Re: square output UPS vs. bulk capacitor voltage

I checked SC series in not true sine-wave, all other Smart-UPS are.

IF so, who cares about the power company

Saving for expensive UPS then.

Re: square output UPS vs. bulk capacitor voltage

@ PCBONEZ

Then the more expensive models awaits me I know APC Smart-UPS have true sine-wave, but do they have AVR like the Back-UPS RS series, just for the lamp caused buzzing issue.


I still do not have an UPS, the noise is only because of the lamp! Maybe the input filter make the noise interfering with the lamp? Just guessing. Or should I RMA till its new?!

Because I have an answer at corsair site too from RAM GUY:
It sounds like however the lamp dims itself, its messing...

Re: square output UPS vs. bulk capacitor voltage

Travis @ jonnyguru forum told me:

It probably can cope with simulated sine-wave but two primary capacitors don't change anything here. But those caps are connected in parallel, not in series.

so I got an ansfer, but have one other question for you guys:

I noticed that when I have my halogen lamp dimmed and PC even shut down (easier to hear) my PSU make buzzing noise, and stops when lamp off or full power. And of course when lamp unplugged from the wall no buzzing sound either, and same...

Re: square output UPS vs. bulk capacitor voltage

One question, is it safe for me to use a non sine wave UPS in 220VAC for HX850w APFC since it has two capacitors?

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