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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
5-11Principles and Technology of SQUIDs
edierence between the voltage developed across the unknown impedance Z and that developed
in th
e
se
condary
of a nu
lling
mu
tual
in
ductor
m is ap
plied
to th
e
in
put
of th
e
SQ
UID
ci
rcuit
. e pr
i-
mary
cu
rrent
in m is pr
oportional
to th
e
os
cillator
vo
ltage
an
d
de
ned
by th
e
se
tting
of th
e
ra
tio
tr
ans-
former(α)
. An ad
ditional
re
active
cu
rrent
is su
pplied
by a se
cond
ra
tio
tr
ansformer
(β) th
at
ca
uses
th
e
pr
imary
cu
rrent
to be pa
ssed
th
rough
a ca
pacitor
ra
ther
th
an
a re
sistor,
th
us
ge
nerating
a 90
°
ph
ase
sh
i
in th
e
vo
ltage
ap
plied
to m. e am
plied
o
-balance
sig
nal,
wh
ich
ap
pears
at th
e
ou
tput
of th
e
SQ
UI ...
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Publisher Resources

ISBN: 9781439848913