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LTSpice plot voltage vs step param

Discussion in 'Electronic Design' started by Marco Trapanese, Jan 23, 2013.

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  1. Hello,

    I can't figure out how to plot a voltage versus a step parameter.
    I defined:

    ..step param R 100 150

    but now I don't know what's the right simulation directive.
    I tried the tran command, and it actually plots several curves for each
    step. They are super-imposed of course.
    Instead the goal is to put my {R} variable into the horizontal axis -
    changing the plotted quantity field leads to error (undefined symbol).

    I searched in the help without find anything useful.
    Thanks in advance
  2. Il 23/01/2013 15:52, Jim Thompson ha scritto:

    If I understand correctly the guide the .dc directive requires either a
    voltage or current source to sweep.

  3. Il 23/01/2013 18:23, Jim Thompson ha scritto:

    Thank you very much Jim.
    Tomorrow I will try the solution proposed - anyway I'm afraid it's not
    what I'm looking for.

    I'll join the list too.

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