[Dclug] UPS hacking; was DSL
edjames at greenbelt.com
Mon Jan 7 04:25:59 EST 2008
I wonder if perhaps a box of NiCads (or whatever) might be better?
Seems strange to take house current to keep high-voltage batteries
charged, and then convert their power into AC, just to convert it
back to DC for various DC devices via the usual wallwarts.
For example, 7 1.5 volt cells in series would supply 10.5 volts to run
a 10.5 volt DSL modem. I'm thinking wallwart, thru a diode, to the
NiCads, then NiCads to the Modem.
I've seen setups where a car battery feeds a circuit board which in
turn produces the different voltages needed by some mobos, so that
the clunky power supply isn't even needed.
>>> I wanted to build a DC battery backup for my toy boxes (Linksys, SMC,
>>> Cablemodems) but that still leaves the cisco switch and router to be
>>> UPS'ed. Just holding up the WAP and cablemodem for 12 hours would be cool
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