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12 volt power supply?

D

David

Jan 1, 1970
0
If you have a design, I would really like to see it.

I am trying to get a design for a 12 volt DC to 12 volt DC regulated power
supply. The design is to provide 12 volts DC + or - 5% output from an input
of between 8 volts and 16 volts DC.
The purpose of this is to run a computer in a sail boat. The battery voltage
in the boat may vary from 8 volts to 16 volts when it is charging.

I currently have an ATX computer power supply that runs off 12 volts DC, it
provides 3 and 5 volts nicely, but the 12 volt rail is actually the input
voltage. So, when the input is 12 volts all is well, if it goes high, well
that could be a real problem, and if it goes low, the computer will shut
down. If you can help it would be much appreciated
 
J

Jim Besse

Jan 1, 1970
0
David, I'm using an American Power Design DC-DC Converter to supply
12VDC at a LCD. Not quite as satisfying as building one but it does
work fine. What brand of 12VDC ATX power supply are you using and
where did you find it?
 
G

Glenn Ashmore

Jan 1, 1970
0
Here is an off the shelf 270W PS that I am going to use to feed a
regulated 12VDC bus in the nav station:
http://www.powerstream.com/Produz10.htm

If you really want to DIY check out
http://www.powerdesigners.com/InfoWeb/design_center/articles/DC-DC/converter.shtm
If you have a design, I would really like to see it.

I am trying to get a design for a 12 volt DC to 12 volt DC regulated power
supply. The design is to provide 12 volts DC + or - 5% output from an input
of between 8 volts and 16 volts DC.
The purpose of this is to run a computer in a sail boat. The battery voltage
in the boat may vary from 8 volts to 16 volts when it is charging.

I currently have an ATX computer power supply that runs off 12 volts DC, it
provides 3 and 5 volts nicely, but the 12 volt rail is actually the input
voltage. So, when the input is 12 volts all is well, if it goes high, well
that could be a real problem, and if it goes low, the computer will shut
down. If you can help it would be much appreciated

--
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
 
J

johnh

Jan 1, 1970
0
Unfortunately, the Powerstream units output 13.8 v not 12, or do they have
one that I didn't see?

john
 
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