Variable AC input, constant output DC

Discussion in 'General Electronics Chat' started by Suthaker, Nov 7, 2004.

  1. Suthaker

    Thread Starter New Member

    Nov 7, 2004
    1
    0
    Fellow members

    I guess this is hello.

    I'm working on a project to build a variable input (220/120), 12VDC power supply. Something similar to the supplys in say a shaver. I'm looking for a good circuit diagram to base my design on.

    I would appreciate if someone could help me with such a request.

    I do not wish to use any manual intervention to alternate between 220 VAC and 120 VAC. The circuit should adapt to the input and provide the correct supply.

    Thanks
     
  2. mozikluv

    AAC Fanatic!

    Jan 22, 2004
    1,437
    1
    hi

    will this circuit fit your purpose?
     
  3. bodhisatva

    Member

    May 20, 2004
    23
    0
    Hello,
    You have to specify also the maximum current at the output.
    There are many tested circuits for 85-275 AC to 12V DC.
    I mean DC-DC converters with Tiny Switch and TOP Switch of Power Integrations.

    Take a look at their web page
    www.powerint.com

    Regards
     
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