Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 40,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to original material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches

Active Filters: Notch
Notch Filters   #'s-D      E-M      N-Z

Active Filter -- Main Page
Last Updated on: Thursday, April 07, 2016 01:00 PM

 
Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

29.85 MHz Notch Filter Schematic -  Schematic only, no circuit description… [Email Dale Heatherington: dale111 AT wa4dsy.net]

 

60Hz Notch Filter -  High input impedance Amplifiers are ideal for buffering high impedance networks. Here a twin-T notch filter is shown to reject 60Hz signal content by more the 60dB. Small size, low valued capacitors can be used at such a low frequency with high valued resistors when using a CMOS op Amp… [Linear Technology App Note - , Mar 16th 2010]

 

78 RPM & RIAA Phono Equaliser -  Multi Standard 78 RPM and RIAA Phono Equaliser handles all "standards"… [Rod Elliott (ESP)]

 Adjustable 60Hz Filter -  On this page three adjustable notch filters configurations are shown. They can be used in your small pre-amp or Amplifier project to filter out any HUM at 50 Hz ( European ) or 60Hz. By substituting the capacitors values in the bridge other frequencies can be used. All op-amps configuration requires a +/- voltage supply which can easily provided with a voltage divider made of two.… [Stepan Novotill' website]

 

Adjustable Audio Notch Filter -  A variable notch filter with both high and low pass filters.  For audio frequencies 100Hz 10KHz … [Andy Collison]

 

Audio Notch Filter with Frequencies 100Hz-10kHz -  A variable notch filter with both high and low pass filters.  For audio frequencies 100Hz 10KHz … [Andy Collison]

 

Basic Introduction to Filters -  App Note - on active, passive and switched capacitor filters, document in PDF format…

 

BER meter is easy to build -  03/02/00 EDN Design Idea   A bit-error-rate (BER]tester is a basic tool for digital-communications measurements. Although many commercial BER testers are available, you can easily design and build an inexpensive version. The scheme in Figure 1 has performan… [by Luis Miguel Brugarolas, Sire Sistemas y Redes Telmaticas, Tres Cantos, Madrid, Spain]

 

Build An Adjustable High-Frequency Notch Filter -  02/06/03  EDN Design Idea   Although you can obtain universal, resistor-programmable switched-capacitor filters that are configurable as notch filters, most cannot operate at bandwidths higher than 100 kHz. Further, the typically 16- to 20-pin packages do not … [by John Ambrose, Mixed Signal Integration Corp, San Jose, CA]

 

Clock Tuned, Highly Selective Notch Filter -  This circuit shows a quick, clean way to tune a notch filter’s center frequency by varying a single resistor, which could be switched. The LTC1062 switched capacitor filter and A1 form a clock tunable notch (see LTC1062 data sheet). O1, running from the 5V supply, furnishes the clock, which is level shifted by Q1 to drive the ±5V powered LTC1062. In this case, three common notch frequencies are listed; others are selectable by tuning O1 in accordance with the equivalency listed… [Linear Technology App Note - , Mar 26th 2010]

 

Closing the loop deepens notches -  02/07/02  EDN Design Idea   Notch filters remove a single unwanted frequency from an input signal. They are also a vital component of pulse-shaping networks, such as time-averaging filters. You can tune a state-variable filter over a wide range by changing the… [by Tom Napier, North Wales, PA]

 

CW Filters -  … [from Harry Lythall's website]


[Google-ADS/i-ad-728x15-Links.htm]

Notch Filters   #'s-D      E-M      N-Z


HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy

Copyright  2002 - 2015 David A. Johnson & Associates.  All Rights reserved. 
 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.