AC-AC Wall Adapter question

Discussion in 'General Electronics Chat' started by nDever, Oct 3, 2011.

  1. nDever

    Thread Starter Active Member

    Jan 13, 2011
    154
    4
    Hey guys,

    I have a device that requires 9VDC @2A and the jack is center (+). The adapter that was included with it shorted out. I ordered a supposed "replacement" adapter and when it arrived, the electrical requirements were correct but the plug does not fit the jack in the device (it was too large).

    Today, I found an AC to AC adapter and the plug does fit the jack. If I cut the plug portion from the AC-AC adapter and attach it to the AC-DC adapter, would the device work?
     
  2. #12

    Expert

    Nov 30, 2010
    16,277
    6,788
    Yes, as long as you get the polarity right.
     
  3. iONic

    AAC Fanatic!

    Nov 16, 2007
    1,420
    68
    Dito!

    Hopefully you can figure out what the polarity should be...
     
  4. tom66

    Senior Member

    May 9, 2009
    2,613
    214
    Not necessarily! The widget could be generating a split supply. In which case DC would *not* work (only one supply would be generated.)
     
  5. #12

    Expert

    Nov 30, 2010
    16,277
    6,788
    I don't know where you got the idea that "9VDC" and "center positive" means there are 3 wires to the connector.
     
  6. tom66

    Senior Member

    May 9, 2009
    2,613
    214
    My error.

    I thought he was intending to replace a 9VDC adapter with a 9VAC adapter. That would probably result in smoke.

    But now I read it, I see he meant he was just cutting off the plug. :rolleyes:
     
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