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Newnes Circuit Calculations Pocket Book
book

Newnes Circuit Calculations Pocket Book

by Thomas J. Davies
April 2016
Intermediate to advanced content levelIntermediate to advanced
384 pages
12h 56m
English
Newnes
Content preview from Newnes Circuit Calculations Pocket Book
18 Filters and attenuators
18.1 Introduction to filters
A network which attenuates certain frequencies but passes others
without loss is called a filter. A filter therefore possesses at least one
'pass band', i.e. a band of frequencies where the attenuation is zero,
and at least one 'attenuation band', where the frequencies have
finite attenuation.
The frequencies that separate the various 'pass' and 'attenuation'
bands are called 'cut-off frequencies, usually denoted by
f\,fj,
etc.
or by /
c
if there is only one 'cut-off frequency.
All filters are constructed from reactive elements; otherwise the
attenuation would never become zero.
18.2 Th ...
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Publisher Resources

ISBN: 9781483101132