Questions tagged [ups]
A UPS (uninterruptible power supply) is a device used to provide instant backup power to critical systems for safe shutdown in the case of a power outage.
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When do I need a pure sine wave UPS?
I would like to buy a rack UPS that would support all the IT related electronics in a SOHO room. This include switches, routers, PCs, servers, NAS. During my research I found out that there are ...
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If my power supply is 700w, do I need a 700w UPS?
if my power supply is 700w, do I need a 700w UPS?
I am running dual 20" dell LCD's, a i7 quad core system with a radion 4870 1gb video card, 2 hard drives.
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Is the APC BR700G UPS (or similar) compatible with Active PFC power supplies?
I'm looking at getting a UPS for my home computer. So far the APC BR700G looks very promising, except for one thing: one of the reviews on Newegg says that this UPS does not work with a power supply ...
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Is UPS necessary to have for a PC?
Can my computer components ( Monitor, Motherboard, RAM, HDD, CPU, SMPS) become damaged due to a sudden power flux. It's only needed to shut down Windows properly.
Can I solve both Hardware and ...
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Why PC reboots when there’s a power failure even with UPS?
I've purchased a Line Interactive UPS 1200VA. It's supposed to give 8~20min backup (as written in the manual). This UPS has transfer time < 10ms. It works fine when the mains is active.
But the ...
user33289
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Why shouldn't I attach laser printers or scanners to a UPS?
I have an FSP EP1000 UPS.
The User's Manual says:
CAUTION: NEVER connect a laser printer or scanner to the UPS unit.
This may cause the damage of the unit.
Why is this restriction?
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Is a UPS a good investment for a home machine?
Is it worth the money to invest in a battery-backed UPS unit for a home machine? Or is it a waste of money? The purpose of the UPS would be to prevent a "meltdown" of the computer due to bad power ...
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Is it okay to use a UPS without a ground?
I have a UPS unit that I would like to use for a workstation installation that does not have a valid ground (in the Philippines, a true ground is a luxury).
I am not an Electrical Engineer, but I ...
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Laptop Malfunctions After UPS Failure? I Have Got What I Deserved
My UPS failed today and laptop ceased working. UPS failed me before 1 time and it was when laptop was on standby but nothing happened to the laptop however. Also there were times when laptop was ...
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Identify an Unusual USB Port
The back of our APC Smart-UPS 2000 has a USB port so that it can be monitored from a server it supplies.
However, this USB port doesn't appear to be a standard USB connector. It looks a little like ...
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Can I run a computer using DC power?
I always thought that using a conventional UPS with a PC is highly inefficient. Power goes from AC -> DC -> AC in UPS and then AC -> DC in PC SMPS. Since PC works only with DC (12, 5 and 3 volts) It ...
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What is better for power problems, a UPS or a voltage regulator?
I live in a cheap flat filled with expensive, sensitive electronic devices. There is only one electric circuit for everything to plug in. Several times a day, the fridge's compressor wakes up, and ...
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Windows 7 goes into hibernation immediately after the UPS kicks on
I have a UPS that will power my desktop computer for 50 minutes. The idea was that if the power when out I could save/make notes on what I'm working on and then shutdown or hibernate the desktop. But ...
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System connected to UPS goes to sleep short time after power is lost
I have a Win7 x64 system connected to the UPS. The UPS is capable of maintaining the system power for about 30 minutes. After I have connected the UPS, I have verified this by disconnecting the power ...
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CPU cores remain offline after hotplug
When my UPS triggers an "on-battery" event, I want all cores to switch off to conserve power. The PC has 8 cores on two chips, UPS batteries need replacement every 3 months because of high current ...
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