1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

LTspice simulation distortion function

Discussion in 'Circuit Simulation & PCB Design' started by gilmanli, Sep 28, 2010.

  1. gilmanli

    gilmanli New Member

    Joined:
    Jun 13, 2010
    Messages:
    39
    Likes:
    0
    Dear all,
    I used LTspice SW few weeks ago.After completed a JFET Amp. polted the AC analysis the result is fine but I want to check the Amp. distortion,I can't find this function at LTspice.Does any one tell me how to do this function at LTspice or other simulation SW can do that ?
    I read the LTspice manual carefully how to check the noise function at LTspice but I can not understand how to do,does any one help me ? Enclose are the circuitry and AC anlysis ploting result for your reference.

    Best regards,
    Gilman Li.
     

    Attached Files:

  2. MikeMl

    MikeMl Well-Known Member Most Helpful Member

    Joined:
    Mar 17, 2009
    Messages:
    11,057
    Likes:
    541
    Location:
    AZ 86334
    Join the LTSpice group on YAHOO. Look in their FILES section for examples on how to use the .DISTO function, Spectral analysis, and .NOISE analysis.
     
  3. gilmanli

    gilmanli New Member

    Joined:
    Jun 13, 2010
    Messages:
    39
    Likes:
    0
    Dear Mike,
    Much thank,I will joint the groud.

    Best regards,
    Gilman Li.
     
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. koolguy

    koolguy Active Member

    Joined:
    Aug 24, 2010
    Messages:
    2,196
    Likes:
    9

    while designing op-amp in LT spice, the output some times is in KV rating i don't understand from where KV come as i apply less than 10v so, how it is possible.

    pls tell...!
     
  6. MikeMl

    MikeMl Well-Known Member Most Helpful Member

    Joined:
    Mar 17, 2009
    Messages:
    11,057
    Likes:
    541
    Location:
    AZ 86334
    You are doing something non-physical. e.g. feeding a current-source into a very high-impedance will produce kV. Post your circuit.
     
  7. koolguy

    koolguy Active Member

    Joined:
    Aug 24, 2010
    Messages:
    2,196
    Likes:
    9
    but how can it give output upto kv rating.
     
  8. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,189
    Likes:
    644
    Location:
    Ex Yorks' Hants UK
    What would the voltage be across a 10 meg ohm resistor which had a constant current of 100mA flowing thru it.???
     
  9. koolguy

    koolguy Active Member

    Joined:
    Aug 24, 2010
    Messages:
    2,196
    Likes:
    9
    I want to run 555 ic in lt spice for this the above link given is not working or i can't run that pls tell how to add and run more ic's.
     
  10. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,189
    Likes:
    644
    Location:
    Ex Yorks' Hants UK
    hi,
    Do you mean this link.?
    LTspice : LTspice/SwitcherCAD III
     
  11. koolguy

    koolguy Active Member

    Joined:
    Aug 24, 2010
    Messages:
    2,196
    Likes:
    9
    I want to add IC 7808 in lt spice.
     
  12. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,189
    Likes:
    644
    Location:
    Ex Yorks' Hants UK
  13. koolguy

    koolguy Active Member

    Joined:
    Aug 24, 2010
    Messages:
    2,196
    Likes:
    9
    Yaa, but don't get what i need.
     
  14. koolguy

    koolguy Active Member

    Joined:
    Aug 24, 2010
    Messages:
    2,196
    Likes:
    9
    i got it!!
     
  15. koolguy

    koolguy Active Member

    Joined:
    Aug 24, 2010
    Messages:
    2,196
    Likes:
    9
    I am not able to design Transformer (step Down) for 78xx series regulator, pls help!!
     
  16. koolguy

    koolguy Active Member

    Joined:
    Aug 24, 2010
    Messages:
    2,196
    Likes:
    9
    reply ....!!
     
  17. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,189
    Likes:
    644
    Location:
    Ex Yorks' Hants UK
    hi,
    Look at these asc files.
     

    Attached Files:

  18. koolguy

    koolguy Active Member

    Joined:
    Aug 24, 2010
    Messages:
    2,196
    Likes:
    9
    Sir, i think you are expert of Lt spice, any more interest of yours??
     
  19. koolguy

    koolguy Active Member

    Joined:
    Aug 24, 2010
    Messages:
    2,196
    Likes:
    9
    Hi, I want to add 4017 IC in Lt spice. pls help..!!
     
  20. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,189
    Likes:
    644
    Location:
    Ex Yorks' Hants UK

    Attached Files:

  21. koolguy

    koolguy Active Member

    Joined:
    Aug 24, 2010
    Messages:
    2,196
    Likes:
    9
    i have joined but not getting, what i want.
     

Share This Page