Server PSU Hack - HP DPS-800GB A, 12VDC 1000W

[@Eden_M]

Just like any of your other videos, professional and straight to the point, keep it up!

[@KaizerPowerElectronicsDk]

Thank you very much :)

[@danyalahmad2097]

@@KaizerPowerElectronicsDk can I use it for 100amp battery charging

[@KaizerPowerElectronicsDk]

@@danyalahmad2097 Your are not supplying enough information to give a useful answer

[@DanielMelendrezPhD]

Finally a clearly explained video. You gained a new sub!

[@MrPlytiger]

these are very popular with the RC community for driving high power charge controllers. I have also used these to drive car high power car amplifiers indoors and they work very well.

[@KaizerPowerElectronicsDk]

Cheap, easy to find and I have used them for induction heating, 3d printer, fans, dc motors and so on. About the best PSUs there is to the money.

[@adamfpv8294]

I also want to use one for a car amplifier, did you use a battery or some capacitors inline with the psu?

[@srirachaowner9478]

@@adamfpv8294 the battery would be better than the cap since it could help out on some quick burst power the amp draws

[@adamfpv8294]

@@srirachaowner9478 capacitors have a much higher discharge rate, or are you referring to capacity?

[@srirachaowner9478]

@@adamfpv8294 yea the capacitys of regular caps that you find ob amazon for like 60$ i mean those arent good. But supercaps are different

[@HellVolk]

ME SALVOU MUITOOOOO, estava quase levando a fonte para o conserto. very thanks ♥

[@boo421-o5t]

I have problem on mine. The led stays on 1sec and turns off

[@hasger1941]

Hello please can you show us an easy way how to increase the voltage on these to 13.8v

[@Marc_Wolfe]

Frome what I can tell, the HSTNS-PR01 PSU is interchangable. I shorted the pins mentioned here, and it spat out 12 volts. Looking at getting a Vega 64, so the 800 watts will be useful. Going to splice some cables so all GPU and motherboard 12 volts comes from the server PSU, and a 450 watt SFX PSU I have laying around will handle the other voltages and 12 volts to drives etc.

[@enkhbayar.n]

do make a video

[@Marc_Wolfe]

@@enkhbayar.n So far my 540 watt is doing fine; might not bother.

[@evabaroni6693]

Others in the RC forums say you need pin 30 connected to 12v output if going more than 100w or so.

[@KaizerPowerElectronicsDk]

I have pulled 68A continuesly from this with just that bridge in place :)

[@eksine]

if you notice pin 34 is a shorter tab, makes identification easier

[@platinumsky845]

One minor correction I'd like to make, here in the US you can easily find servers that run off of 240 v. In fact I just purchased one that runs just above 2.4 kw, 200 amps output.

[@Marc_Wolfe]

It's about the plugs that are typically in our walls. Only common 240 volt outlets are the giant ones used for things like driers and stoves. Most of us have 240 going to our breaker boxes.

[@danyalahmad2097]

Can we use this for battery charging

[@gammaleader96]

Interesting, great little look at the PSU. Atleast pin 34 was a dead giveaway, since the enable pins are alsways the shortest of the control pins. (Atleast on all server PSUs I have ever seen) Especially the newer kind with a fan control is really nice since the fan won't always run full power. PS: did you get my mail? :)

[@KaizerPowerElectronicsDk]

Not all have different length on the control pins, but the wide tracks can usually be ignored. I got your email, I see it was received 1st July, was some hectic days to get finished at work before vacation, so a lot of stuff went by fast :) Thank you for the files, its all downloaded and I really should finish the video on the first one :)

[@gammaleader96]

@@KaizerPowerElectronicsDk Interesting, good to know that the pin length rule dosn't work on all supplies. Great to hear and looking forward to your videos. :)

[@aydnsezer5547]

THANK YOU SO MUCH FOR THE VIDEO IT HELPED A LOT

[@themeeksproject9785]

I WAS WONDERING CAN THIS ALO BE A 14V OUTPUT?

[@Simion_T]

Possible, with a screw-type/precision potentiometer between pads 33 and 40: kzbin.info/www/bejne/nWLTpI2rrsRpkLM. Schematic: kzbin.info/www/bejne/p3XIfXtsrt-fmNk

[@NicolòMoioli]

Thank you for sharing!

