rfid tag

Discussion in 'The Projects Forum' started by pooja, Apr 11, 2009.

  1. pooja

    Thread Starter New Member

    Apr 10, 2009
    3
    0
    i want to know in this circuit diagram that how these capacitors form voltage divider...

    thnkzz alott

    I am unable to understand this circuit diagram can anyone plz explain me this circuit diagram......what is the use of transistor in this circuit
     
    Last edited by a moderator: Apr 12, 2009
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,347
    Hello,

    I think the capacitors will make a charge pump to create a negative voltage for the RS232.
    The IC is maybe a MAX232.

    [​IMG]


    Greetings,
    Bertus

    PS pictures can be best attached as PNG.
     
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