bjt in differential amplifier in pspice

Discussion in 'Homework Help' started by sanazy24, Oct 21, 2011.

  1. sanazy24

    Thread Starter New Member

    May 4, 2010
    2
    0
    hi
    i have a problem in simulating this circuit with pspice
    i try to simulate a differential amplifier with the two bjt and i use dc sweep for my voltage source as a simulatian but there is no result and has error of floating nodes.
    Would anybody plz help me with running this ?
    tnx alot
     
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  2. Adjuster

    Well-Known Member

    Dec 26, 2010
    2,147
    300
    You may have used an "earth" symbol that only joins connections together, but does not establish a true reference ground. The PSpice ground I have used shows a "0" symbol.
     
  3. ahmed_hero

    New Member

    Nov 25, 2011
    4
    0
    hello,here is my design,it's supposed to have an output Voltage +-7.5 V peak to peak but I don't know how can I simulate the project to Ac Analysis
     
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