Using Tina-Ti Fourier Series analysis

Discussion in 'Electronics Resources' started by gaetan8888, Nov 1, 2009.

  1. gaetan8888

    Thread Starter Active Member

    Nov 14, 2008
    41
    0
    Hello

    I have Tina-Ti, with all types of analog circuits simulations, wen I use the Fourier Series analysis it give wrong values since it give mostly between 7% and 50% of distortions reading, I did compared those distortions numbers of my circuits by making prototypes using my HP distortion analyser and the number are a allways under .01% of distortion with my HP.

    I include an image of test circuit on Tina-Ti.

    Do I made any errors in my use of the Fourier Series ?

    A helps are welcome.

    Thank you

    Bye

    Gaetan
     
  2. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,164
    At audio frequencies, assuming you change C1 to a much larger value, the distortion goes way down, 0.0025xxxxxx%.

    What is your objective?
     
  3. gaetan8888

    Thread Starter Active Member

    Nov 14, 2008
    41
    0
    Hello

    That circuit was a test for a treble booster.

    Thank

    Bye

    Gaetan
     
  4. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,164
    If your signal of interest is treble frequencies and above, you could have used a high pass filter like the one in the attached file.
     
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