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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
18-16 Electrical Variables
e circuit section aer node 4 is a low-pass lter that extracts the dc component of the input signal.
e
refore,
t
he
c
ircuit
o
utput
v
oltage
i
s
g
iven
b
y
V
k
T
v t t kV
T
o i
2
i
2
0
d= =
( )
(18.44)
thus providing an output signal proportional to the squared rms value of the input signal v
i
(t) in accor-
dance
wi
th
Eq
uation
18.40. Qu
antities
k
1
, k
2
, and k depend on the values of the elements in the circuit in
Fi
gure
18.14. Un
der
ci
rcuit
op
erating
co
nditions,
th
eir
va
lues
ca
n
be co
nsidered
co
nstant,
so th
at
k
1
, k
2
,
an
d
k c
an
b
e
c
onsidered
c
onstant
a
lso
.
If ca
refully
de
signed,
th
is
ci
rcuit
ca
n
fe
ature
an un
certainty
in th
e
ra
nge
of ...
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Publisher Resources

ISBN: 9781439848913