12V PC's

pau1gray

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Joined
8 Oct 2006
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543
Location
Plymouth
www.owlwise.co.uk
12V PC\'s

I know alot of people on here use laptops for navigation, but has anyone found a 12V power supply for a PC.
One option is to use an inverter to give you mains but the mains is only changed into 12V,5V and 3 V inside the PC.
So there must be a 12V power supply on the market?
Regards
Paul
 
Re: 12V PC\'s

They are called auto DC power adaptors. They convert 12V to a range of voltages to suit many laptops, mine does 15 - 22V in steps of a couple of volts. Bought mine at Maplin's. I have run my laptop on it throughout much of this year, although not for navigation. Didn't take the 230 V adaptor so ran on the DC adaptor even when the boat was on mains power.
 
Re: 12V PC\'s

I run this setup on the boat, with excellent results. But beware of the type of converter. Many mini-PSU's have a narrow voltage band (11 - 13 V ). You cannot run these with the engine or battery loader on. Choose one for "mobile" use.
 
Re: 12V PC\'s

So what's actually needed? One of these will directly replace the standard 240v PSU and that's it? If this is the case, yippee.

Otherwise, I saw Evesham are making mini PCs that have an external power supply. I didn't see the voltage, but I guess it'll be DC, thus making it easy to get a transformer that goes from 12v in Maplin.
 
Re: 12V PC\'s

It is indeed a direct replacement. Typically a 11-20V supply side connector, other side plugs into ATX mainboard connector. either directly (connector soldered on the PSU board) or indirectly (separate connector), plus a supply connector for HD and CD, but more often than not, not much more. The selection of PSU type depends on the space you have in the case. Soldered-on ATX connectors can vary 90 degrees, which makes quite a spatial difference . The overall advantage of the setup is silence (no fans), if you choose a mainboard that is not to power-hungry, and ruggedness, if you cushion the regular HD somewhat. The endresult is a PC which is more reliable than a laptop. Urban myth has it that laptop HD's are more rugged, but reality is quite different. The low price of regular HD makes having a carbon-copy HD worthwhile.
IMHO, of course.
 
Re: 12V PC\'s

Yup - I should have said to go for the 11-20v ones, you're right.

FWIW I use a Pack Box case from here with one of the 12v DC PSUs and the heat transfer kit along with a via motherboard to get a completely fanless system. Slap in a laptop hard disk and you've got a lovely system with only the hard disk as the moving part.

Rick
 
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