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Power supplies, some basic questions

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  • Power supplies, some basic questions

    Hi i am looking at putting a sx260 in my car and have been reading up on a variety of ways to power it. Some use a requlator and some use a PSU can some one tell me the difference between these and when would you use one over the other.

    Thanks

    Rich

  • #2
    Anyone??

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    • #3
      I do not know what an sx260 is but generally speaking a regulator regulates a higher voltage to a stable output. Example 15v to 12v.

      A psu ( I think you mean a DC-DC ) can deliver a stable output over a range of voltages. Example 9-15v to 12v. This is important in a car since the battery can run as low as 9 v during starting and the alternator will supply 13-14 volts while driving.

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      • #4
        A regulator does just what the name implies: It regulates the 12v power from your car's electrical system (which fluctuates during normal operation).

        A PSU is more what you'd use when building a desktop. It's ATX compliant and connects the same way.

        Other people may have different definitions, mind you. That's how I view it.
        Have you looked in the FAQ yet?
        How about the Wiki?



        Under normal circumstances, a signature would go here.

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        • #5
          I'm also not sure what an sx260 is. But, there is a wealth of information on this topic both in the forums, and in the mp3car.com wiki.

          Probably all the information you'll ever need is right here.
          '99 Ford Explorer Eddie Bauer
          CarPC Progress ~= 97%. Everything is installed, and operational. Still need to tweak and tune, and do some "finish" fabrication.
          CarPC Project Web Site

          SpaceNavigatorDriver SourceForge Project

          Check out my blog.

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          • #6
            I'm guessing he is referring to a Dell Optiplex Sx260

            I believe they use power bricks like laptops.

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            • #7
              Originally posted by Phatsacks View Post
              I'm guessing he is referring to a Dell Optiplex Sx260

              I believe they use power bricks like laptops.
              Ahhh... That would make sense.

              In that case that link isn't of much use.

              He'll need a DC-DC Power Supply which takes 9-18ish volts, and always outputs the voltage required by the laptop, and with enough amperage to keep it going.

              I had a laptop I wanted to run in a car that actually required 19v at some ridiculous amperage. Most laptops are 12v or below though, so it should be reasonable to find an appropriate power supply.
              '99 Ford Explorer Eddie Bauer
              CarPC Progress ~= 97%. Everything is installed, and operational. Still need to tweak and tune, and do some "finish" fabrication.
              CarPC Project Web Site

              SpaceNavigatorDriver SourceForge Project

              Check out my blog.

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              • #8
                http://www.mp3car.com/vbulletin/powe...-solution.html
                '99 Ford Explorer Eddie Bauer
                CarPC Progress ~= 97%. Everything is installed, and operational. Still need to tweak and tune, and do some "finish" fabrication.
                CarPC Project Web Site

                SpaceNavigatorDriver SourceForge Project

                Check out my blog.

                Comment


                • #9
                  Originally posted by cherrybomb View Post
                  I had a laptop I wanted to run in a car that actually required 19v at some ridiculous amperage. Most laptops are 12v or below though, so it should be reasonable to find an appropriate power supply.
                  A bit OT, but did that happen to be an Acer? I could never find anything to power that beast. Even the sockets under the seats in an airplane wouldnt give out enough power for me to charge it when on. It would charge if turned off, and would just flicker the screen rapidly if turned on and plugged in...
                  Fusion Brain Version 6 Released!
                  1.9in x 2.9in -- 47mm x 73mm
                  30 Digital Outputs -- Directly drive a relay
                  15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
                  Buy now in the MP3Car.com Store

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                  • #10
                    Sorry, yes i meant a Dell sx260, anyway thanks for your input guys, i think i'll go for a psu, probably the DSX12VD, one other question, the psu in question has a motherboard connector as the output (obviously to plug into the motherboard) (molex i think...), however as someone has mentioned, the sx260 has a external power supply and i will need to use the connector end to plug into the pc, can i just cut off the mboard connector and splice it into the psu cable?

                    Thanks

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                    • #11
                      Originally posted by rev1richie View Post
                      Sorry, yes i meant a Dell sx260, anyway thanks for your input guys, i think i'll go for a psu, probably the DSX12VD, one other question, the psu in question has a motherboard connector as the output (obviously to plug into the motherboard) (molex i think...), however as someone has mentioned, the sx260 has a external power supply and i will need to use the connector end to plug into the pc, can i just cut off the mboard connector and splice it into the psu cable?

                      Thanks
                      Yes that is correct. Just make sure you use the correct polarity, and the correct PSU that will deliver the right voltage at the right amperage.
                      Fusion Brain Version 6 Released!
                      1.9in x 2.9in -- 47mm x 73mm
                      30 Digital Outputs -- Directly drive a relay
                      15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
                      Buy now in the MP3Car.com Store

                      Comment


                      • #12
                        Originally posted by 2k1Toaster View Post
                        A bit OT, but did that happen to be an Acer? I could never find anything to power that beast. Even the sockets under the seats in an airplane wouldnt give out enough power for me to charge it when on. It would charge if turned off, and would just flicker the screen rapidly if turned on and plugged in...
                        It was some "No Name" rebranded unit I'd bought on Ebay. It was clearly specified as a "Desktop Replacement" so I wasn't too surprised that it needed so much power, but it sure was inconvenient!

                        Coulda been an Acer for all I know.
                        '99 Ford Explorer Eddie Bauer
                        CarPC Progress ~= 97%. Everything is installed, and operational. Still need to tweak and tune, and do some "finish" fabrication.
                        CarPC Project Web Site

                        SpaceNavigatorDriver SourceForge Project

                        Check out my blog.

                        Comment

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