design a notch filter

[botthe.]

how to design a notch filter for removing 50Hz freq. from signal along with the filter's working..

thank you

 

[Ow@i$]

Attach dock will help, download the free software Filterpro from TI website and design a filter, for theory read the document..
Cheers!!!

 

[kam1787]

http://www.docircuits.com/learn/tag/twin-t-notch-filter/
http://www.changpuak.ch/electronics/Active_Notch_Filter.php
http://www.radio-electronics.com/info/circuits/opamp_notch_filter/opamp_notch_filter.php

 

[Analog Ground]

Attach dock will help, download the free software Filterpro from TI website and design a filter, for theory read the document..
Cheers!!!

See page 25 and consider the UAF42. This is a really great part for a notch filter with small parts count.

 

[Audioguru]

Maybe the 50Hz you want to remove is interference from the electricity mains. What about its harmonics at 100Hz, 150Hz, 250Hz and higher frequencies?