An electronic heart-beat recorder

E. van Vollenhoven, C.T. de Wit

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

An apparatus permitting to record the heart-beats of working persons is described. The input signal is obtained from a barrier layer photocell and a lamp at the ear-lobe. The signal is amplified by a differential amplifier with symmetrical input and feed-back.
Original languageEnglish
Pages (from-to)293-296
JournalApplied Scientific Research
Volume3
Issue number1
DOIs
Publication statusPublished - 1954

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    van Vollenhoven, E., & de Wit, C. T. (1954). An electronic heart-beat recorder. Applied Scientific Research, 3(1), 293-296. https://doi.org/10.1007/bf02123911