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vegplot



Joined: 19 Apr 2007
Posts: 21298
Location: Ynys Môn
PostPosted: Wed Jan 28, 15 5:13 pm    Post subject:  Reply with quote    

Power your laptop direct from 12volts and avoid all the inverter lark. Manufacturers don't make it easy though.

dpack



Joined: 02 Jul 2005
Posts: 35096
Location: yes
PostPosted: Wed Jan 28, 15 5:39 pm    Post subject: Reply with quote    

if only it was simple .mine feeds at 19 v ,so not only the inverter loss but the lappy transformer as well as the internal conversion from battery/direct feed to the board voltages

im sure most of this sort of thing is due to historic choices about electronics working voltages ,battery efficiencies etc but a pooter that could feed direct from a 12 v supply (or a simple splitter to 6)would be ace

Hairyloon



Joined: 20 Nov 2008
Posts: 15216
Location: Today I are mostly being in Yorkshire.
PostPosted: Wed Jan 28, 15 5:44 pm    Post subject: Reply with quote    

dpack wrote:
if only it was simple .mine feeds at 19 v ,so not only the inverter loss but the lappy transformer as well as the internal conversion from battery/direct feed to the board voltages

im sure most of this sort of thing is due to historic choices about electronics working voltages ,battery efficiencies etc but a pooter that could feed direct from a 12 v supply (or a simple splitter to 6)would be ace

If it is designed for 19V, it will probably work on 18V...

wellington womble



Joined: 08 Nov 2004
Posts: 14971
Location: East Midlands
PostPosted: Wed Jan 28, 15 9:12 pm    Post subject: Reply with quote    

vegplot wrote:
wellington womble wrote:
keeping my electronics in there (...take mine to bed with me!)



Too much info.


I should clarify that I am discussing my wordly goods, which consist of my iphone, ipad, current knitting project, wallet/chequebook, file of Important Documents and back up external harddrive). It means if I hear noises in the night I can bury my head under the duvet and know that unless they nick the coffee, I can sort it out in the morning, and if there is a fire, we can exit the building with our actual and administrative lives intact!

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