HP DPS-1200SB A Power Supply Voltage Hack. My Values.
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- Опубликовано: 21 авг 2024
- Big thanks to Mr BBI @BoxBuilderIdaho for his video on this Power Supply. I would encourage you to watch his video as he goes into much more detail than I have. Plus, he has a good source on where to purchase these. Here is the Link to his video. All the credit goes to you man.
• let's volt Mod a Hp,dp...
Resistor values I tried and used.
15K and 47K = 14.4-14.9 VDC
18K and 47K = 14.04-14.6 VDC
22K and 47K = 13.7-14.19 This is what I used for mine and set to 13.84. On a second one, I set it to 14.04 VDC. These are only used mainly for radios and peripheral devices. If you want more voltage, see BBI's video.
@BobsTechTips
Thanks for watching N5BSB
Thanks for the update building my power supply for the bench!!!!😀
Nice.
I think it would be helpful if everyone put in the comment the various different volts and resistance they used to arrive at what they want.
I am using 10 of these same power supply units.
I used 14k480 for the crowbar and 10k for the pot and got 15.5 volts .
Load test to 70 amps quite easily.
I have had to order 4 more units for a total of 14 to get the desired 1000 amps.
I do not need that much just yet . This gives me a ton of head room .
Hello,
Is there any way to slow down the voltage to 10.5V ?
By the way, I'm using HP HSTNS-PD18 750W.
Thank you.
How many volts of mains input were these experiments made with?
Was it made with 240v?
@mesutyalcin5965 i have done both my set up is 2 run on 110 for a demand up to 160 amps. Or 220 for around 95 amps.
Then for bigger stuff like my 2 x 10 ,i use 4 of the hp supplies at 220 even at 220 tho running 15.5 volts i still only get about 85 amps per each unit.
@@randyguay7115If I use the same 18k and 47k, will I get 220v and 14v values?
Your welcome.. And good video
I tried the 18k and 51k and got 14.04...I want 13.8 so will try the 22k and 47k..thanks for the info much appreciated
That's a tight tolerance. But I suppose its easy enough to find the right combo so why not get exactly what your aiming for. 😊
Good job 👏👍👍
How many volts of mains input were these experiments made with?
Was it made with 240v?
Why didn't you just leave it at 14.8 if you're powering a ham radio as that's well within the specs; wouldn't a little higher voltage actually make it run cooler since amperage is lower? Anyways, did you buy a resistor assortment pack or buy them individually. The assortment packs don't seem to have some of the ones you used or BBI used but a whole lot of ones to low or too high that I'd never use.
One of my radios is sensitive to high voltage. I'm a retired Electronics engineer, so I have plenty of components lying around.
i have similar powersupply (liteon) that came from china as a car battery charger with a digital display and a pot on the top to adjust output amps.. it suddenly stopped working. it have a power on led on the front and it does not come on enymore when i plug it in to the wall.. any idea what might have blown as it was used from a diesel generator to charge batteries :D i had a look inside but could not see any fuses.. it worked for a year but was kept in a cold space all the time..
Where does the 2nd resistor get soldered to and from?
Pienso comprar una fuente de esas para ponérsela ami pc
At voltages greater than 14 volts, does the power supply not go into protection?
This is a problem I had with lesser versions of the HP PS series.
How many volts of mains input were these experiments made with?
Was it made with 240v?
@@MESUTYALÇINPAŞA For me, 120V. That shouldn’t affect output voltage, at least when unloaded.
Most of us doing this add a resistor to trick the crowbar into a higher volt and amp protection mode
@@barthchris1If I use the same 18k and 47k, will I get 220v and 14v values?
How stable is the voltage
Very stable
@@N5BSB really i would lik to see that
@@terrysookhoo2528They are pretty much rock solid, they have to be. If the server bios detects voltage fluctuations at the 12v side then it'll start screaming and eventually shut down if they become bad enough.
These PSU's are designed to run multi processor servers with anything upto 26 HDD's spinning at 15k rpm, plus the fans, redundant bios, multiple NIC's, PCI-E, sata controllers, raid controllers, USB controllers/drives/card reader, Host Bus Adapters, optical drives, internal backup drives (tape/optical/HDD), on board VGA, GPU's, compute cards, keyboard, mouse, remote management etc. 24/7/365.