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Passive Filters:
Band Pass Circuits
Passive Filters -- Main
Page
Last Updated on:
Sunday, April 22, 2012 07:12 AM |
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Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
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Band reject filter includes compensation - 04/13/00 EDN-Design
Ideas....Some band-reject LC filters employ a reactance to decouple
individual resonators. One such filter uses relatively small shunt inductors
to decouple series resonators, known as a top-L coupling. This type of
coupling readily achieves narrow filter bandwidths while.... [Design Idea by
Richard M Kurzrok, RMK Consultants, Queens Village, NY] |
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Bandpass Filter #1 - This circuit is taken from Progressive
Communications Receiver in most of recent ARRL Handbooks. Values for
40 meter band are shown. (added 02/05) |
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Bandpass filter features adjustable Q and constant maximum gain -
3-Mar-05 Issue of EDN Applications such as audio equalizers require
bandpass filters with a constant maximum gain that's independent of the
filter's quality factor, Q. However, all of the well-known filter
architectures—Sallen-Key, multiple-feedback, state-variable, and
Tow-Thomas—suffer from altered maximum gain when Q varies.... [Design Idea
by Herminio Martínez, Joan Domingo, Juan Gmiz, and Antoni Grau, Technical
University of Catalonia, Barcelona, Spain] |
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Basic Introduction to Filters: Active, Passive & Switched-Capacitor -
National Semiconductor Application Note....[App Note] |
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Components of a simple Bandpass filter - Electronic Circuit / Schematic c
(added 02/05) |
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Notch Filter is DC Accurate - 03/02/95 EDN-Design Ideas....Most active
filters exhibit noise, distortion, gain error, and dc offset. However, a filter
topology that separates the dc and ac paths can eliminate the last two of these
unwanted behaviors (Fig 1a). The dc path in this circuit has no op amps and,
therefore, no dc offset. The dc path does not have a dc gain error other than -6 dB of
attenuation that the R1/R2 divider causes. (This attenuation is absent if you omit the
R2 termination.) The ac path consists of C1 and a synthetic inductor comprising two
wideband transconductance amplifiers and associated components. The result is an
active circuit that emulates the passive filter of Fig 1b....[Design Idea by Gary
Sellani, Maxim Integrated Products, Sunnyvale, CA] |
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Notch Filter is DC Accurate - 03/02/95 EDN-Design Ideas…. EDN is migrating
links. This link is not verified. Search the "title" + "EDN" for new link.
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Wideband filter uses image parameters - 26-Oct-00 Issue of EDN-Design
Ideas....You can design various lowpass and highpass filters using image parameters (
Reference 1 and Reference 2 ]. By cascading a highpass and a lowpass filter.…PDF has
several circuits, please scroll to find this one.… [Design Idea by Richard M Kurzrok,
RMK Consultants, Queens Village, NY] |
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