Bloody Hell: 0:25 0:51 1:46 4:43 4:56 6:46 (10:57) just bloody 18:38

I enjoy the unedited videos. I miss the cat, but I enjoy hearing humor in your dialog. Hearing you laugh is amusing. I really like this channel.

Next Part is "server power supply - full scematic and explanation" right? :D Very interesting. Never seen such a device...

Designer : How many Amps do you want ? Client : Yes ! 😁

Bloody Hell I love this guy, so entertaining and has taught me new techniques on troubleshooting. Thank you for these videos.

And now the scematic 😱😂

For a server? Nah, just for a very enthusiastic gamer! 😉

Just imagine the work that went into designing this power supply. It's crazy.

And here i thought that 850W PC psu you did was complex. No wonder these cost and and a leg to repair, just looking at it gives me a headache.

how do you get those intresting parts? i can't even get a laptop battery pack from a recycle center

Could you do some tutorials on smps building from the basic? I mean like from component level and all the calcs involved , tips and tricks ? I'm sure a lot of people would be really interested

I must admit that I never seen these super large power supplies, but to use some of the parts is another story! I've desolder many power supplies and use the parts for my projects, so nothing is just disposed into the trash. I grew up keeping just about anything, but now we dispose stuff like toilet paper, in these days. It's less expensive to buy new and have some warranty..... Thanks for sharing!

It's awesome and I would like to see it in depth like you usually do in-depth look at how it works and components etc.

Even more Amps!

This has totally blown me away, these power supplies are amazing! PSU'S & Transformers are a favourite of mine, to think there is more than enough power there on the 12V to crank the engine on a large car without struggling at all, what the hell! If these are examples of older ones, I can only imagine and dream of how the latest models could be. Definately a bit different from the old 300W cheap Chinese desktop PSU's that were so rubbish and killed many a good computer, power supply is everything, the lifeblood of every device ;-)

seriously, I like so much your reactions.

2:20 that's a Mil-spec circular connector, either DTL-5015 or Y2M Pretty rare stuff, most well-known maker are Bendix (now Amphenol).

Wow! Awesome stuff! I will definitely check out your website for power supply info. Thanks for posting.

At the moment I'm doing a lot with servers, but I cant imagine any kind of server hardware that takes such amounts of power and is still "one piece"

I found such a strange connector on a trash, now i know where it came from :) The whole construction is just pornographic ! I Could spend hours looking at and touching such beautiful constructions. Defenetly needs deeper explanation.

You are amazing in power supply, i learn a lot about power supply from your channel. Thanks👍👍👍 Now i can repair and modified some of my power supply of computer/adapter/and know a lot About them how did it actually works.

I never get bored watching your video's

Opět skvělé. 👍 Díky moc.

Nice vid. You know your way around this stuff.

You are the best in disasembling

This guy really is serioooos!! Lub u btw

I work on these power supplies. Most server farms used bunch of them. They are complicated not just on power electronics, but also lot of software and communication.

Love it! Thank you!

High end servers and network switching equipment would generally have two to three hot swappable power supplies, and the supplies would have enough capacity to provide full power if at least one supply failed. On some server special commands need to be issued to quiesce the supply before it can be removed, and other commands once it has been replaced to reactivate the supply from the quiesce state to fully operational.

And the most interesting thing is that even a small server room has alot of these things in them

Allways wondered what the backwards ur stood for. Now I know. Excellent videos thanks.

new game , every time he says "serius" take a drink!

Very cool.... Lots of cool stuff in there...

Good video, Ultimate SMPS technology there.

In large datacenters you generally have three-phase power, and each row of racks will have two phases going to it, with each phase on a separate UPS and circuit breaker. This way you can replace or repair one of the big UPSes that backs up many racks and nothing is running solely on that output.

I like your accent ...very special and clear. 😊

Great video, x

Bloody hell never gets old

48V DC supply is standard for telecom switching equipment. When companies like AT&T or verizon buy servers they often want them to run off the same supply as the telephone switching gear, so manufacturers often support it.

5:35 It even has those transparent yellow Rifa "pyrotechnic series" caps so many manufacturers used those crap caps in the 80s even HP used them in their test equipment. They'll eventually short out and release loads of acrid smoke if connected to the mains. The caps bodies get hairline cracks in them which exposes the foil to moisture.

Congratulation with your new luxurious welding machine ;)

Realy nice for making welding inverter.

You can weld with this supply. As a matter of fact it is better build than most Chinese welders.

I think these power supplies are bulit with resonant topologies like LLC resonant , that's why they are complicated and that's why we can see too many inductors. Since it must run continuously at such high powers in high power density and high efficiency resonant is best and needs microcontroller to run it.

Great to hear

love when you said bloody hell 😂

wow that's beautiful

Very interesting. A great power supply. :)

12.5V 175A bloody hell _indeed_ ! This PSU can probably do 200A peak. You could start a large diesel engine with that or even melt steel.

Many of those power supply have 2 AC inputs. One on UPS/Generator, and one on another circuit, so a temporary fault with one does not shut the server down. If you need to move the server, one plug can be unplugged, connected to an extension cord, and the server re-located to access wiring, etc. without interruption of operations. Google does not go down to change a failed UPS. Power is redundant. Many mission critical servers use dual power supplies, each with dual AC power sources.

I think this is a job for your cat to reverse engineer-it ;). So that's what you need to do when a reliable power supply is needed on your server. Very cool piece of tech.

In the double diode, there might be more diodes in parallel instead of just one on each side. In low current supplies, parallel diodes do not work because one of them is always on before the others, due to slight difference between parts. In this case, however, it could work because of the high current, and higher voltage drop across the diodes.

