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SWPS used at 110v instead of 230v Question??

Discussion in 'Electronic Basics' started by Charger, Aug 6, 2005.

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  1. Charger

    Charger Guest

    I have 4 mobile phones and chargers, all different manufacturers.
    (Sony, Siemens, Nokia, Motorola)

    All apart from one (Sony Ericcsson) have labels stating 230v use only,
    one states 110v-240v.

    All seem to be made by Astec of China

    All 4 give an indication on the phone that enough voltage is being
    supplied to charge the phone when used at 110v, plugged into my bathroom
    110v shaver socket.

    Is it just a label thing, in fact are all these chargers capable of
    being used on 110v, in America, without the need to buy a specific 110v
    travel charger ?

    As I understand it, they may be switched mode power supplies, the
    technology I know very little about.

    Does it do any harm to operate these chargers on 110v, instead of the
    labelled 230v ?

    How do I tell if it's switched mode from the outside, or if I open it up
  2. Charger

    Charger Guest

    SWPS used at 110v instead of 230v Question??


    Should read

    SMPS used at 110v instead of 230v Question??

    Reposted with correct header, ignore this one !!
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