plz help in TL084 (Design Fn Genrator 3 stage ) on proteus

Discussion in 'The Projects Forum' started by mahmoudm36, May 9, 2015.

  1. mahmoudm36

    Thread Starter New Member

    May 9, 2015
    3
    0
    [​IMG]

    hi guys i need some help in this design there no out put on oscliscope
    and this is the desgin for 5 stage
    [​IMG]
    i made 3 only and some thing is wrong but i don't know what


    what is the wrong in my desgin ??
     
  2. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,398
    497
    Normal people start looking at one stage at a time. So... Does Stage 1 work?
     
  3. mahmoudm36

    Thread Starter New Member

    May 9, 2015
    3
    0
    no :(
    And proteus does not tell me error in connection
     
  4. mahmoudm36

    Thread Starter New Member

    May 9, 2015
    3
    0
    +ve 12 and - ve 12 on all op-amp is right or n't ?
     
  5. Reloadron

    Active Member

    Jan 15, 2015
    967
    235
    I don't understand those 12 volt power supplies and no they do not look correct. You have 12 volt batteries strung across the ICs and no power supply reference to ground.

    Pos Neg Pwr.png

    While I don't use Proteus I would try something like the above for +/- 12 Volts.

    Ron
     
  6. DickCappels

    Moderator

    Aug 21, 2008
    2,664
    634
    To elaborate on what Reloadron said, your circuit is trying to source and sink current through loads connected to ground but the power supply is not grounded.
     
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