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Get off my lawn!
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12 volt input computer power supply
I may be looking for something that does not exist, but I can't imagine I am the only one that wants one.
I want to build a computer that runs on a 12 volt power source. I am looking for a way to build a small box powerful computer that runs Win 10 Professional. The software I need to run requires Win 10. It will be a i7 8700 CPU and lots of RAM and a SSD. It just seems crazy to uses a conventional power supply that is 110 volts, and a power inverter to take the 12 volts system up to 110, just to convert it back to 12 volts. Who makes a power supply that has the connections to run a ATX motherboard with a SSD drive? Any suggestions?
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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10-11-2017, 07:58 AM
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Registered
Join Date: May 2003
Location: Woodlands TX
Posts: 3,942
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SO you have 12v nominal and you need 12v regulated for the computer? DO you need any other voltages like 5 v?
There are plenty of "dc-dc converter" modules that will do this on the cheap. a 12v nominal batt should be consistently over 12v so a simple linear regulator could work as well. How much current/power do you need.
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84 930 07 Exige S |
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10-11-2017, 08:13 AM
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Too big to fail
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Why not just get a high-end laptop and a an automotive adapter?
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"You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs |
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10-11-2017, 08:17 AM
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Get off my lawn!
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To answer both questions, yes, we have a 12 volts power supply like a car system.
A high end laptop is expensive, and still does not avoid the issue of 12 volts up to 110 then back to 12. And yea, I need the 5 volts. I want to connect it to a ATX computer motherboard. I can build a custom computer a LOT cheaper than a high end laptop, and if I need to upgrade or add to it, that is easy. A laptop does nothing except make it hard to configure, and spend a lot of cash.
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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10-11-2017, 08:23 AM
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The Unsettler
Join Date: Dec 2002
Location: Lantanna TX
Posts: 23,885
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Quote:
You really want to wire all the PC's internal components that are normally feed direct from the PSU to another PSU? Hide something like this under the seat and be done with it. 
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"I want my two dollars" "Goodbye and thanks for the fish" "Proud Member and Supporter of the YWL" "Brandon Won" |
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10-11-2017, 08:31 AM
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Get off my lawn!
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Yea, that would work, but it sure takes up a lot of room, and once again it goes in circles of 12 to 110 to 12 volts.
I want to put it in a non conventional area. I can get a ATX motherboard, a CPU and memory anywhere. Fairly cheap. Why go through multiple transformers changing the voltage?
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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10-11-2017, 08:37 AM
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You do not have permissi
Join Date: Aug 2001
Location: midwest
Posts: 39,848
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Do motherboards run on 12v?
If so, just bypass the PSU and make direct connections I'd guess, with surge filter. Don't some components run on 5v instead? You'd still need a step-down box to run power wires to those. |
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10-11-2017, 09:16 AM
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The Unsettler
Join Date: Dec 2002
Location: Lantanna TX
Posts: 23,885
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ATX standard pin out from PSU to MB. There is, IMHO, no benefit to eliminating the 12V->110->12V cycle. Lotta work for I'm not sure why. 
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"I want my two dollars" "Goodbye and thanks for the fish" "Proud Member and Supporter of the YWL" "Brandon Won" |
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10-11-2017, 09:24 AM
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Registered
Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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you don't need to build the computer, you just need to build the power supply.
the computer is already done.
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86 930 94kmiles [_  _] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ _] RUNNING: [__] NOT RUNNING:01 suburban 330K:: [_ _] RUNNING: [__] NOT RUNNING:RACE CAR:: sold |
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10-11-2017, 09:25 AM
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Get off my lawn!
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I don't want to have to play electrical engineer. I just figured someone already made a computer power supply with a 12 volt input that replaced a conventional power supply with a 110 volt input. Yea, it is easy to just get a power inverter and just plug in a conventional power supply. I just assumed someone made a computer power supply designed to have a 12 volt input to avoid all the conversions. Why waste all that power heating up multiple transformers?
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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10-11-2017, 09:40 AM
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The Unsettler
Join Date: Dec 2002
Location: Lantanna TX
Posts: 23,885
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Quote:
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"I want my two dollars" "Goodbye and thanks for the fish" "Proud Member and Supporter of the YWL" "Brandon Won" |
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10-11-2017, 09:42 AM
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Get off my lawn!
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Quote:
I will see what systems they have. May well get an entire computer setup from them. Now I gotta go shopping! Thanks!
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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10-11-2017, 09:59 AM
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Carrera
