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MEASUREMENT OF NON-LINEAR METAL ECG ELECTRODE POLARIZATION PARAMETERS OF INCREMENTAL LINEAR ELECTRICAL BRIDGE.
S C BERA, B SIKDAR, P C DHARA, D K BASU, T K MITRA
Published in -
1986
Volume: 67
   
Pages: 1 - 6
Abstract
The non-linear dependance of polarization impedance of a metal ECG electrode placed on the surface of a living biosample (toad) on current density, frequency, etc has been studied in terms of incremental linear lumped polarization resistance DELTA R//p and capacitance DELTA C//p by considering only the first order non-linearity. Experimental measurements of DELTA R//p and DELTA C//p have been performed with an incremental linear electrical bridge (modified Wein bridge) using small signal ac current density ( DELTA sigma //f) superimposed on dc current density ( sigma //n). From the experimental results, an approximate inverse relationship between the incremental linear polarization parameters DELTA R//p and DELTA C//p with the excitation frequency f has been found.
About the journal
JournalJournal of the Institution of Engineers (India), Part IDP: Interdisciplinary Panels
Publisher-