difference between two or more waveforms along a common axis
and sinusoidal waveforms
of the same frequency can have a phase difference.
The phase difference, Φ of an alternating waveform can vary from between 0 to its maximum
time period, T of the waveform during one complete cycle and this can be anywhere along
the
horizontal axis between, Φ = 0 to 2π (radians) or Φ = 0 to 360
o
depending upon the
angular units used.
Phase difference can also be expressed as a
time shift
of τ in seconds
representing a fraction
of the time period, T for example, +10mS or – 50uS but generally it is
more common to
express phase difference as an angular measurement.
Then the equation for the instantaneous value of a sinusoidal voltage or current waveform we
developed in the previous Sinusoidal Waveform will need to be
modified to take account of
the phase angle of the waveform and this new general expression becomes.
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