-=> MATT MC_CARTHY wrote to WAYNE CHIRNSIDE <=-

 WC> Think it was Tom Walker who mentioned USB 2.0 devices were
 WC> backwards compatable to 1.1 which would be outstanding as UPS's have
 WC> come down in price and I'd like to do clean shutdowns under software
 WC> control in the case of power interuption.  60 bucks now buys you 8
 WC> minutes at near double my current draw.

 MM> Try this one:

 MM> http://saveateaglestore.site.yahoo.net

Thanks, saved, will look today.

 MM> Click on "Accessories, then "Power Supplies/Backups"

 MM> Go down to the $39 UPS, 500VA, takes a standard 12V-7AH battery, but it
 MM> looks like enough space to put in a 12V-11AH battery with removal of
 MM> some foam padding.  My dealer got one and tested it at 17 minutes on an
 MM> Intel 2.6G system with the 17" monitor running.   He bought three more
 MM> and I'm ordering my second one right now as I type this.

 Well this system draws so little current I could likely go with some
 external batteries without overstressing the semiconductors.

 MM> This one CAN be turned on AFTER the power goes off, so it could be used
 MM> for "portable power", unlike the APC brand.  It is
"Made in China",
 MM> fairly light weight, NO names, numbers, nothing on it, and the label on
 MM> the shipping box is cut off!

 Heh.
 When I was a bit fitter I would have constructed an inverter myself
 using CMOS johnson counters with resistors to get a close
 approximation to a sine wave then drive a bunch of power FETs.
 What I had in mind would have been plenty rugged.

 When the heck is someone going to produce a standard ATX power supply
 designed from the get go to be driven from either 120 AC or 12
 volt deep discharge batteries?

I _had_ a torroid salvaged from one of those ultra high powered car
amplifiers and was going to have a go at modifying one of my spare
AT power supplies but lost that item last move :-(


 MM> Eagle is in Cordova TN, and shipping to here was only two days for
 MM> ground.

 MM> While there check out their "Clearance", and "Very
Cheap Hardware",
 MM> (left on screen in box marled Specials) lots of goodies there!

Saved, thanks.
Will drop by their site today.
 
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