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car lighter power supply question

Discussion in 'Misc Electronics' started by rcrigger, Dec 2, 2004.

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  1. rcrigger

    rcrigger Guest

    Can you use a positive plug 4.5v 600mA power adaptor in a device
    that calls for a positive plug 4.5v 300mA adaptor without harming the
    device? They are both produced by the same company, the only difference
    is the mA rating.
     
  2. Art

    Art Guest

    Yes
     
  3. Rich Webb

    Rich Webb Guest

    Maybe.

    Some power adapters are very loosely regulated (e.g., not "stiff") and
    only produce their rated output voltage when at or near their rated
    load. It's possible that the 600 mA adapter will run well above 4.5 V if
    it's only loaded to, say, 200 mA.
     
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