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Output power of UltraCap LPS-1/1.2?

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What is the output power of the UltraCap LPS-1 and LPS-1.2 units? The Uptone website states that the LPS-1 outputs 1 Amp and the LPS-1.2 outputs 1.1 Amp. Is this output current independent of the selected output voltage? I would expect the maximum current to be higher at e.g. 5V than at 7V, with a fixed max output power P = V x A.

 

I'm planning to power two 5V devices with a single UltraCap unit using a DC splitter cable. At 5V, one device consumes 500mA (2.5W) and the other consumes 700mA (3.5W). So the total power needed will be 6W or 1.2A at 5V. Would that be a problem? Thanks!


Current system: MacMini/PC  >> Schiit Eitr (with Uptone Audio LPS-1, for 5V USB power) >>  RME ADI-2 DAC (with Zerozone 12V linear power supply) >>  Xkitz Electronics XOVER-2, 100Hz active crossover (with Zerozone 17.5V linear power supply + LDOVR LT3045-A, ultra-low noise 15V voltage regulator) >> Schiit Vidar stereo power amp to KEF LS50 speakers + Sunfire HRS12/HRS8 active subwoofer. Cables used: Canare star quad speaker cables; AQ Cinnamon USB; AQ Big Sur & Schiit Pyst RCA; Supra CAT8 ethernet cable (with JSSG) for low voltage DC power; unknown coaxial cables; standard mains power cables (with Airlink BPS1502EU, 1500VA, balanced, mains isolation transformer).

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46 minutes ago, Abtr said:

What is the output power of the UltraCap LPS-1 and LPS-1.2 units? The Uptone website states that the LPS-1 outputs 1 Amp and the LPS-1.2 outputs 1.1 Amp. Is this output current independent of the selected output voltage? I would expect the maximum current to be higher at e.g. 5V than at 7V, with a fixed max output power P = V x A.

 

I'm planning to power two 5V devices with a single UltraCap unit using a DC splitter cable. At 5V, one device consumes 500mA (2.5W) and the other consumes 700mA (3.5W). So the total power needed will be 6W or 1.2A at 5V. Would that be a problem? Thanks!

 

Hi Abtr:

The UltraCap output current is the same regardless of output voltage setting. (1.1A at 5V, 1.1A at 12V)

Actually, every unit of both the original LPS-1 and the LPS-1.2 has been individually certified on my bench to be able to deliver a continuous 1.1A (peaks above that of course, but that is a complicated subject). Most units make it to about 1.13A, and some as high as 1.18A.  But they all trip into over-current protection mode (this is software controlled) before reaching 1.2A.

 

If you are certain that the two 5V devices you wish to attach actually draw the currents you listed, then no, you won't be able to do it with a single UltraCap unit.  Easiest way to know if it will work is just to try it.  If the load is too great the LED on the UltraCap unit will flash red and the output voltage will go off (actually, it flashes red 5 times, then green once as it restores output and checks to see if load is still too much, then red 5 times again if it is--repeating).

 

Hope this information is helpful to you.

Best,

--Alex C.

 

 

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Thanks Alex. I will just try it then. One of the powered devices is the USB interface of a Schiit Eitr and actually I don't think it will need anything close to 500mA (the USB spec). :)


Current system: MacMini/PC  >> Schiit Eitr (with Uptone Audio LPS-1, for 5V USB power) >>  RME ADI-2 DAC (with Zerozone 12V linear power supply) >>  Xkitz Electronics XOVER-2, 100Hz active crossover (with Zerozone 17.5V linear power supply + LDOVR LT3045-A, ultra-low noise 15V voltage regulator) >> Schiit Vidar stereo power amp to KEF LS50 speakers + Sunfire HRS12/HRS8 active subwoofer. Cables used: Canare star quad speaker cables; AQ Cinnamon USB; AQ Big Sur & Schiit Pyst RCA; Supra CAT8 ethernet cable (with JSSG) for low voltage DC power; unknown coaxial cables; standard mains power cables (with Airlink BPS1502EU, 1500VA, balanced, mains isolation transformer).

