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  1. #14
    Join Date
    Sep 2009
    Location
    Arnold mo
    Posts
    3,976
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    Quote Originally Posted by NCHeat View Post
    Someone explain this to me. How can a cell phone charger plugged in with no phone connected to itbe drawing power? What is pulling amps on that circuit?
    I would imagine it has to do with the fact that the charger is converting ac to dc;perhaps energy loss from the energy being coverted into heat.
    An answer without a question is meaningless.
    Information without understanding is useless.
    You can lead a horse to water............
    http://www.mohomeenergyaudits.com

  2. #15
    Join Date
    May 2000
    Location
    Rochester, NY, USA
    Posts
    15,726
    Post Likes
    I asked a "tech" guy once why a x-former hums.

    I was told that it could be out of Phase?

    you can get the technical info here

    http://www.allaboutcircuits.com/vol_2/chpt_9/4.html

    or you probably could just change it out and see if that quiet's it down
    Dear American citizen

    Please stop asking "How stupid can these politicians get"

    Democrats seem to be taking this as a challenge

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