As we saw above, sinusoidal waveform can be defined by
three variables (Frequency, Magnitude, Phase). In case then all sources frequency are equal,
sinusoidal waveform can be defined by two variables (Magnitude, Phase). Phase and
Magnitude defines a phasor(vector) or complex number in polar form. Click here to learn about complex numbers.. In this case?
magnitude is Vector lenght, phase is the angle betwen phasor & x axis.
To determine instantaneous value at the same time, we rotate vector on angle corresponding
this time. Projection to Y (j) axis are instantaneous value.
On applet below enter magnitude, phase then press draw
button. Applet draws phasor and calculates real & imaginary part of complex. Press start button
to run simulation.
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