I think the huge, pointed spikes are alignment pins for hot-swapping. I also think that the one power supply (The 19A one) actually said it's 19A and below it said x2. Could this be dual 19A inputs?

Good video

the SPS4264 might came from EMC Symmetrix storage rack. the other ones seems to be coming from base station since it has quite beefy 56V rail.

The traditional power supply for analogue, fixed-line telephone exchanges was 48V DC from open-vented lead acid batteries, and this carried over into digital exchanges and mobile base stations. It's probably not so surprising to find computer power supplies taking 48V DC, now the telephone networks are basically computer networks.

Gut video

Theres More than one psu always. No down time, just time without redundancy

I think that is a combined server supply and integral battery backup charger and possibly an inverter by the looks of it.

Its amazing and beautiful this kind of things... atleast for me and for him

server power supplies are invariably power corrected input and usualy the the rfi is followed by a bridge rectifier followed by a boost converter to take the voltage up to around 410 volt. find the analogue control chip and you can find the circuit in the chip aplication notes. the 410 volt supply feeds usualy a small flyback converter which is used for the control circuits. the 410 volts is than used to dive a high freq phase shifted bridge which feeds the stepdown dransformer. there is usualy circuits employed to provide zero voltage witching of the primary, later circuits use a hf bridge feeding a series resonant circuit at the input of the stepdown transformer. find the analogue controlchip and you know which is used. on the output you will often find a rectifier with current doubler circuit in later servers zero current mosfet rectifiers are used and a mosfet switch to enable output swiching. most power supplies are used in parallel on a dual mains and need to share current in the 12 volt output. modern powersuplys have high eficiencys of over 94 procent and a unity power factor input . i did trace the power circuit of quite a few server power supplies and have drawn up some of he power circuits. please contact me if you need them.

Quick question.. an LED cob light meant to be used as a vehicle fog light (12v 6w 150+/-mA 500-1000Lumens) ive heard that such lights should have a strong ground I'm currently using 20AWG wires, would an 18AWG wire be better for the ground wire connected to the chasis or would it not matter since its a low power LED?

perfect...videos

You know it's good when he says bloody hell.

Hi DiodeGonWild can you examine this power supply part by part as much as you can do? I am really curious about this.

It is amazing you can modify a power supply like this to do constant voltage and constant current. I have tried it on various supplies and I would love to see a tutorial on how to do it. These server supplies mostly all use synchronous rectification and I have no idea how to mod it. Also, how can you achieve current limiting? How can you figure out the duty cycle and frequency for how mosfets are driven? What chip do you use for modding it? SG3525, TL494, Microcontroller?

175 amps "Bloody hell". Quite appropriate I think. Fascinating device.

Looks like more a UPS power supply than a server, I maintained some Proliant and Dell stuff and while they had modular PS the closest thing I saw that resemble those are the Intelligent Modules from a Symmetra 20KVA, basically a 3 phase UPS with modular batteries and PSUs

Wonder what frequency the first one runs at? Has silicon steel cores for the transformers. On the flip side it probably has a saturation current of at least a couple hundred amps.

Bloody hell you can start your car with this power supply

In servers they have at least 2 of them, sometimes more. Only one need to work, so if one fails rhen there is another one. So there is usually no downtime. @DiodeGoneWild

Wow , i wonder where you got those. Those must cost a ton even broken. And the amount of scrap parts it can give.

thease would be great for car amplifiers for indoor use as they draw a ton of current

quality power supply

Awesome Again...

DGW sounds like a kid in a candy shop. Bloody hell!

Wow, i.need at least twó 16A groups at indeed European 230V to power that one thing!?!

Nice

Pekné kúsky, kde na to chodíš?

Monster power supply. Beautiful treasure

That would make a good home made Tig welder.

"Down" is the side that is closer to the table surface :)

Server power supply is rated at pretty crazy current and watt capability to sustain All of those power hungry processor and stuff. I actually have 3 servers on my closet and I'm probably going to add one more server to it. My setup ( right now ) have 2 storinator ( NAS project ) and one of those HP proliant server. They are usually come with those huge power supply AND it needs 2 power supply for redundancy and if the server need more power. I'm actually tapping the electricity from 2 whole different bill meter and just plug some 100 A 2 pole breaker on each phase. I'm running it on 2 phase each power supply gets 1 phase so that it won't load my power line too much. Well I'm actually pretty lucky because in 2019 I'm starting to use solar energy so the power bill meter is only useful if I switch the power to the standard power line. So I'm basically running those servers for free...

And today these only take up about 1/8th of the space, while providing the same, or even more power. i'd love if you went through one of the more modern ones.

16:20 THAT is a diode-gone-wild !

Ah, what a pleasure to watch this high ampere pr0n. :] This was pleasantly-intellectually entertaining. Thanks. :)

Hi,Can you suggest me a practicing engineer's book on smps AND their feedback topology including designing

At 0:18 - Transistor Devices Inc (TDI) is New Jersey Company .

Pretty powerfull.

XR ups I working with those on 2090!! Lovely remember

I've never seen such a huge supply with a good construction from a chinese manufacturer. Those who can repair this must be a god

I taken apart an emergency battery pack for a server power supply like this. The pack has 8 batterys in it and they are 12v 5Ah sealed lead acid batterys.

Are those PSUs from some military equipment or an aircraft? That connector at 2:20 looks like a standard MIL-DTL-5015 military connector.

I like your excited laugh. Please say full bridge rectifier electroboom style

Are there any 3 phase power supplies? (You can transfer more electricity through 3 wires)

i was waiting for schematics xD

Anyone knows its price? Please tell!

Amazing that we just ship these to the recycler and throw them away.

Envy!!

I wonna one of this xD