Accession Number : AD0718958

Title :   Capacitive Electrocardiograph Electrodes.

Descriptive Note : Technical rept.,

Corporate Author : TEXAS UNIV AUSTIN ELECTRONICS RESEARCH CENTER

Personal Author(s) : Rylander,Henry Grady , III ; Richardson,P. C. ; Taylor,H. L. ; Vogt,F. B.

Report Date : 04 SEP 1970

Pagination or Media Count : 120

Abstract : A discrete capacitive electrode system and a hybrid capactive sensor system were constructed and evaluated. Most of the fundamental characteristics of capactive electrodes were ascertained with a discrete component system because all of the system parameters could be varied easily. A hybrid capacitive sensor system evolved as the optimized version of the discrete capacitive electrode system. The principal component of all the capacitive electrodes was a silicon-silicon oxide half-capacitor. The half-capacitor and the skin formed a capacitor when the capactive electrode was pressed against the skin. The effective capacitance formed by the discrete capacitive electrodes and human skin was large enough to obtain adequate low-frequency response when large amplifier input resistances were used. (Author)

Descriptors :   (*ELECTRODES, *ELECTROCARDIOGRAPHY), INSTRUMENTATION, DETECTORS

Subject Categories : Biomedical Instrumentation and Bioengineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE