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| E36300 Series Programmable DC Power Supplies (E36311A, E36312A, E36313A) |
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| alm:
That sounds odd. Are you sure it is not just that the fan keeps running for a while after turning of the supply to keep the temperature down. Not that I have seen this in power supplies before, but it would seem more likely than designing something with such a ridiculous standby power usage. I wonder if this is some sort of defect, do other owners measure the same? |
| pe1oxp:
--- Quote from: alm on August 17, 2017, 06:31:43 pm ---That sounds odd. Are you sure it is not just that the fan keeps running for a while after turning of the supply to keep the temperature down. Not that I have seen this in power supplies before, but it would seem more likely than designing something with such a ridiculous standby power usage. I wonder if this is some sort of defect, do other owners measure the same? --- End quote --- I mentioned it the next morning after using the power supply and tested it a few times now, after plugging in the mains lead the fan starts running slowly directly. So most of the electronics inside must be powered up. The difference between both power states seems only be caused by the display and of course all buttons don't work. |
| bitseeker:
That sounds really odd. Does anyone else's 12A or 13A also have this always-in-standby behavior? |
| adamgreig:
Just checked my '12A and I see the same 10.4W standby, 12.5W or so active but no channels enabled. Hasn't been turned on all day so definitely isn't to finish cooling down after a heavy workout or anything. Pretty weird. I think I can just about hear the fan (something of a pain to look at the back with my setup) but it's extremely quiet, I wouldn't have noticed if I wasn't looking for it. |
| Keysight DanielBogdanoff:
I've been using an E36312A casually for the last couple weeks and can confirm that the fan does turn on even if the unit is turned off - but the fan is really, really quiet. So, there's not an audible noise issue for me at all. I'll talk to that team and see what they say about the standby power consumption. If it's an issue, you can always run a hard switch with a power strip. Overall, though, I've been loving the supply. |
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