Announcement

Collapse
No announcement yet.

carputer with both DC-DC and AC-DC

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • carputer with both DC-DC and AC-DC

    How would I hook up both DC-DC and a AC-DC ATX power supplies to my bookPC. Reason for this is that I will leave the DC-DC outside the carputer and leave the AC-DC so I can plug it in my friend's house or whatever.... (partybox). Of course I will never power it up from BOTH PSU's...hehe just in case people are wondering.

    If I make a Y adaptor would that screw up the other power supply when I power it up??

    ATX 120VAC-DC
    |
    |
    |-------------- outputs to mobo / HD/CD ROM
    |
    |
    ATX 12V DC-DC

    I recall I saw a website that someone had done this but I can't seem to find it... does anyone know or can help?
    04 Acura TL w/ core2duo 2ghz laptop w/ 1gb RAM on a docking station.

    Fast car, fast PC. ;)

    http://www.arcdesigns.net/carpc/

    My TL CarPC ver2

    FSR Flash Skin w/ moving weather maps

  • #2
    My knee-jerk response would be to build a switchbox.
    ~m
    PII 266, 512 MB RAM, 10 Gig, 36x CD-ROM, 16x DVD, DeLorme GPS, 5.6" LCD Screen, Dschmidt power controller, Keypower ATX DC-DC Supply, PowerAmp Macro controller, Dauphin mini-Kbd.
    Sony Head Unit, Sony Unilink input selector, rear deck Kenwood 6x9's, stock door spkrs... All in my '96 Civic, of course :}
    BC ROCKS!!!

    Comment


    • #3
      What your going to want to do is build the thing up just with a DC-DC power supply and power the thing in a house by using a AC-DC converter. You DO NOT want to wire the outputs of both supplies together. It would be bad.

      See if you can find something along these lines:
      supply

      That way you can leave the book pc alone as a DC-DC box and power it with 12 volts when you are in the house..


      You might be able to find one that is in a case so you don't have the open frame issue..
      But this is what I think you should do..

      Jeff_
      MPEGBOX - Plexiglass Computer
      www.mpegbox.com

      Comment


      • #4
        Here ya go..
        MPEGBOX - Plexiglass Computer
        www.mpegbox.com

        Comment


        • #5
          hmm i had seen a setup with someone using both ac-dc and dc-dc but I can't remember where...anyone remember???? I was just curious how the guy did it.

          thanks for the info Jeff. BTW. I want that PSU of yours are you getting my emails?
          04 Acura TL w/ core2duo 2ghz laptop w/ 1gb RAM on a docking station.

          Fast car, fast PC. ;)

          http://www.arcdesigns.net/carpc/

          My TL CarPC ver2

          FSR Flash Skin w/ moving weather maps

          Comment


          • #6
            You could have two power supplies built in to the player with two power sockets on the back, one for 12vDC and one for 120vAC. And then have a switch to switch between which power supply is supplying the low voltages.

            I was going to do this, but the switchmode I was going to use for the mains power is DEAD...

            It WOULD have been good..
            This is the switchmode I was going to use...Oatleyelectronics

            Comment


            • #7
              Heh, what I actually did while I was working on installing my system, to power my GPS and LCD which were wired to the cigarette lighter system.. (computer still had ac-dc PS so I just plugged that in).

              Was I wired a 12V AC-DC basic wall PS, the kind of comes with most consumer devices, to a male cigarette lighter plug. Already had my battery disconnected as I was working on stuff.. pulled the cigarette lighter fuse just to be safe, and plugged it in.

