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

 

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.

 

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.

 

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...

 

Hello,

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

Bertus