REJECTION_FILTER

Published:2009/6/29 21:07:00 Author:May | From:SeekIC

Circuit Notes This narrowband filter using the 741 operational amplifier can provide up to 60 dB of rejection. With resistors equal to 100 K and capacitors equal to 320 pF, the circuit will reject 50 Hz. Frequencies within the 1 Hz to 10 kHz may be rejected by selecting components h accordance with the formula∶F=1/2πRCTo obtain rejections better than 40 dB，reslstors should be matched to 0.1％and capacitors to 1％.



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