FREQUENCY FILTER CIRCUIT,

FILTER AND NETWORK

Uses - filter circuit are used to filter a signal from many signals, used in mainly communication system,

Measurement - units-DECIBEL AND NEPER

Neper (N)=log_e(v1/v2)=log_e(i1/i2)

LOW PASS FILTER—a low pass filter passes up to cut off frequency

HIGH PASS FILTER—it attenuates all the frequencies up to cut off frequency,

Band pass filter—it passes frequencies between two designated cut off frequency,

Band Elimination Filter—IT passes all the frequencies outside the certain range,