Lm324 bandpass active filter

[Navarr0]

Hello. In ti datasheet of lm324 I found this active bandpass filter. In multisim its working really well. But how can I calculate components for another freq than 1khz?

https://oi39.tinypic.com/97ky6x.jpg

 

[LvW]

Hello. In ti datasheet of lm324 I found this active bandpass filter. In multisim its working really well. But how can I calculate components for another freq than 1khz?
https://oi39.tinypic.com/97ky6x.jpg

Frequency changes can be achieved simply by scaling the capacitor values (without C3, of course).

 

[Navarr0]

Thank you very much! It works.

 

[crutschow]

FilterPro is a free download program from Texas Instruments which will calculate values for many types of active filters.

 

[Navarr0]

I know, but i can't make any circuit from filterpro to work in multisim with single supply +5V opamp.

So another question, is possible to change gain of the filtr from my first post?

 

[FvM]

i can't make any circuit from filterpro to work in multisim with single supply +5V opamp

Sounds like a trivial point, add suitable DC bias, which isn't provided in the FilterPro circuits.