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1_Hz_STATE_VARIABLE_FILTER

2017-02-13 21:11  
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1_Hz_STATE_VARIABLE_FILTER
1_Hz_STATE_VARIABLE_FILTER
Universal filter has simultaneous low-pass, bandpass, high-pass, and notch outputs all with cutoff frequency of 1 Hz. To scale circuit up to 1-kHz cutoff, replace 10-megohm resistors with 10K.-D.Lancaster, CMOS Cookbook, Howard W.Sams, Indianapolis, IN, 1977, p 343-344.