Re: Laptop, GPS and power connection in a charter boat?
- From: "Phil Stanton" <philnoxx@xxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 21 Oct 2005 11:07:34 +0100
Have a look at http://www.maplin.co.uk/module.aspx?ModuleNo=36836&doy=21m10
This is a small cigarette lighter input power supply that gives different
output voltages (including 20v that you need)
Get a 2 way cigar splitter. There are 2 sorts, one is an all moulded 1 piece
effort and the other is a plug connected to the twin sockets with a bit of
wire. Although this is untidy, I have found locations where the is not
sufficient room for the one piece adaptor.
You obviously have solved the Garmin to laptop problem.
If you have no charting software, have a look at http://www.digiboat.com.au/
They do a free package although you will have to buy the charts
Phil
"BrianH" <nadia@xxxxxxxx> wrote in message
news:dja62r$69r$1@xxxxxxxxxxxxxxxxxx
> Mike wrote:
>> On Thu, 20 Oct 2005 07:37:44 +0000 (UTC), Mike <no-one@xxxxxxxxxxx>
>> wrote:
>>
>> Thanks for the information.
>>
>> Clarification may assist:
>>
>> I can now see how to solve powering the GPS and feeding the signals to
>> the laptop - with the dual cigarette lighter to GPS and GPS to serial
>> port cable.
>>
>> The problem then becomes how do I power the laptop? The laptop is a
>> Dell Inspiron 5000 about 4 to 5 years old. The power adapter says
>> "Output 20 volts, 3.5 amps" so is an invertor the best way to provide
>> this power? (You'll have to excuse my ignorance of all things
>> electrical here.... I have no idea what an inverter plugs into?)
>>
>> Are there any other things that can safely power the laptop and what
>> do they plug into?
>>
>> Thanks for your help.
> I have a similar Dell Inspiron of about the same vintage and had no joy
> running on board with a commercial 300 watt converter (no name but
> substantial looking with expensive-looking alu heat fins) from the 12 volt
> accessory socket, which emitted a sort of alarm whistle when I plugged the
> notebook in. The Dell insisted on running from its own battery. All other
> appliances such as battery chargers for mobile phone and digital camera
> worked well with this device.
>
> A friend commented that it was something to do with the rectified square
> wave AC produced by the converter that the Dell doesn't like. This seems
> to be borne out now that I have a new boat already equipped with a larger
> (and probably better quality) converter, from which the Dell works
> perfectly.
>
> Moral; don't skimp on the converter, get a good one - or 'scope the output
> to check if the AC is a clipped square wave output before buying, not
> practical, I agree.
>
> Best,
> BrianH.
.
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