Help In Explaining Circuit

Discussion in 'General Electronics Chat' started by cgha20@yahoo.com, Mar 17, 2010.

  1. cgha20@yahoo.com

    Thread Starter Active Member

    Oct 21, 2009
    61
    0
    I really need an explanation of this circuit. i need to understand what is going on and how the 2.5 voltage is turning into 5V output. The output is the disconnected wire. Please help. Thanks.
     
  2. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    The circuit does not make sense with transistor U2 shown connected upside down.
    The opamp with or without U1 and U2 would have a voltage gain of 2 (1+[R3/R4]).
     
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