Position: Index > Basic Circuit >

Tunable notch filter to suppress hum

2015-01-11 02:44  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.

This narrow-stop-band filter can be tuned by the pot to place the notch at any frequency from 45 to 90 Hz. It attenuates power-line hum or other unwanted signals by at least 30 dB
Tunable notch filter to suppress hum

Because the circuit uses wide-tolerance parts, it is inexpensive to build.

Reprinted Url Of This Article: