There is no Laptop facility in my car only a 12v spare lead. I was wondering
if someone knows a reasonably simple way to up this to 19v
Since it is a laptop, it's likely that it draws a fair amount of
current. Normally, you pretty much buy a car adapter from the
laptop company or one of their dealers. It's not worth risking
your laptop, as a rule, with borrowing a design from some other
purpose or doing your own unless you are pretty adept at this.
One shop in the UK is:
http://www.laptop-shop.co.uk/laptop-notebook-car-cord/spscarcord.htm
Just found it from google, so no idea if they are a good place
to shop. You should be able to find a great many of these shops
through google, using searches such as
car adapter laptop|laptops
for example. Also, you might add in keywords like
'schematic|schematics' or 'dc' or 'dc-dc' or 'homebuilt' into
the list to refine it for usable schematics.
as I have a friend
who can wire things up (without to many bangs).
I should be doing more favors for friends like you, Mel!
Who knows? My wife might even approve.
Best of luck,
Jon