ conductor.

[@fakeacountname565]

@@eDoc2020 Technically here in Canada, the black is the current carrying conductor, white is the identified conductor and the green wire is the bonding conductor not ground. You only have a ground conductor at your service entrance where it is tied to a grounding rod or ground plate in the dirt outside. After that it is called a bond as it does not go directly to earth but bonds everything back to the ground conductor.

[@Mahmoud-Alharazeen]

I would like to see it tested on equipment like the one that gamer nexus has to see its limits and how far can it go

[@BWcapture]

They should send it to GN for follow up/

[@mycosys]

Even short of that - anyone can afford some car headlights to use as a consistent controllable dummy load and i'm sure they have an oscilloscope to measure regulation and ripple.

[@akinoz]

@@BWcapture right!

[@tonyp114]

I was just going to comment this

[@djlefleur123]

In all reality, if Intel and Nvidia can't get their power efficiency under control, we may actually see a need for 220v PSUs to handle more than 1800w.

[@RiceWitch-dingus-400]

they did with the 40 series!!!!

[@aut_bedenis]

I am pretty sure you know that "Warnung" is German for "Warning", which you can read next to each other. But anyway, very good video.

[@jorrit_o]

Which would make sense since its a 230V/240V power supply

[@user-op8fg3ny3j]

Can't tell if LTT was joking or they've never seen German before

[@swissix4947]

Was already wondering why there is German instad pf english on the thumbnail.

[@jorrit_o]

@@user-op8fg3ny3j Ich mein Warnung ist ja auch nur ein Wort der deutschen Sprache... er muss ja nicht jedes einzelne Wort kennen 😂

[@dnxtbillgates]

Help me understand why it was necessary to hack a NEMA 15R onto a power cable when you could have just used an actual 240V PDU with a standard C13/C14 connector. The C13/C14 is rated for 240V use and you could have used the opportunity to actually give some tech tips about different power connectors that typically only exist in the datacenter rather than "really bad idea" hack jobs.

[@brandoxic8354]

"entertainment value" They know their audience well.

[@jakesmith2341]

Oofta guy!

[@BobHannent]

If they were going to hack it, it would even have set a better example to put the NEMA 15R onto the C14, then use a 240V extension cable rather than making a "spicy" one.

[@eDoc2020]

@@BobHannent A C14 is a computer inlet and a 5-15R is a North American outlet. A cable with both of these wouldn't have helped. I think what you want to say is a NEMA 6-whateverP inlet plug on one end and a C13 outlet on the PC end. For their particular setup I believe they were using an L6-20P plug. In datacenters L6-30P plugs and L6-30R receptacles are more common.

[@Jehty_]

Maybe because they didn't have a 240V PDU lying around?

[@khonjel_singh]

That clap at 13:30 really got me lmao

[@Rosco879]

Sorry just a correction on the video... The MOV section is totally wrong, although the silverstone showed a MOV. The parts in the "2000w psu" are actually NTC parts, more specifically ICL devices (inrush current limiters), completely different from MOV parts. They are resistors that are temperature sensitive, helping to reducethe initial rush of current (due to charging capacitors). This initial high current load causes them to heat up and therefore lower their resistance making their effect on the circuit more irrelevant due to lower resistance at higher temperatures.

[@JustinHarres]

I love how the Thumbnail shows „Warnung“ in German instead of Warning

[@farmerjoe.]

Oh I thought it was a typo lol

[@user-op8fg3ny3j]

@@farmerjoe. Linus says at 1:23 that they think it's a spelling error but it's actually just German

[@geolykt]

it's obviously a trick to attract all the germans on the internet

@@user-op8fg3ny3j it could also be a spelling error because U is placed left of I.

[@astranger448]

Why, that is as it should be. Germany has 240V as standard in their homes the US has not. So you label in the language of your target market if you want to sell there.

[@maik5825]

Actually these big capacitors are also DC. The mains input is rectified and filtered by the big caps. A small circuit then switches the transformers on and off at a frequency of a few kilohertz (and makes the DC voltage AC again, but at a way higher frequency). The transformer output then charges the small capacitors. When the desired voltage is reached, a feedback signal is triggered, that turns off the small circuit that controls the transformer until the voltage is below a certain value. Then the circuit turns back on, charges the small caps…… and so on. All modern buck converters work this way because a huge transformer is inefficient, heavy and expensive.

[@natebaby335]

I'm gonna miss Colin, may his works in that workshop be remembered (no he didn't die, he moved to a different company)

[@Sithhy]

Oh, what? Colin left LTT?

[@akshatsingh9830]

what when did this happen ?

[@BillPairaktaridis]

My headcannon is he quit because he spent so much time on that custom desk only for 90% of it to be covered by a deskmat

[@natebaby335]

@@akshatsingh9830 a couple weeks ago, I believe

[@lonelychimo]

"Warnung" is just warning in german. There are other languages right next to that as well many packages and tools do that where they write "attention" or "warning" or "danger" in many languages right next to each other

[@suporjustin]

Alex: *Shows off transformers* "Don't touch these." Kyle: *Immediately touches transformers* "I see a lot more chunky boi's!"

[@ryanjohnston6499]

South Africans are just built different🤣

[@seushimarejikaze1337]

he should say "dont touch these when they are working"

[@suporjustin]

@@seushimarejikaze1337 No, I know. I just thought it was funny.