[@enginedave]

You can drill small holes for blinding posts

[@Technotroniks]

nice work and good information ....thanks

[@Marc_Wolfe]

Came across a couple that look interchangable to that, for dirt cheap at a scrap yard. Was actually the entire server and i pulled parts. Paid $2.

[@KaizerPowerElectronicsDk]

Good deal :)

[@trentoncorbet1]

Any idea on the Pinout for the flex slot type power supplies ? Thanks

[@hawkins2211]

Hello sir Do i need to use both lower and top negatives together? Or can i use one side to solder plugs too to use as a power supply

[@KaizerPowerElectronicsDk]

They are internally connected, I just used both sides for most possible contact surface for high current.

[@hawkins2211]

@@KaizerPowerElectronicsDk I have bridged the on off oins 34-31 correct? But when i plug it in the light goes on then immediately turns off and i dont read 12volts on the main +&- I am confused Any ideas sir?

[@hawkins2211]

@@KaizerPowerElectronicsDk any help would be appreciated Wheni plug it in the light comes on my charger i want to use turns on for 2sec Then turns off?! The light turns off and the fans dont even spin up! Please help!

[@meghansuncle2116]

do you know is the htns-pr01 also shorting pin 32 and pin 34 to power on? Or different pins?

[@emanuele933]

i have one, crazy and very stable power in such small space, not too margin to regulate voltage (max is 13.8 if i remember right)

[@KaizerPowerElectronicsDk]

There seems to be aditional wiring and possible a potentiometer to add to make it run full load at overvoltage. I only needed 12VDC for this mod.

[@pugnate666]

Great Video! Thanks!

[@dempa3]

Thanks! Very concise and informative. Need to find a source of servers PSUs for cheap! Would be interesting to see an instruction of connecting PSUs in series from you. Is 36V the limit, or could one connect four for 48V? Still looking forward to that IKEA Tillreda video number 3 with a closer look on how to hack the electronics of the induction cook top! :)

[@KaizerPowerElectronicsDk]

I got a video on making a 36V cluster from DPS-750 PSUs: kzbin.info/www/bejne/roOknYt5r9iMabM The limit of 3 in series seems to be a limit on the output components specifications and possible bad voltage sharing, most people that have 4 in series experience that the PSU in the end of the chain at ground rail fails after a short while.

[@dempa3]

@@KaizerPowerElectronicsDk Many thanks for the reply!

[@KaizerPowerElectronicsDk]

I was ignoring the ikea tilreda question a bit, I feel bad about absndoning that project for so long :)

[@dempa3]

@@KaizerPowerElectronicsDk There is no reason to feel bad. But there are several reasons to continue the tillreda project! :D

[@jimmylim85]

Is there a method of shorting pin to increase fan speed or the fan is thermal control? Cause previously I’ve tried shorting pin on my Dell 650W psu so that whenever I want.

[@KaizerPowerElectronicsDk]

Some are thermal controlled and some are always on at full speed.

[@frollard]

"You can put 3 in series for 36vdc..." "- is attached to chassis ground" ...Would that not cause a massive short to ground when psu2 or psu3 was connected to + of psu1?

[@KaizerPowerElectronicsDk]

You have to modify the secondary side grounding, check this out: kzbin.info/www/bejne/roOknYt5r9iMabM

[@stevesrt8]

Thank You! good tips. cheers

[@michaelparadigm7836]

I have a dell N750P-SO, that I’m trying to get 13.5-14.5v out of. Can you help with bypassing the OVP?

[@KaizerPowerElectronicsDk]

Try to locate some potentiometers and find the IC part numbers that they connect to, maybe you can find the OVP circuit that way. For some higher voltages, you need to change out some resistor networks as well, to get above 13V. Depends on the various models, how tightly build to their 12V specification they are.

[@meghansuncle2116]

I accidentally put a load across the 12v and pin 34 now the psu will not turn on. Is the thing dead or did I just blow a fuse?

[@KaizerPowerElectronicsDk]

The 12V output is protected by current limiting and should reset upon current draw below threshold or from a power cycling (turn it on/off). If this does not work, you have most likely destroyed something in the controller circuit.

[@meghansuncle2116]

@@KaizerPowerElectronicsDk yeah it's dead. I could open and trouble shoot it if I felt like it....nope. Thanks for the answer.

