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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
84-6 Signal Processing
to v
in
(t) indicates the direction of imbalance. In sensors like these, the modulating signal f
m
(t) is physical
variable being measured. e use of ac excitation to a sensor is required for sensors containing reactive
elements (inductances and/or capacitances); it may also be desirable in the case of resistive sensors (such
as st
rain-gage
br
idges)
re
quiring
hi
gh-gain
am
pliers
. In th
ese
ci
rcumstances,
am
plication
of an ac
sig
nal
mi
nimizes
bo
th
1/f no
ise
an
d
dc
-oset
pr
oblems
as
sociated
wi
th
hi
gh-gain
dc
-coupled
am
pliers
.
84.3.3 Envelope Demodulation of DSB AM Signals
Full-carrier AM signals are readily demodulated by t
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Publisher Resources

ISBN: 9781439848913