Narrow Band Pass Filter

Discussion in 'The Projects Forum' started by George10101, Sep 25, 2014.

  1. George10101

    Thread Starter New Member

    Sep 25, 2014
    1
    0
    Hey, Im looking to create a Narrow band pass filter. I've designed the circuit but i just need to calculate values for the two resistors and capacitors. Between the frequencies of 5KHz and 10KHz is is when i will be allowing current to flow. I am connecting it up on a bread board. Could anyone help me please? My circuit design is attached. Thank you
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    The Completed Projects Forum is for Completed Projects only. It is meant to allow members to show plans for projects they built so other members can duplicate them if desired. Your thread does not belong in this forum, and was moved here.
     
  3. crutschow

    Expert

    Mar 14, 2008
    13,056
    3,245
    The corner frequencies of your circuit are 1/(2 pi RC). R1 and C1 determine the low frequency -3dB point and R2 and C2 detrermine the high frequency -3dB point.
     
  4. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
    1,066
    208.jpg

    Here are three different filters that come close to your requirements. Note the three different response curves (Green, Red, Blue). F3 is the "narrowest".

    Dont use 741's. They are a crummy opamp that was obsolete 30years ago...
     
    Last edited: Sep 25, 2014
  5. bertus

    Administrator

    Apr 5, 2008
    15,649
    2,348
    Hello,

    Have a look at section 16 of the attached PDF. (slod006)
    Also take a look at the attached application note.

    Bertus
     
Loading...