+ Post New Thread
Results 1 to 8 of 8
  1. #1
    Member level 2
    Points: 1,090, Level: 7

    Join Date
    May 2013
    Posts
    46
    Helped
    0 / 0
    Points
    1,090
    Level
    7

    Mixed signal voltage sources for generating waveform

    hi guys i have orcad pspice 17.2 and i need to do a simulation where i have turn on and off using diffrent logic signals so i need to be able to find a vsource in the library the waveform would be similar to what you might see in a logic timing diagram if some one could help

    •   Alt16th April 2018, 06:40

      advertising

        
       

  2. #2
    Advanced Member level 5
    Points: 20,332, Level: 34
    barry's Avatar
    Join Date
    Mar 2005
    Location
    California, USA
    Posts
    3,920
    Helped
    845 / 845
    Points
    20,332
    Level
    34

    Re: Mixed signal voltage sources for generating waveform

    Do you mean a pulse/squarewave source?



  3. #3
    Member level 2
    Points: 1,090, Level: 7

    Join Date
    May 2013
    Posts
    46
    Helped
    0 / 0
    Points
    1,090
    Level
    7

    Re: Mixed signal voltage sources for generating waveform

    i mean like a digtal pulse waveform like a digital signal that is a repeating signal of these logic states (on,off,off,on,on) so like the picture i have attachedClick image for larger version. 

Name:	my timing pulse.jpg 
Views:	0 
Size:	26.4 KB 
ID:	146050
    Last edited by ant17; 16th April 2018 at 23:59.



    •   Alt16th April 2018, 23:45

      advertising

        
       

  4. #4
    Super Moderator
    Points: 241,412, Level: 100
    Awards:
    1st Helpful Member

    Join Date
    Jan 2008
    Location
    Bochum, Germany
    Posts
    41,891
    Helped
    12754 / 12754
    Points
    241,412
    Level
    100

    Re: Mixed signal voltage sources for generating waveform

    It's not clear if our problem is specifying the signal sequence or converting it to an analog signal. Both topics are covered by the Pspice reference manual. For the latter problem, the default digital input device most likely does what you want.



  5. #5
    Member level 2
    Points: 1,090, Level: 7

    Join Date
    May 2013
    Posts
    46
    Helped
    0 / 0
    Points
    1,090
    Level
    7

    Re: Mixed signal voltage sources for generating waveform

    problem is in finding a source in the library that would produce a digital waveform like the one i tried to draw attached to the forum. i know i can produce something like that with the stim1 part and its command 1 to 16 properties but i cant get it to repeat



  6. #6
    Advanced Member level 5
    Points: 20,332, Level: 34
    barry's Avatar
    Join Date
    Mar 2005
    Location
    California, USA
    Posts
    3,920
    Helped
    845 / 845
    Points
    20,332
    Level
    34

    Re: Mixed signal voltage sources for generating waveform

    You could just take the brute force approach and sum three pulse sources to get your required periodic signal



  7. #7
    Super Moderator
    Points: 241,412, Level: 100
    Awards:
    1st Helpful Member

    Join Date
    Jan 2008
    Location
    Bochum, Germany
    Posts
    41,891
    Helped
    12754 / 12754
    Points
    241,412
    Level
    100

    Re: Mixed signal voltage sources for generating waveform

    I guess you didn't yet try PWL sources. They have repetition features.



    •   Alt17th April 2018, 16:16

      advertising

        
       

  8. #8
    Member level 2
    Points: 1,090, Level: 7

    Join Date
    May 2013
    Posts
    46
    Helped
    0 / 0
    Points
    1,090
    Level
    7

    Re: Mixed signal voltage sources for generating waveform

    how does picewiselinear

    work and how do you set it up and is that the best way to do it



--[[ ]]--