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Thread: Power supplies, some basic questions

  1. #1
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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. #2
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    Anyone??

  3. #3
    Variable Bitrate billmee's Avatar
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    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.

  4. #4
    Neither darque nor pervert DarquePervert's Avatar
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    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.

  5. #5
    Variable Bitrate cherrybomb's Avatar
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    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
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  6. #6
    Variable Bitrate Phatsacks's Avatar
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    I'm guessing he is referring to a Dell Optiplex Sx260

    I believe they use power bricks like laptops.

  7. #7
    Variable Bitrate cherrybomb's Avatar
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    Quote 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.

  8. #8
    Variable Bitrate cherrybomb's Avatar
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    '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.

  9. #9
    Fusion Brain Creator 2k1Toaster's Avatar
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    Quote 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

  10. #10
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    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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