My friend that is an EE and Ham Radio guy connects his laptop directly to his
car, however, it only works when the car is running.
Using a small inverter or the 12-19V computer adapters, the limiting factor is
the cigar lighter plug and associated wiring. The wiring is usually too small
and or too long and the sockets develop resistance. If you are connecting a
small inverter, I suggest that you hard wire it with #10 wire AND A 30A
AUTOMOTIVE FUSE!!. When the laptop battery is down AND you want to RUN the
computer, the load is great, over 100 watts. Then the inverters or 12-19V
adapters begin to have alarm conditions and shut down, the larger hard wiring
helps greatly.
The original Targus brand 12-19V gadget I had was not reliable. It would not
run the laptop when the internal battery was down and developed plug/connector
trouble and eventually died..
Lee Haefele
----- Original Message -----
From: Philip & Marilyn
To: [email protected]
Sent: Saturday, June 28, 2008 9:54 AM
Subject: [Liveaboard] 12v computer
Does any one run their laptop directly from the house mains? The output from
my power brick says 17 volts, but the internal battery supplies 14.4 which most
likely drops to less than 13.8 when under load - so nominal ~13v dc aught to
run it. Question is where to make the connection. Just plug into the power
inlet in the back like the brick does?
Any problems with this hook--up?
Thanks
Philip
"Be the change you want to see"
Philip & Marilyn Lange
AE4OV & KD4JRC,
ORYOKI
Witness 35 Catamaran
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