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Analog Electronics
book

Analog Electronics

by Ian Hickman
October 2013
Intermediate to advanced content levelIntermediate to advanced
342 pages
16h 43m
English
Newnes
Content preview from Analog Electronics
Passive circuits
37
you felt
so
inclined. Then becomes
α
(say)
and
7:
= 1/a.
Resonant circuits
Figure
2.7
shows
an
important example
of a
two-pole (second-order) circuit.
At
some fre-
quency
the
circuit will
be
resonant
i.e. |]ω7| =
1ΐ/]ωΓ|. At
this frequency,
the PD
across
the
inductor will
be
equal
in
magnitude
and
opposite
in sign
to the PD
across
the
capacitor,
so
that
the
net
PD
across
L and C
together
(but not
across
each separately) will
be
zero.
The
current
ζ
will
then exhibit
a
maximum
of / = vJR. At
resonance,
then,
ΐ[]ωΕ
+
(1/]ωΟ]
=
O,
so ω-LC = 1 and
ω
= 1/V(LC).
Let's give this value
of ω the
label
ω„.
At ω,, the
output voltage
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Publisher Resources

ISBN: 9781483162287