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Converting input in rlc circuits

  1. Dec 18, 2012 #1
    I was wondering how to convert E=70.7sinwt..<-- (just an example)
    to something like 50∠0 degrees? ​
     
  2. jcsd
  3. Dec 19, 2012 #2

    NascentOxygen

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    Staff: Mentor

    Hi VerdictGuilty, http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif [Broken]


    E=70.7sin(Ѡt + 10°)
    =70.7∠10°

    Too easy!
     
    Last edited by a moderator: May 6, 2017
  4. Dec 19, 2012 #3
    You're converting it to phasor representation. You want to employ Euler's identity to convert the sinusoid to a complex number from which you can obtain the modulus(magnitude) and phase.
     
  5. Dec 19, 2012 #4
    @NascentOxygen,

    Since the phase angle is based on the cosine function, are you missing a -90deg factor in your answer? should it be 70.7∠-80?
     
    Last edited: Dec 19, 2012
  6. Dec 20, 2012 #5

    NascentOxygen

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    Staff: Mentor

    I referenced it to a sine wave.
     
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