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-Symbiotic- R-Wave Monitor

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This paper describes an electronic device which monitors the R-wave portion of the ECG signal of the heart and provides an audible and/or visible indication of the rhythm and rate of the heart. The R-wave monitor obtains its output signal from the recorder output jack of an electrocardioscope and appropriates its energy from the dc level appearing at the recorder output jack.

JAES Volume 17 Issue 5 pp. 550-553; October 1969
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