A lot of things we deal with are pre-engineered. You just plug stuff together and it works. The square wave UPS supplies are pre-engineered to work with computer switch-mode power supplies. These people are talking about UPSs for equipment that was pre-engineered for sine wave power. If you hook up equipment that was not pre-engineered to work together you are not sure what is going to happen. I remember when they first started adding some alcohol to gasoline. The cars seemed to run OK with just a decreased mileage. Later on they found fuel system components being damaged because the alcohol would pick up moisture from the air and become slightly acidic. The fuel system components had not been pre-engineered to be compatible with acidic fuel. Jerry Silverman Greentron Inc 4 Newland Ave Greenville SC 29609 864 232 3889 Fax 271 2080 mailto:greentron@xxxxxxx ----- Original Message ----- From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Friday, May 07, 2004 2:44 PM Subject: [TechAssist] Re: use a battery backup UPS for TV,DVD,surround amp system protection ? > Shoot, jerry why are your facts so depressing! > Seriously, I called APC, and the tech said the "stepped sine wave" > versions may not work satisfactorily with , say, an engraving machine > (My next door neighbor has a trophy shop). he suggested their better > Smart UPS line, I think its called.Anyway, it would be sort of self > defeating to destroy the very thing you are wanting to protect... > Phil Bader > > J Silverman wrote: > > >The computer power supplies work fine with the 115 VAC (RMS) square wave > >output from the low cost UPSs. Most consumer electronic equipment is rated > >for 115 volt RMS 60 Hertz sine wave, plus or minus 10%. If you use the > >computer UPS with consumer electronic equipment the internal voltages and > >losses are different than the spec., so you are not sure if you will have > >functional problems or if things will overheat. A lot of stuff will probably > >work OK, but you cant be sure. So the suggestion was made to use UPSs that > >have a sine wave output and these are many times more expensive than the > >ones with a square wave output. > > > >Jerry Silverman > >Greentron Inc > >4 Newland Ave > >Greenville SC 29609 > >864 232 3889 > >Fax 271 2080 > >mailto:greentron@xxxxxxx > >----- Original Message ----- > >From: "Kevin" <kevintv@xxxxxxx> > >To: <techassist@xxxxxxxxxxxxx> > >Sent: Friday, May 07, 2004 5:30 AM > >Subject: [TechAssist] Re: use a battery backup UPS for TV,DVD,surround amp > >system protection ? > > > > > > > > > >>Using a UPS for a computer is also designed to save what a person is > >>working on at the time of a power outage. When the power goes out the > >>computer stays on and the person can save his work and then shut the > >>computer down properly. In some cases it will also prevent data from > >>being corrupted on the hard drive when the power goes out. Having the > >>power outage causes windows to shut down improperly, which could corrupt > >>data on the hard drive. > >> > >>Kevin Wilks > >>Kevin's TV & Video Repair > >>Penticton BC Canada > >>kevintv@xxxxxxx > >> > >> > >>-----Original Message----- > >>From: techassist-bounce@xxxxxxxxxxxxx > >>[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Hoyt's TV > >>Sent: Friday, April 30, 2004 2:11 PM > >>To: techassist@xxxxxxxxxxxxx > >>Subject: [TechAssist] Re: use a battery backup UPS for TV,DVD,surround > >>amp system protection ? > >> > >>Considering the price of some TVs and stereos these days, I'm surprised > >>they > >>don't push UPS's for those, like they do for computers. Computers were > >>the > >>first things that were overly sensitive but TVs etc. have now caught up. > >> > >> > >>Russ Hoyt > >>Hoyt's TV > >>Exeter, NH > >> > >> > >>----- Original Message ----- > >>From: "Larry Poffen" <lpoffen@xxxxxxx> > >>To: <techassist@xxxxxxxxxxxxx> > >>Sent: Friday, April 30, 2004 3:46 PM > >>Subject: [TechAssist] Re: use a battery backup UPS for TV,DVD,surround > >>amp > >>system protection ? > >> > >> > >> > >> > >>>I have used a APC 1000 for my personal stuff for about 2 years. I had > >>> > >>> > >>a > >> > >> > >>>power surge that took it out this year, along with many other things, > >>> > >>> > >>but > >>my > >> > >> > >>>36" TV &VCR/ stereo stuff were all OK. It is worth the peace of > >>> > >>> > >>mind. > >> > >> > >>>Larry > >>> > >>>Larrys TV Service > >>>Broken Arrow OK 74011 > >>>phone 918-455-1041 > >>>Fax 918-451-4485 > >>>e-mail lpoffen@xxxxxxx > >>>----- Original Message ----- > >>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx> > >>>To: <techassist@xxxxxxxxxxxxx> > >>>Sent: Friday, April 30, 2004 9:06 AM > >>>Subject: [TechAssist] use a battery backup UPS for TV,DVD,surround amp > >>>system protection ? > >>> > >>> > >>> > >>> > >>>>I never heard of anyone doing this, but I've had this thought for a > >>>> > >>>> > >>few > >> > >> > >>>>years: > >>>>use a heavy battery back up UPS like used on PC systems for an > >>>>entertainment center. Many ills are from power > >>>>fluctuations,sags,surges,etc. TV EEPROMs corrupted, power supplies > >>>>damaged, pro-jo CRTs damaged with a spot because it went down at > >>>> > >>>> > >>once > >> > >> > >>>>without proper power down,etc. > >>>>Most equipement is not a heavy current draw. > >>>>Can this be done and should it? > >>>>I have a Zenith 50" projection TV (not wide screen,standard 3:4) > >>>> > >>>> > >>which > >> > >> > >>>>is rated at 215 watts (2.8A) "max". > >>>> I think my VCR/DVD deck pulls maybe 30 watts. > >>>>My Bose "lifestyle 7" surround amp, I don't know the wattage. > >>>>And a cable box maybe another 30 watts? > >>>>I'm guessing 300-400 watts max running everything > >>>> if using the sound system as well. Much less if using only the > >>>> > >>>> > >>projo's > >> > >> > >>>>speakers. > >>>>Now most of these UPS units are in standby mode and the connected > >>>> > >>>> > >>gear > >> > >> > >>>>is running off line current until there is a power loss, which time > >>>>ultra-fast switching transferrs power to the battery system. This > >>>> > >>>> > >>would > >> > >> > >>>>be only needed for intermittant power fluctuations, or if lost > >>>> > >>>> > >>totally, > >> > >> > >>>>enough time to safely power off the audio/video system. > >>>>A 6 outlet power strip plugged into the UPS would be convenient. > >>>>What would be a good power rating for a UPS? > >>>>Twice needed wattage? whats rule of thumb, and also whats your > >>>> > >>>> > >>feedback > >> > >> > >>>>on this idea? > >>>>Phil Bader > >>>> > >>>>-- > >>>> > >>>>Philip Bader > >>>>Jan Phyl TV Inc. (estab. 1976) > >>>>3420 Recker Hwy. Winter Haven, Fl. 33880 > >>>>Fax (863) 299-8821 > >>>>email: tjanphyl@xxxxxxxxxxxxxxx > >>>> > >>>> > >>>> > >>>> > >>>> > >>> > >>> > > > > -------------------------------------------------------------------------- --- > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/