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pspice add 2 sine waves for an input

Discussion in 'CAD' started by Jason S., Sep 23, 2003.

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  1. Jason S.

    Jason S. Guest

    How do I give an input to a circuit in PSPICE Lite 9.2 that is the sum
    of 3 sine waves?

    Normally for one sine wave I would do something like
    V1 1 0 AC 1 SIN(0 .006 1E3 0 0 30)

    I want to have the input be something like
    V1 1 0 AC 1 (SIN(0 .006 1E3 0 0 30)+SIN(0 .012 2E3 0 0 90)+SIN(0 2 3E3
    0 0 0))

    That is, V1=.006sin(1000t+30)+.012sin(2000t+90)+2sin(3000t)

    Thanks
     
  2. Jim Thompson

    Jim Thompson Guest

    V1 1 0 SIN(0 .006 1E3 0 0 30)
    V2 2 1 SIN(0 .012 2E3 0 0 90)
    V3 3 2 SIN(0 2 3E3 0 0 0)

    V(3,0) is the sum.

    You *may* need a resistor:

    R 3 0 1E9

    otherwise you may get a floating node error.

    (And I assume you meant there to be "2*pi*f*t" in your "That is"
    equation rather than "f*t"?)

    ...Jim Thompson
     
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