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PubMed · 1199685

A low frequency active filter with plug-in tuning impedances.

P Zalud·M Indra·I Krekule
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Abstract

A new approach to the construction of low frequency (1 Hz -- 20 kHz) active filters, based on the application of a pair of IC operational amplifiers forming a separate module and a plug-in unit containing RC tuning circuits, is described. The electronic circuits and the design of the filters are presented with all details.

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P Zalud, M Indra, I Krekule. 1975. A low frequency active filter with plug-in tuning impedances.. https://pubmed.ncbi.nlm.nih.gov/1199685/

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