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Apropos, imitch thought that the RME ADI-2 dac wouldn’t manage thru startup powered by the ultracap - any thoughts, info?


elgar iso tran(2.5kVa, .0005pfd)>consonance pw-3 boards>macmini (16gb ram-ssd-js2 psu-mmk)[hd(naq psu)]>netgear gs105 switch[clones psu])>ghent js ethernet>ultraRendu(js-2)>uspbc>iso regen(lps-1/naq psu)>curious link>rme adi-2 dac>cawsey cables>naquadria sp2 passive pre> 1.naquadria lucien mkII.5 power>elac fs249be + elac 4pi plus.2> 2.perreaux9000b(mods)>2xnaq12” passive subs.

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1 hour ago, jamesg11 said:

Apropos, imitch thought that the RME ADI-2 dac wouldn’t manage thru startup powered by the ultracap - any thoughts, info?

 

Correct. The RME ADI-2 has been shown by several to be too large a load for our UltraCap units.

 

Some DACs we do know work well with UltraCap:

Chord Qutest

Pro-Ject Pre Box S2 Digital

Soekris dac1321

 

Those are just off the top of my head, there are many others I'm sure.  Plus lots of DDCs, USB conditioners, and streamer/renderers.

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Thanks for confirmation on this Alex - I’ll order an lps-2 just for the ultraRendu (when I order the etherRegen) & run the RME off the JS-2 already here.


elgar iso tran(2.5kVa, .0005pfd)>consonance pw-3 boards>macmini (16gb ram-ssd-js2 psu-mmk)[hd(naq psu)]>netgear gs105 switch[clones psu])>ghent js ethernet>ultraRendu(js-2)>uspbc>iso regen(lps-1/naq psu)>curious link>rme adi-2 dac>cawsey cables>naquadria sp2 passive pre> 1.naquadria lucien mkII.5 power>elac fs249be + elac 4pi plus.2> 2.perreaux9000b(mods)>2xnaq12” passive subs.

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/& 1 more thing ... macmini 2012 with uptone mods - 12V,  but what Amps are required?  JS-2 now runs it, looking maybe to flip it to another psu.


elgar iso tran(2.5kVa, .0005pfd)>consonance pw-3 boards>macmini (16gb ram-ssd-js2 psu-mmk)[hd(naq psu)]>netgear gs105 switch[clones psu])>ghent js ethernet>ultraRendu(js-2)>uspbc>iso regen(lps-1/naq psu)>curious link>rme adi-2 dac>cawsey cables>naquadria sp2 passive pre> 1.naquadria lucien mkII.5 power>elac fs249be + elac 4pi plus.2> 2.perreaux9000b(mods)>2xnaq12” passive subs.

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22 minutes ago, jamesg11 said:

/& 1 more thing ... macmini 2012 with uptone mods - 12V,  but what Amps are required?  JS-2 now runs it, looking maybe to flip it to another psu.

 

The phrasing of your question/statement is a little confusing, but I can tell you that a 2012 Mac mini needs a 12V supply capable of at least 4.5 amps.

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You interpreted the phrasing correctly! Thanks for info - now to assess options ...


elgar iso tran(2.5kVa, .0005pfd)>consonance pw-3 boards>macmini (16gb ram-ssd-js2 psu-mmk)[hd(naq psu)]>netgear gs105 switch[clones psu])>ghent js ethernet>ultraRendu(js-2)>uspbc>iso regen(lps-1/naq psu)>curious link>rme adi-2 dac>cawsey cables>naquadria sp2 passive pre> 1.naquadria lucien mkII.5 power>elac fs249be + elac 4pi plus.2> 2.perreaux9000b(mods)>2xnaq12” passive subs.

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