No. of Recommendations: 0

1) Functional: The double conversion type completely isolate the load from the line and provide flat voltage regulation.

Of course the downside is these conversions are not 100% efficient, so you have extra power consumption and generation of heat (especially a concern when A/C is in use). Also UPS's don't generally produce true sine waves, largely because sine-approximations work just fine with most products. But for the rare situation where a good sine wave is preferred, one might be better off with a UPS that only cuts in when needed.

2) Non-functional: It bugs me that a leading manufacturer has been using misleading labeling for decades (uninterruptable is, well, uninterruptable as in Uninterruptable Power Supply rather than UPS as in "keeping something up").

I believe they mean that the operation of the device plugged into their product continues uninterrupted even if the power fails. Not that the power itself is literally uninterrupted. Perhaps a better name would be Uninterrupted-operation Power Supply. Seems kinda unwieldy though.

Print the post  


What was Your Dumbest Investment?
Share it with us -- and learn from others' stories of flubs.
When Life Gives You Lemons
We all have had hardships and made poor decisions. The important thing is how we respond and grow. Read the story of a Fool who started from nothing, and looks to gain everything.
Contact Us
Contact Customer Service and other Fool departments here.
Work for Fools?
Winner of the Washingtonian great places to work, and Glassdoor #1 Company to Work For 2015! Have access to all of TMF's online and email products for FREE, and be paid for your contributions to TMF! Click the link and start your Fool career.