[@seushimarejikaze1337]

@@suporjustin it sure is. curiosity sure killed the cat. then the nickname he gave them. here come the expert : "we see here a lot of chunky bois" rotfl

[@thekitsunedev_hun]

3:55 you can touch the transformers but not recommended to touch anything in a PSU also what never touch are those thick caps, those can give you a really good shock if they are charged (only if you touch it pins)

[@realryleu]

I love how they had the gopro in front of the power supply the whole time just in case.

[@Kyal-]

Honestly, crucial is such a great brand, never had any of their products fail after years of heavy use, and they are so well priced in the states. Great sponsor haha

[@danialsalahuddin754]

Fun video as always but it was a bit tough watching the analysis of the supply insides, those ntc thermistors are for inrush current and are not MOVs, that yellow tvr was likely an actual varistor. I'm not an engineer anyways, and I get that a detailed explanation of the different topologies between the two supplies is out of the scope of this channel.

[@jameshogge]

Yup, and talking about the 240/120v switch: there's actually very little extra hardware. The switch turns the bridge rectifier and input capacitors very neatly into a voltage doubler. The talk about additional transformers was all wrong

[@danialsalahuddin754]

@James Hogge Yeah the discussion about the transformers was pretty hand wavy, those things are proper insulated so just touching the top of them isn't going to do any harm. They also aren't made of magnets, unless you're very loosely referring to ferrous materials. If I had to have a guess I'd assume each transformer was for a separate rail, or maybe even something esoteric like a multiphase full bridge/half bridge converter considering the power density.

[@R4MP4G3RXD]

Yes it's always a pain watching these bits of their videos, but it gives a great perspective of a layman.

[@kubeek]

yeah the level of incompetence in correctly comparring the two is jarring at times

[@ArifKhan-bp9zx]

@@jameshogge No.. Actually not... Those Switch Equipped PSUs are too crap and old designed Half Bridge Converter.. They tend to fail more than.. modern Dual switch Forward and Resonance LLC PSUs.. In modern PSUs.. The APFC Circuit actually Boosts Voltage for primary Capacitors.. to like 350 volts... And those extra transformers in that PSU.. we can't say about them much .. because.. they can be connected in many many ways .. like 2 in. Series.. or both in parallel of Primary series and secondary parallel.. or vice versa.. there are many possibilities... For transformer configuration for load sharing in PSUs...

[@TrueThanny]

Auto-switching power supplies don't just take 120V or 240V. They take any voltage inside the range of about 100V to 240V. Higher voltages mean more efficiency, which is why it's common in data centers to offer 208V power, because virtually everything you put in a server rack will happily run on that voltage.

[@HermanWillems]

USA and CANADA and JAPAN should just switch over to 240V. Would also be good for the enviornment.

[@eDoc2020]

Auto _switching_ supplies only take fixed voltages. Fortunately these are rare nowadays and we mostly only deal with wide-input supplies.

[@1pcfred]

@@HermanWillems North America already has 240 VAC single phase. We just have a center tapped ground bonded neutral because we're not poor and stupid like the rest of the world is.

[@the_retag]

@@1pcfred wdym poor and stupid? And everyone means 230/400 three phase in the house when they say 230 (220, 240)

[@mattway9910]

11:29 casually jams a stranded wire into a terminal without crimp sleeves to make the spicy cable even more sparky. For heavens sake, hire Brian please

[@eDoc2020]

I believe those connectors usually have clamp-type connectors, so there's no need for a ferrule.

[@void_snw]

Doesn't matter how long it wasn't plugged in, dielectric absorption is no joke. Guitar amp techs have felt it.

[@BraulioHernandez-sj6cv]

That explains something lol I worked with a decent backpack vacuum with a 50 feet cable which I just unplug from the outlet and I didn’t turn it off before and it shook me I grab it

[@davidGA殿]

It would've been really nice if there were a comparison between the expensive and the cheap power supply in terms of temperature and noise.

[@McKevittS]

Why? Just dont buy that cheap-o PSU.. please

[@plazasta]

@@McKevittS ENTERTAINMENT, THE ALGORITHM DEMANDS IT

[@gamm8939]

Ehm, just dont buy the cheap one? If you need 2000W for your PC, its gonna cost upwards of 5000 dollars, so please, please buy the actual PSU that wont fry your components

[@youtube.really.stole.my.handle]

Lmfao nothing is learned from this video

[@Yo-ju1sr]

@@gamm8939 we can still plug more than one power supply wich will cost a bit more than that cheap one but way less than the real good one^^

[@mbainrot]

6:38 Noooo they're not, those are polarised capacitors (hence the negative stripe down one side), you hook those beuaties up to AC and you'll have an electroboom video :)

[@iagocarrarodossantos329]

These could be after the retifier so it would have an oscilating input but on same polarity.

[@Fusion_X]

@Max More like he meant that they are on the high voltage 240v side which is AC from the wall, but yeah before power goes to this big capacitors it goes through Full Bridge Rectifier which converts it from AC to DC

[@jyvben1520]

beauties

[@gamesturbator]

This is by far the most fun LTT video I've seen in a very long time.

[@elandman]

Hearing Kyle say "Yebo" to Linus when discussing the MoV... on a LTT video... priceless for Saffers