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Planning Wiring a Device with battery to PC Molex

Discussion in 'Modding' started by TheGreatSatan, 5 Dec 2014.

  1. TheGreatSatan

    TheGreatSatan Member for 17 years!

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    I have an item that uses two AA's, but I'd rather run it into a molex. How do I do that?
     
    TheGreatSatan, 5 Dec 2014
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  2. ALS

    ALS Minimodder

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    LM7803 or 78L03

    [​IMG]
     
    ALS, 5 Dec 2014
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  3. theshadow2001

    theshadow2001 [DELETE] means [DELETE]

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    you need to determine if the device uses the AA batteries in series or in parallel. This determines the operational voltage of the device.

    Once you've done that you use either a voltage divider, a zener diode or a voltage regulator between the molex and the device to step down the 12v or 5v line to the required voltage.

    It may be possible to do it with a single resistor. I'm not sure how to calculate the value without further research.
     
    theshadow2001, 5 Dec 2014
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