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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
22-11Power Measurement
In the usual realization of the Hall multiplier (0.1% up to a few megahertz), shown in Figure 22.12a, the
ma
gnetic
in
duction
is pr
oportional
to th
e
lo
ad
cu
rrent,
an
d
th
e
opt
imal
po
larizing
cu
rrent
i
v
is set by
th
e
r
esistor
R
v
.
Fo
r
th
e
fr
equency
ra
nge
up to me
gahertz,
an al
ternative
ar
rangement
is sh
own
in Fi
gure
22.12
b,
in wh
ich
th
e
lo
ad
cu
rrent
I
L
flows directly into the Hall device, acting as a polarizing current,
an
d
th
e
ma
gnetic
fi
eld
is ge
nerated
by th
e
vo
ltage
v. In th
is
sa
me
wa
y,
th
e
te
mperature
in
flu-
ence
is re
duced
fo
r
li
ne-frequency
ap
plications
wi
th
co
nstant-amplitude
vo
ltages
an
d
va
riable
lo
adcu
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Publisher Resources

ISBN: 9781439848913