[@lifeafterlife9939]

Good morning, sorry, with a dps 800 gb-2A is there something different than this in the video? Thanks

[@KaizerPowerElectronicsDk]

I assume its the same, from being same product number, but check out my other server power supply videos for a walk-through on the method to reverse engineer these power supplies.

[@darumaprb8500]

men I buy one of those and put it a resistor to 32 to ground like others video clips and what happen was it blows something inside ,it hurt me because it was brand new ... first I put the jumper and the resistor and plug to the outlet and the light ,don't the start ,but the fans work , I take Out the resistor and star great but in 2 min blows inside ...the damage was done ,...

[@srirachaowner9478]

Which resistor?

[@selmanefarescherifi4283]

I want to know how to tell the efficiency rating of these power supplies, am new to these stuff i found the exact psu, planning to use it for mining, thanks in advance ❤️

[@KaizerPowerElectronicsDk]

Look for the power factor rating.

[@selmanefarescherifi4283]

@@KaizerPowerElectronicsDk where can i find that? I didn't find that 80+ rating sticker

[@KaizerPowerElectronicsDk]

@@selmanefarescherifi4283 find the datasheet online. A modern SMPS is close to 89-96% efficient

[@selmanefarescherifi4283]

Planning to buy the same psu u used in the video, does it show how much efficiency it got?

[@mnatilli9161]

since this PSU also outputs 5V and 3.3V, surely someone could make a board with a 24 pin motherboard connector, 8 pin CPU power connector and other accessory connectors too right?

[@KaizerPowerElectronicsDk]

There is plenty made! Just google for "server psu breakout board"

[@Nick_G7IZR]

Can you turn it off and on by fitting a switch across those jumper pins?

[@KaizerPowerElectronicsDk]

Yes.

[@SLOposum]

Great video! How would you make a bridge to connect a breakout board? Not much space.. a thin wire?

[@KaizerPowerElectronicsDk]

Yes, I just use a small piece of wire.

[@Milons]

Do you know how to power on th DPS-800AB-11A? It have different pins. Thank you

[@Aizen732]

Should I float only one power supply if I plan to power 24v led stripes from it?

[@KaizerPowerElectronicsDk]

Yes, you can leave the one at the negative rail be grounded and float the one at the positive rail.

[@droy402]

What does the barely noticeable blue inscription mean?

[@KaizerPowerElectronicsDk]

Where?

[@alokcom]

How to identify 5V or 3.3v from this SMPS

[@KaizerPowerElectronicsDk]

Check out my different server supply videos to see the method, using a multimeter and 1k resistor.

[@MAD20248]

can i use this charger in parallel with an Agm battery to feed a 12v inverter?

[@KaizerPowerElectronicsDk]

You properly could, but remember that the highest voltage source will draw the most current. You have to think in impedance matching, I assume you want the PSU inthere to draw power from that and incase power fails, it runs on the battery instead? Its not that simple to just float a 12V battery, you will need to take it out and recharge it properly once in a while.

[@MAD20248]

@@KaizerPowerElectronicsDk My PSU is 1200 W and my inverter is arround 1800, i need the battery to kick in case the load goes above 1200w.

[@MAD20248]

@@KaizerPowerElectronicsDk my system is 240v 50 hz to 110 60 hz converter using a power supply and inverter.

[@Technotroniks]

can you help to Modify a great wall Server Power Supply ?

[@nikolabalint1314]

Hi, I want to power my mining rig this way.My concern is that it output 12.4-12.6V, can this voltage damage GPU? Also should I expect voltage drop to 12V when I connect the load(in my case gpu)?

[@KaizerPowerElectronicsDk]

Try to measure the the +12V rail on a regular computer PSU that you would connect to a miner without asking questions, its not stable at 12.000V

thank you , search this video in the internet , liked

[@inagerli]

HI, what you think how many amper it can continously produce ?

[@KaizerPowerElectronicsDk]

Use Ohms law to calculate it from 1000W and 12V

[@inagerli]

@@KaizerPowerElectronicsDk ;))... thats the unreal theorie. the real current you can test on the shunt or other power device.

[@KaizerPowerElectronicsDk]

@@inagerli they have built in over load protection that shuts down and restarts at next mains cycle.

[@inagerli]

@@KaizerPowerElectronicsDk ok, thank you !

[@cryalowicki]

Why are they series limited to 3?

