Right,also ive read that old PSU need pure sinewave and i could not find the exact release date for the Antec but have seen reviews as old as 9yrs.Ok.. Well... everything you plug into the UPS uses power, so you shouldn't be looking at just how much power the PC uses, right?
Line interactive is not always on battery. That's an online UPS you're thinking of. VERY expensive. All line interactive means is that it has an AVR built into the UPS.For my psu, I'd require a line interactive UPS, where it always on battery supplement, not the cheaper ups that is only on AC power until power goes off.
The DC to AC inverter is not always on. The AVR is on the mains. Not after the battery.Right. The Inverter is always on, it's connected to the output, the battery is either charging or discharging, a single switch. Very fast switchover, 2-6ms on average. With a more standard standby ups, it's nothing more than a surge suppressor that has to turn everything over to discharge circuitry first before the battery will discharge. A lot slower.
I missed that part. Maybe it's only true with certain UPS's. Perhaps server PSUs. The charger does not use AC, so it doesn't make sense to keep the DC to AC inverter charged. It would be horribly inefficient to do so. It would also cause the battery to fail prematurely.Line interactive: This design offers additional filtering and yields reduced switching transients since the inverter is always on and connected to the output.
Inline circuit, the Inverter is the charger, doing double duty as AC to DC or DC to AC depending on the transfer switch.
So how do i know the exact power my pc uses?Shopping for a UPS that'll work for your pc is a pain in the rear. You really have to do some homework as to what the requirements are and what the needs are and what the differences are.
I have a Minuteman 700Pro. Very good little UPS, simulated sinewave. Worked great on my old Seasonic M12-II pc, no issues. That's an old, group regulated psu. Doesn't work on the newer pc with a Evga G2 550w, even though that was a very highly rated psu at the time. Reason being, the Minuteman has a switchover time of 15ms, but the Evga only has a holdup time of 12ms. So when the power goes off, the psu shuts down before the UPS kicks in.
For my psu, I'd require a line interactive UPS, where it always on battery supplement, not the cheaper ups that is only on AC power until power goes off.
Also have to figure how much life you want once power dies go out vs power usage by the pc. Pure sinewave UPS generally have very short battery life, maybe 10-15 minutes, whereas full loads on simulated sinewave UPS can be 30 minutes or more. So you'll need a somewhat accurate guess as to the power use of your pc, so can guage full load times, amount of watts needed etc.
Anyone can just buy something cheap and get a decent voltage output, but if full load sucks it dry in 3 minutes and you are expecting 30minutes, you wasted your money.
Reviews are a decent source of info, if professionally done, but wiki and Google will be of more use, just figuring out exactly what a UPS is, what are the different kinds, what you'll need etc.
I'll speak for the Brand. I currently use the 1000VA and it has done a first rate job, very dependable. Power in our area has a tendency towards occasional momentary brownouts as well as power going down. The UPS has always switched over by the time I realize the power had gone off. Software is fairly good, no complaints for this personal user. Price on the one you mentioned very good. Others have great comments here so it's just going to depend on your needs and rig's power draw. I always plan for a minimum of my computer and the monitor, since you'd need a monitor to be able to shut down if you don't have it set up for automatic shutdown (mine does if I'm away from desk, but pefer to manually save work and shut down if I can. I also use a Cyberpower UPS for my TV and DirecTV box (of course, w/out the additional software).