At 7:21 PM -0800 12/26/08, w_tom wrote: > Low voltage is not hard on motherboards. Electronics has been >required to not be harmed by low voltage for generations - even long >before PCs exists. However myths to promote UPSes live on. In fact a >chart from an industry standard 30 some years ago defines low voltage >as not destructive by using this expression even in capital letters: >"No Damage Region"
...<snip> > Low voltage must not cause electronics >damage - despite popular urban myths. > Maybe low voltage isn't the culprit. And yet, plenty of anecdotal experience supports the claim that UPSs are useful. A number of years ago we gave my wife's old machine to some friends down the road when we upgraded. It had worked will for her for a long time, but they kept having trouble with it - They'd bring it back to us, we'd run one of the diagnostic/repair tools on it, fix a bunch of stuff, run it here for a while with no problem, then give it back to them. Within a week they'd be having trouble again. Finally I decided that the prime difference was the power. They were unprotected. We've got a big UPS (sine wave output, not square wave). We're all way out at the end of the power system, and the power is definitely prone to spikes and surges. Our UPS beeps and boops frequently telling us of slumps and surges. We put them on a UPS and the problems went away. Same machine, same use patterns. So don't tell me that UPSs aren't worthwhile. -- Bill Christensen <http://greenbuilder.com/contact/> Green Building Professionals Directory: <http://directory.greenbuilder.com> Sustainable Building Calendar: <http://www.greenbuilder.com/calendar/> Green Real Estate: <http://www.greenbuilder.com/realestate/> Straw Bale Registry: <http://sbregistry.greenbuilder.com/> Books/videos/software: <http://bookstore.greenbuilder.com/> --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed Low End Mac's G3-5 List, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
