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Foundations of Wireless and Electronics, 10th Edition
book

Foundations of Wireless and Electronics, 10th Edition

by M. G. Scroggie, S. W. Amos
October 2013
Intermediate to advanced content levelIntermediate to advanced
570 pages
27h 46m
English
Newnes
Content preview from Foundations of Wireless and Electronics, 10th Edition
317
r.f.
AMPLIFIER
ο
OUTPUT
(a)
c
o
OUTPUT
(b)
Fig. 18.17 Practical ratio detector circuits, {a) unbalanced and (b) balanced
input for the centre point of L
s
is obtained from a coil L
3
tightly
coupled to L
p
. Circuit a is unbalanced, one side of the load circuit
being earthed, and the output is taken from C
2
. Circuit b is balanced,
the midpoint of the diode load circuit being earthed. The output is
taken from Cj but it could equally well be taken from C
2
. This circuit
also includes resistors R
4
and R
5
to optimise the a.m. rejection. In
both circuits the two load resistors R
x
and R
2
are replaced by a single
equivalent resistor R
3
. Notice, too ...
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Publisher Resources

ISBN: 9781483105574