              Everything powered up great.
              Player: Celeron II 633MHz, 256MB RAM, 20GB IBM 9mm 2.5" Laptop HD (180G/2ms), onboard ethernet/sound/video/tvout, 10"11"x3" case, MPBS1 70W DC-DC PS w/auto-shutdown controller, in-dash lighted switches, 7" NTSC TFT widescreen in-dash LCD, touchscreen, rear-window brake light installed Garmin GPS35 GPS, credit card sized IR remote w/IRMan, mini-wireless keyboard/mouse (sits under seat), PowerMate black knob, MP3s and GPS Navigation (Winamp, CoPilot, SA8.0).
              Car: 1993 Nissan Maxima, Black Emerald

              Comment


              • #8
                Or you could just use an old AT-power-supply
                Will give you more than enough to power the DC-DC supply

                Greetz
                Raas - The Netherlands
                ME: VIA epia m10000, lilliput 7', opus 150w, 80gb<br>
                GF: IBM Thinkpad 380, ext. 3.5 80gb, 40x4, PB-IR

                Comment


                • #9
                  Agreed with Raas, that is what i do when i us my box for parties, but then again, i c where moahdib is going with his. I thought about doing this when i first started out, but never had time to execute on it. Anyway, i might try something this summer to c if it can be done, yes, you will need some sort of a switch board.
                  abcd-1
                  Author of CobraI,II,III and now CobraIV.
                  You can contact me on AOL instant messenger....nick is cenwesi or cenwesi3

                  Comment


                  • #10
                    Probably the best idea would be to just power your DC-DC with an AC operated 12V PS when you are not in the car. An old AT power supply can be used for this. I do all the time when I need to test my player, mess with it inside, etc.
                    Player: Pentium 166MMX, Amptron 598LMR MB w/onboard Sound, Video, LAN, 10.2 Gig Fujitsu Laptop HD, Arise 865 DC-DC Converter, Lexan Case, Custom Software w/Voice Interface, MS Access Based Playlists
                    Car: 1986 Mazda RX-7 Turbo (highly modded), 1978 RX-7 Beater (Dead, parting out), 2001 Honda Insight
                    "If one more body-kitted, cut-spring-lowered, farty-exhausted Civic revs on me at an intersection, I swear I'm going to get out of my car and cram their ridiculous double-decker aluminium wing firmly up their rump."

                    Comment


                    • #11
                      It all depends on what your power supply is, some peoples, Aaron, only require 8 volts, but others may need over 12....

                      Comment


                      • #12
                        So use an adjustable DC power supply. Simple and cheap to make (have like 3 different versions on my site). That way, you can adjust it all the way to 30V or so (if you want to blow something up). A PC power supply will work with most commercial DC-DC units.
                        Player: Pentium 166MMX, Amptron 598LMR MB w/onboard Sound, Video, LAN, 10.2 Gig Fujitsu Laptop HD, Arise 865 DC-DC Converter, Lexan Case, Custom Software w/Voice Interface, MS Access Based Playlists
                        Car: 1986 Mazda RX-7 Turbo (highly modded), 1978 RX-7 Beater (Dead, parting out), 2001 Honda Insight
                        "If one more body-kitted, cut-spring-lowered, farty-exhausted Civic revs on me at an intersection, I swear I'm going to get out of my car and cram their ridiculous double-decker aluminium wing firmly up their rump."

                        Comment


                        • #13
                          Well, if you use a 7812 regulator, and a transistor, for your 12volts, you will need at least 15volts...
                          :P
                          :P
                          :P
                          :P
                          :P

                          Comment


                          • #14
                            Originally posted by Jeff Mucha:
                            <STRONG>Here ya go..</STRONG>
                            Wow, that's a good price. I was looking to build/buy one of these a while ago, and I couldn't even find the transformer for that price (so I just put up with unplugging my DC2DC and pluggin in a desktop supply).


                            Rob
                            Old Systems retired due to new car
                            New system at design/prototype stage on BeagleBoard.

                            Comment


                            • #15
                              Umm if i recall, i have one of those suckers underneath my desk here. Mine is Pyramid model ps-9kx....output 13.8V DC, 5amp constant 7amp surge. Last time (1yr ago) i tried it, i couldn't use it to power up my Arise ace-865v. Maybe i did something wrong back then but it just didn't power up my psu. I use regular PC PSU right now with a bad HD hooked up to power up my box. I will try this again and c what happens. Aaron, maybe u can help me rig up something to allow me to use this sucker, i payed like $49 for it if i recall and it is just collection dust here
                              abcd-1
                              Author of CobraI,II,III and now CobraIV.
                              You can contact me on AOL instant messenger....nick is cenwesi or cenwesi3

                              Comment

                              Working...
                              X