Originally Posted by ANDMYGUN
Thanks for your recommendations. I'm very interested in the 1000VA / 600W and the 1350VA / 810W version. I have no problem paying more for the latter but I'm not completely sure if I need it over the other. What do you think? This is going to sound stupid but can you please explain what true sine-wave is? I read about it in the thread you posted above but I'm still having a hard time understanding it. Thanks again.
It is always good to overshoot with your UPS choice - I would recommend going with the 810W if you have no problem paying the extra.
And don't be silly, not stupid at all
Basically there are two ways that a UPS can output power to a load - true sine-wave or simulated sine-wave. The reason why UPS systems use a simulated sine-wave (especially consumer ones) is that it is cheaper (usually the inverter costs have been cut by designing one to output a modified or simulated sine-wave).This diagram should make it easier:
Alternating current (AC) is delivered in a waveform like above. I guess a simulated sine-wave is like regular unleaded, and pure sine-wave is like premium unleaded
He may have some troubles using that with his active PFC PSU as it is not pure sine-wave.
. I use a simulated sine-wave UPS with my active PFC PSU and it works properly, but I have seen scenarios where it does not
Looks like it works with yours too, so its a bit hit and miss!