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[_] (OT) Basic electronics

adam armfield adamairmailed at yahoo.com
Sat Aug 12 12:18:06 BST 2006

12v lines... yes

hello, my names adam, i've been lurking for a while...

can't find the link but i read one recently

a house in the states normally consumes 45Kw/h per
day

by putting in 12v as well as 110, they reduced this to
800w/h

most stuff ran on 12v, stereo. lcd tv etc. even a 12v
washing machine

as far as i can see most modern electronic stuff only
needs this much... using transformers chucks away a
load of energy (turns it into heat)

i've been pondering writing to the council &
suggesting they rip out all the power supplies in
their pc's and have some big 12v loop in the
building... maybe not exactly that but power over
ethernet looks good

in the meantime it also looks sensible to use as much
bus powered (usb etc.) stuff as poss rather than
transformers (that said i'm still using a serial
modem, i have got a little usb one somewhere, maybe
i'll break it out again)

i have some doubts that 12v would be enough for all
situations... but it certainly looks to me like
anything 12v is ideal for powering by wind/solar etc.
leaving big stuff (cookers/hoovers/my ludicrous 7.5kw
shower) to the mains...







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