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12VDC to 18VDC

Discussion in 'Electronic Basics' started by Newfdog, Apr 14, 2006.

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  1. Newfdog

    Newfdog Guest

    Does this still require a conversion to ac, up the voltage and then
    reconversion to dc? I would like to be able to use my motorcycle battery
    to power my laptop. Can someone point me to a schematic to accomplish this?

    thanks
    Newfdog
     
  2. Gareth

    Gareth Guest

    National Semiconductor have a handy online tool to help you use their ICs

    http://www.national.com/appinfo/power/

    --
     
  3. John

    John Guest

    Sounds like a generic 12 volt input laptop power supply would work.
    Check Ebay.
     
  4. Chris

    Chris Guest

    Hi, Newfdog. Conversion to AC and back to DC isn't required, nor is it
    the most efficient way of doing things, but it will probably be the
    easiest. Also, a canned store-bought solution is probably the safest
    for your computer.

    How about getting an automotive inverter rated for at least twice the
    wattage of your AC adapter? It's pretty much mistake-proof. I'd get
    an inverter rated for at least 100 watts for a standard laptop. Then
    you can just plug your desktop adapter into the inverter, and you're
    good to go.

    Good luck
    Chris
     
  5. Is this to use as a connection to your bike? The 12 volt input to the
    laptop may work fine. Just be absolute sure about the polarity before
    connecting it.. JTT
     
  6. Newfdog

    Newfdog Guest

    Thanks for all the replies guys. Looking for something cheap :).
    Inverters are over $100 in this neck of the woods. I am going to try and
    put something together.

    Newfdog
     
  7. I just picked up a xantrex 400W one on sale for $9.99. Amazon has
    them for about triple that. But not as high as $100.

    Jon
     
  8. Chris

    Chris Guest

    Hi. Look at this:

    http://www.harborfreight.com

    Part Number 47639-4VGA
    Chicago Electric 175W/350W MODIFIED SINEWAVE POWER INVERTER
    $14.99 USD plus shipping and handling.

    Good luck
    Chris
     
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