Simple question about phase difference

Discussion in 'General Electronics Chat' started by fankoushat, Mar 28, 2010.

  1. fankoushat

    Thread Starter New Member

    Mar 8, 2010
    17
    0
    Hello friends,

    Why do we care too much about the phase difference that occures by XL or XC or what ever? We take the rms value for the signal at the end.

    Does this phase difference important in some specific electronic circuits?
    If yes, please give me some examples.

    Thanks alot.
     
  2. dsp_redux

    Active Member

    Apr 11, 2009
    182
    5
    Hi, instead of giving you the answer right away, I'll ask you a question. Think about an audio signal. Two distinct sounds. What would be the difference between in-phase sounds vs not in phase?

    You have a summer amp. What is the difference between the sum of two signal in phase vs two not in phase? How would the signal look like? Are they the same?
     
  3. kamrannkami

    New Member

    Nov 28, 2008
    4
    0
    thats right... rms is just dc equivalent of a sine wave.. its just one parameter... its not the end of world for any wave
     
  4. dsp_redux

    Active Member

    Apr 11, 2009
    182
    5
    Sometimes, only the voltage is important, or the frequency, or the phase. It really depends on the application.
     
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