Published:2009/6/16 21:08:00 Author:May | From:SeekIC
This circuit which uses an LM1458 or similar op amp is a fourth-order high-pass filter with a 24 dB/octave roll-off The values of R1/R2,R3/R4,C1/C2,C3/C4 can be scaled to suit other cutofffre quencies
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