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Will that damage my device?

Discussion in 'General Electronics Discussion' started by sydcal2011, Jul 26, 2012.

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  1. sydcal2011


    Apr 23, 2012
    Hello all:

    I have a device whose rating is 3V 0.5A. Is it ok to use a Power supply whose rating is 3V 1A to charge that?

  2. john monks

    john monks

    Mar 9, 2012
    If you have a device that requires 3 volts at 0.5 amps it is quite ok to use a power supply that puts out 3 volts up to 1 amp.
    Exactly what do you have in mind?
  3. Harald Kapp

    Harald Kapp Moderator Moderator

    Nov 17, 2011
    This is a common misconception:
    The power rating or amperage of the power supply only tells what it is capable to deliver. In this case: any current from 0 A up to 1 A.
    It does not mean that the power supply forces a current of 1 A into the load.
    As long as the load requires less cúrrent than the supply is able to deliver and the nominal voltages of load and supply are the same, everything is fine.

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