Schematic Diagram

In sometimes when want to decrease especial frequency noise that want only. This circuit can help you , it does will not let 60HZ frequencies s can change. Then decrease the noise. By use the integrated circuit , 741 numbers highly popular , economize and don’t seek buy easy with , if , friends , want to filter especial which frequency the one frequency. As a result change the value RC see the detail has added in the circuit sir.