DC adapter 12v to 20v

[Fingle]

Hi

I want to run my laptop in the van, but think its kinda pointless running an AC adapter, via a 12v dc-240ac volt converter, is there an option to just bump up dc voltages from 12 to whatever v, and amp ?

Thinking about it, theres loads id want to replace the ac adapters for in the van, so it would ideally be adjustable

[andisnewsyncro]

This might do it, depending on what amps you need http://www.maplin.co.uk/Module.aspx?ModuleNo=44736 I have one of these and it does the job fine for me. They've got a few variations on this sort of thing if this isn't exactly right.

Andi