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Unformatted text preview: Lectures 22 Phasors and their uses Generalizing complex exp. Can describe a complex exponential as either magnitude and phase (polar) or as a weighted sum of real, imaginary (cartesian) ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 t B t A t V t m t m t V t m t V sin cos sin sin cos cos cos = = + = ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 t j jB A t V t j jm m t V t j j m j t j m t V exp exp sin cos exp exp exp + = + = = + = Can describe a sinusoid either by magnitude and phase (polar) or as a weighted sum of sine, cosine (cartesian) cos( t) sin( t) A B m real imag A B m The phasor transform Converting phase/mag to Cartesian (complex notation): Converting complex cartesian to angle + magnitude ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 sin , cos exp exp m B m A t j jB A j t j m t V = = + = + = Allows intraconversion between complex numbers and magnitude/phase real imag...
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This note was uploaded on 11/21/2011 for the course ECE 2100 taught by Professor Kelley/seyler during the Spring '05 term at Cornell University (Engineering School).
 Spring '05
 KELLEY/SEYLER

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