Skip to Main Content
Newnes Circuit Calculations Pocket Book
book

Newnes Circuit Calculations Pocket Book

by Thomas J. Davies
April 2016
Intermediate to advanced content levelIntermediate to advanced
384 pages
12h 56m
English
Newnes
Content preview from Newnes Circuit Calculations Pocket Book
12 Phasors
12.1
Introduction
Chapter 11 showed that problems in a.c. circuits can be solved using
phasors. A phasor has both magnitude and direction and it can be
resolved into two components at right angles to each other. Figure
12.1 shows a phasor OA, and this can be written as
x + }y
O x
Figure
12.1
x is the horizontal component, and the operator / is introduced to
indicate that the other component is along the y axis.
x + jy is called a complex number, x, the horizontal component, is a
real number. If the vertical component is an imaginary number,
Figure 12.1 shows that the length of the phasor OA is
V(*
2
+ y
2
) (modulus)
and the phase angl ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Power Supplies for LED Driving, 2nd Edition

Power Supplies for LED Driving, 2nd Edition

Steve Winder

Publisher Resources

ISBN: 9781483101132