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MP3 player in car

Discussion in 'Hobby Electronics' started by al, Mar 22, 2007.

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  1. al

    al Guest

    Hi all,

    I have an mp3 player (no name cheapy) that I want to use via the head
    unit in my car.

    I connected the earphone output (2.5mm stereo) to the aux in on the head
    unit ( 2 x RCA's) and it works as it should ie I can control volume,
    bass, treble etc via headunit.

    The mp3 player is battery operated and is charged either by usb port on
    the computer or by a 240v adapter that the supplied usb cable plugs into
    (same cable for computer or charger)

    The 240v charger is marked:-
    Input: AC 100-250V 50/60Hz
    Output: DC 5.0V +/- 0.5V
    DC400mA

    I'd like to be able to power the mp3 using the car's 12v system but I'm
    unsure what input/output charger I need to put between the 12v source
    and the mp3 player?

    I had a look at Jaycar's website but couldn't see anything that sounded
    right.

    Can someone advise me what I need - other than a crash course in
    electronics :)

    Thanks
     
  2. You simply need a 5V MP3 charger for the car, they sell them on eBay:
    http://cgi.ebay.com.au/BLACK-USB-CA...96716559QQcategoryZ129446QQrdZ1QQcmdZViewItem

    Dave.
     
  3. Rick Measham

    Rick Measham Guest

    Unless you *want* to build it yourself, then look at something like the
    firepod: http://www.thinkgeek.com/brain/whereisit.cgi?t=firepod

    Alternately, the iGo is a fantastic product for power conversion. All
    you need is the right tip and you're done. It selects voltage for you.
    I'm not sure what type of plug your MP3 player has on that end .. but
    you may find something in the iGo range:
    http://www.igo.com/searchresults.asp?search_id=7

    Cheers!
    Rick Measham
     
  4. al

    al Guest

  5. jasen

    jasen Guest

    They make cigar lighter plugs with USB shaped power outlets that may work
    for you. jaycar or DSE should hve them.
     
  6. Graeme Gill

    Graeme Gill Guest

    And a heat sink. That's 2.8 watts to get rid of,
    if it actually draws 400ma.

    Graeme Gill.
     
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