October 2013
Intermediate to advanced
312 pages
12h 10m
English
Content preview from The Maplin Electronic Circuits Handbook, 2nd Edition
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TRANSFORMERS 25
1
-
1
+
1
+
1
L L
x
L
2
L
3
In the former case, the formula can be more conveniently rearranged as
follows:
L
x
+ L
2
(This can be simply remembered as the product of the two inductance
values divided by the sum of the two values.)
inductors on a.c.
The reactance of an inductor is defined as the ratio of applied voltage to
current and it is measured in Ω. The reactance of an inductor depends not
only upon the value of inductance but also upon the frequency of the
applied voltage. The following formulae can be used to determine the
inductive reactance:
X
L
= j- = 2nfL
Where X
L
is the reactance in Ω, / is the frequency in Hz, and L
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