Here is a link to a DC to DC converter for computers
.. Input range 10-19V DC
.. Output Voltage 12V DC
.. Output power 72 Watts max
99 £
go to the bottom of the page.
http://mini-itx.com/store/?c=19#psu
If you know any others (cheaper), please let me know.
"johnh" skrev i en meddelelse
news:GsNcb.586152$uu5.96077@sccrnsc04...
There are several available that will output a true 12v.
I don't have my list right now, but one of the itx powersupply companies
has
a cigarette lighter one that outputs about 50w for about $50. Radioshack
has one for about $80 that outputs a selectable voltage range that goes to
12 v. I have used this one with an itx board and powersupply.
There are also several industrial strength ones in the $250 to $500 range.
Let me know if you can't find them and I'll dig out a list.
John
"Glenn Ashmore" wrote in message
...
These little DC-DC powersupplies are used pretty regularly in automotive
and truck installations so they must be aboe to survive 13V + a little
but I doubt they would handle a bulk charging high amp marine alternator
at 14V. They might make it OK with a high end regulator with a halogen
light limiter but that will increase charging time.
THere are some DC-DC converters that tollerate 10 to 15V but the stock
ones are intended to outpur a stable 13.8 to 22V. I have not found any
designed to output in the range for these ITX power supplies.
hanz wrote:
most dc-dc converter run at 12v+- 5%. 5% is the the most
important
since boat battery run anywhere from 9v to 14.3 volts (5% of 12 is
11.4
to 12.6.. check it out
hanz
Conor Crowley wrote:
So by the looks of the mini-ITX systems on this site, I should be
able
to build something that looks good, and runs directly off of 12v
using
the "Cubid silent 12V DC-DC Converter Kit " (
http://www.big008.com/ProPage.asp?ProID=PI160300 ) - correct?
One that I know of is at
http://www.big008.com/catPage.asp?catid=CI01250000
. However it is only 55watt, designed for the low power end of the
mini-ATX
form factor. If you find one suitable for ATX, let us know!
--
Glenn Ashmore
I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com