Simple Waveform
Polarity and Interaction
a simple sine wave




      the signal is bi-polar
(it oscillates between positive and negative values)
Polarity

• the property of being polar (having positive
  and negative values)
• the relationship between the positive an...
same polarity

• these two signals have the
  same polarity

• when one is positive, the
  other is also positive

• when ...
different signals - same polarity

• these two signals are
  different, but they have
  the same polarity

• when one is p...
opposite polarity

• these two signals have
  opposite polarity

• when one is positive, the
  other is negative

• when o...
What happens when two
identical signals are combined
      (added together)?
same polarity addition

• these two signals have the
  same polarity

• when they are combined
  (added together)...
the amplitude doubles


          =
What happens when two
signals with opposite polarity
    are combined (added
          together)?
opposite polarity addition


• these two signals have
  opposite polarity

• when they are combined
  (added together)...
the waveforms
cancel each other out


          =
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Polarity Key Note

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  • Polarity Key Note

    1. 1. Simple Waveform Polarity and Interaction
    2. 2. a simple sine wave the signal is bi-polar (it oscillates between positive and negative values)
    3. 3. Polarity • the property of being polar (having positive and negative values) • the relationship between the positive and negative portions of two waves
    4. 4. same polarity • these two signals have the same polarity • when one is positive, the other is also positive • when one is negative, the other is also negative
    5. 5. different signals - same polarity • these two signals are different, but they have the same polarity • when one is positive, the other is also positive • when one is negative, the other is also negative
    6. 6. opposite polarity • these two signals have opposite polarity • when one is positive, the other is negative • when one is negative, the other is positive
    7. 7. What happens when two identical signals are combined (added together)?
    8. 8. same polarity addition • these two signals have the same polarity • when they are combined (added together)...
    9. 9. the amplitude doubles =
    10. 10. What happens when two signals with opposite polarity are combined (added together)?
    11. 11. opposite polarity addition • these two signals have opposite polarity • when they are combined (added together)...
    12. 12. the waveforms cancel each other out =
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