A feedback circuit consisting of a single-pole lowpass active filter and a Howland source diverts current from the phototransistor's base to avoid saturation at excessive background-light levels

AuthorsJC Ferrer, A Garrigós
Main DocumentArticle «Feedback circuit enhances phototransistor's linear operation»
DescriptionFigure 2
File Format / SizePDF / 23 Kb
Document Languageenglish

A feedback circuit consisting of a single-pole lowpass active filter and a Howland source diverts current from the phototransistor's base to avoid saturation at excessive background-light levels

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