On Wednesday 03 June 2009 07:29 pm, Gregg Rawson wrote: > There is an additional feature on some online UPS's where there is > buck/boost circuitry. If there is a brown out, and it is just above > the cutoff voltage, the equipment will keep running on the low > voltage on a normal UPS. With the buck/boost feature, the voltage > will be brought up or down to a normal level as required.
Online UPSes are what we have at the data center. This discussion has been about my office, where I cannot afford online UPSes. I wish I could. My Smart-UPS units are all almost ten years old and have been refurbished at least once (two of them twice). It may just be time to move away from them; replacing batteries and refurbishing them costs as much or more than the cost of new Back-UPS series UPSes, which are stepped square wave, but if one reads that link at the bottom of my last post to this thread ... that's not a problem. Jeff -- Jeff Lasman, Nobaloney Internet Services P.O. Box 52200, Riverside, CA 92517 Our jplists address used on lists is for list email only voice: +1 951 643-5345, or see: "http://www.nobaloney.net/contactus.html";
