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Sine graph help

  1. Aug 31, 2014 #1
    1. The problem statement, all variables and given/known data


    So I have this task with opamp and I have Uinput Sine Graph, now I have to calculate Uoutput and write it as sine function and draw the sine graph. I know that this is an inverting OPAMP which means that output signal will be inverted, so I just have to flip this Input signal, right? With input signal the horizontal shift is -60° and when I invert the signal it will be +120°, right? This is the problem, I know how to calculate everything, but Im not sure about horzontal shift of output signal, because my friend is keep telling me its -60, and also more important Google is telling that

    Now my solution is Uout = 1.43*sin(104,7*10^3*t + 120)


    2. Relevant equations

    Are google and my friend wrong? Or am I wrong?

    3. The attempt at a solution

    My Solution
  2. jcsd
  3. Aug 31, 2014 #2


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    Staff: Mentor

    You think this is the answer, so why don't you plot this on graph paper and see whether it resembles the input inverted?
  4. Sep 1, 2014 #3
    I think Im right. Take a look at google link for where solution is +120°. Why is google moving that graaph 120°? It should be moved 120° left of y-axis, right?
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