Angle notation
From Wikipedia, the free encyclopedia
Angle notation or phasor notation is a notation used in electronics using the ∠ sign. It is an abbreviation that arose due to the frequent occurrence of the expression ej φ and is used to describe phasors. Note that the phase angle φ is almost always written in degrees.
Where φ is the phase angle, and j is the imaginary unit (-1)1/2. One can convert from polar form to rectangular form:
and back again (with care to place the angle in the right quadrant) by:
Where R is usually the resistance part of the impedance and X is usually the reactance.
[edit] References
- Nilsson, James W. & Riedel, Susan A. (2005). Electric Circuits, Upper Saddle River, New Jersey: Pearson Prentice Hall. ISBN 0-13-146592-9
