Well it all depend what power supply is going to be use for,
However you saying that you would like hook up GPS to
your house source yes that is not problem but you have not
stated what power does your GPS takes my takes 5 vdc
and yes you can use 6 vdc source but I would not go any
higher even so I had mine hook up for while on 9 vdc it seemed
it survived one time but I would not do it again.
Keep in you mine that most of batteries need at list 10-20% more
voltage to take charge and to stored that power.


"TedVerizon" wrote in message
...
I would appreciate some basic info about using a 12VDC "wall wart" to
power or charge a device using a car cig lighter attachment.

In other words, I'd like to take the power cord that normally plugs
into a car cigarette lighter power source and connect it to a power
supply I plug into a wall outlet.

I know a little about electricity so I know the amp rating of the
power block must be sufficient. I can figure out the correct polarity.

What I AM confused about is why I plug a 12VDC power brick in and
measure it with my tester to find they read about 15 or 16 VDC with no
load. I know cars supply about 12V when off and perhaps 13-14V when
running. I do NOT want to damage anything and am concerned that 16V
is too high unless this is normal and it will be less when it is
actually powering something.

Any comments or things to watch out for would be appreciated. I was
thinking of charging my GPS for which I do not have a house charger
for and things like that.

Thanks very much!





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