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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
28-16 Electrical Variables
whichcan make them unsuitable for many circuits. For most capacitors, the change in insulation
re
sistance
is an ex
ponential
fu
nction
of te
mperature
(R
T1
= R
T2
e
K(T1−T2)
). is can be substantial in high-
temperature
op
erations
. e te
mperature
de
pendence
of in
sulation
re
sistance
of co
mmon
ca
pacitors
is shown inFigure 28.8.
Frequency and impedance: Practical capacitors have increases in losses at very low and at very high fre-
quencies. At low frequencies, the circuit becomes entirely resistive and the dc leakage current becomes
eective. At very high frequencies, the current owing through the capacitor become importa
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Publisher Resources

ISBN: 9781439848913