Author Topic: HP HSTNS-PL11 24vdc output  (Read 688 times)

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Offline l7777Topic starter

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HP HSTNS-PL11 24vdc output
« on: September 10, 2022, 06:24:48 pm »
Greetings.  I've got a number of RC related things that would like 24vdc and a number of watts below the 900 that this can output.  Would it be possible to modify the HSTNS-PL11 to output the 24v directly?  I've seen the info on adjusting OVP and output but no one has tried to really increase the voltage beyond ~15vdc.  Obviously the output capacitors would need replaced to handle the extra voltage but are there other components that would prevent/be unhappy about said output?

I know I could run two of them in series to get 24v and 1800 watts but I don't need that much wattage and would be carrying around a fair amount of extra weight.  The other option is trying to find a boost converter that could handle the job.  Problem is most of them are relatively low wattage and questionable quality.  Not sure I'd really find one I could trust to even do 600 watts.  Same goes for the available off the shelf 24vdc power supplies I've seen without spending lots of $$.  Low wattage, questionable quality, and usually a fair bit larger than these.

Yes this is probably ill advised and definitely can be dangerous as we're working with high voltage AC and low voltage but high amperage DC.
 

Offline NiHaoMike

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Re: HP HSTNS-PL11 24vdc output
« Reply #1 on: September 10, 2022, 06:34:26 pm »
Many if not most HP server PSUs use a full wave configuration for the output, you could add some power Schottky diodes to turn it into a full bridge rectifier. It would still be a pretty big modification and just getting a 24V PSU for a 3D printer would likely be easier.
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