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8 x D Cell Batteries or 12 V from AC Adapter (Universal Power Supply)

Discussion in 'Power Electronics' started by webmanoffesto, Feb 5, 2013.

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  1. webmanoffesto


    Feb 5, 2013
    Science experiment: Is it safe to use an AC Adapter set to put out 12V instead of 8 D cell batteries assembled in a series?

    I’m doing a science experiment “How to Make a Light Bulb”

    All the plans I see for this experiment call for 8 D cell batteries (assembled in a series so they put out 12 V). Where I live that is very expensive. But I have a AC Adapter (Universal Power Supply) which can put out 12 V.

    Is it safe use my AC Adapter instead of the 8 D cell batteries? I’m a total beginner and I want to make sure I don’t blow all the fuses in my building.
  2. davenn

    davenn Moderator

    Sep 5, 2009
    hi there
    welcome to the forums :)

    yup no problem there, the plugpack output just needs to be 12V DC and probably ~ 500mA ( 0.5 Amp)

  3. webmanoffesto


    Feb 5, 2013

    Thanks for the quick response.
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