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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
27-6 Electrical Variables
27.2 Charge Ampliers
e conversion of a charge, Q, into a measurement voltage involves at some stage the transfer of that
ch
arge
on
to
a re
ference
ca
pacitor,
C
r
. e voltage, V
r
, developed across the capacitor gives a measure of
th
e
ch
arge
as Q = V
τ
/C
r
. ere are two basic amplier congurations for carrying out such measure-
ments
u
sing
t
he
r
eference
c
apacitor
i
n
e
ither
a s
hunt
o
r
f
eedback
a
rrangement
.
27.2.1 Shunt Ampliers
Figure 27.4 shows a typical circuit in which the reference capacitor is used in a shunt mode. In this exam-
ple,
it is as
sumed
th
at
th
e
ch
arge
th
at
is to be me
asured
is th
e
re
sult
of th
e
in
tegrated ...
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Publisher Resources

ISBN: 9781439848913