[@KaizerPowerElectronicsDk]

The voltage sharing does not seem to be perfect. The specifications of the output components does not seem to handle 4 in series very well, the PSU closest to ground will often fail.

[@mr.electronicsdevicevlog9333]

Thanks for sharing sir

[@KaizerPowerElectronicsDk]

Most welcome

[@danernorbi]

I have the same power supplies dps-800gb a Four of them i live in europe end i measured end can supply 1200 w at 12 volts

[@KaizerPowerElectronicsDk]

You should be able to get 4 times their single rating

[@rayams]

Thank you

[@marcelogouveia9614]

Thanks bruh !!!

[@redsea5397]

Could i have Fujitsu DPS-800AB-1 A pinout diagram please?

[@KaizerPowerElectronicsDk]

It is in the description.

[@mprelectrical]

Hello, Would it be possible to charge a 12v 100Ah Lithium battery with this PSU, thank you.

[@KaizerPowerElectronicsDk]

You will always need a charge controller for batteries, to ensure safety and lifetime of the battery.

[@AngeEinstein]

Can you simply connect the outputs in series?

[@KaizerPowerElectronicsDk]

Yes, but then you have to shield the metal cases from touching and not connect a main ground, as the negative rail is connected to the chassis. You can also remove the secondary ground connections as I show in this video: kzbin.info/www/bejne/roOknYt5r9iMabM

[@avinraikwar3650]

Can we use 360v DC as an input ?

[@KaizerPowerElectronicsDk]

Theoretically you could inject a DC voltage to the DC bus after the mains rectification. But there could be some measurements you have to fool, to make it run like that. I am not sure about up to 360VDC, but regular rectified 230VAC is 320VDC'ish.

[@avinraikwar3650]

@@KaizerPowerElectronicsDk thank you soo much for the reply , but still I will try this , I think the supply should have some kind of over voltage protection . I will let you know what will happen at 360VDC 😅.

[@bizsis]

Do you have any idea with HP DPS-1400CB A?

[@KaizerPowerElectronicsDk]

Is it much different from DPS-1200?

[@faizalraazy91]

Thankyou sir

[@yigen8]

What are those pin 31 33 34 etc mean?

[@concept-seven]

How did you know it was a 4 layer board?

[@KaizerPowerElectronicsDk]

I saw pictures of others that have drille through and holding the board up against light you can see at least one track that goes between both sides as there is no track on either side, but there is a shadow of a track.

[@peterpauldonoghue7024]

13.8 V dc ?...which pins ?

[@KaizerPowerElectronicsDk]

Needs to be modified in the feedback circuits to get such a high voltage, not all server PSUs can be pushed all the way up to 13.8V, some start to fail and stop over 13V.

[@Simion_T]

33 -> screw potentiometer -> 38 kzbin.info/www/bejne/nWLTpI2rrsRpkLM

[@dailesy4461]

Thankyou

[@fredoforiagyekum5489]

Hello, please can anyone help me with my Delta Switching Server Power Supply AHF-2DC-6000W or Delta P/N ECD17020013 REV.00 the pin out, thank you very much.

[@KaizerPowerElectronicsDk]

See my other server power supplies hacking videos for the method to safely locate the correct pins.

[@chameleon9909]

HP DPS-800GB -1 A - to start bottom 26 to ground

[@rinopravato1285]

gracias.

[@dlaczegotakpowazny1474]

Could anyone help me? I bought an Astec DS450-3-002, works just fine but this fan. Its louder than kids in my neighbourhood. I tried bridging Tach_1(FanFailSignal) to the ground, but didnt work for me. Here is a link to the datasheet www.express-technology.com/getsheet.php?id=2156075 If you have any ideas, please share them with me.

[@piovo1]

how can I get 13.5v from this?

[@KaizerPowerElectronicsDk]

try this: www.rcgroups.com/forums/showpost.php?p=27732783&postcount=55

[@piovo1]

@@KaizerPowerElectronicsDk appreciate it!!!

[@darumaprb8500]

men I buy one of those and put it a resistor to 32 to ground like others video clips and what happen was it blows something inside ,it hurt me because it was brand new ... first I put the jumper and the resistor and plug to the outlet and the light ,don't the start ,but the fans work , I take Out the resistor and star great but in 2 min blows inside ...the damage was done ,...