Yes, this is what I finally decided to do - seems by far the most elegant
solution (though I did appreciate Lynn Coffelt's advice to try soaking the
AC-DC brick in sea water for 72 hours). I've ordered a DC to DC airplane
and automobile converter from Linde afdter following the link previously
suggested by "Johnhh"
http://lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/aaa/x/dbx_gen_aaa_mfgs/.
Not cheap but said to have good RF filtering to comply with airplane
regulations. Hope it works as advertised and will report back after I get
and try it.
Thanks.
Scott


"nollaigoc" wrote in message
oups.com...
I have a 12v to 19v car laptop adaptor,(DC to DC) which was shop bought
for Eur40, (made in China). It turns ship's 12volt supply into a
selectable voltage to suit a range of laptops. As it is onboard and I
am not, I can't give precise detail now, but do a Google search for
"Car laptop adaptor" and it will link to suppliers.
This is more efficient as it saves energy by not having to use an
inverter to go 12v to 115/230v to power the laptop's power brick. A
win-win situation as it saves the inverter losses in addition to
removal of another noise souce.
Nol