Mathematical modelling of the dynamic electrical impedance of a parallel RC circuit using a Wien bridge oscillator

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Article type: Research Article

Authors: Giannoukos, Georgios^* | Min, Mart

Affiliations: Thomas Johann Seebeck Department of Electronics, Tallinn University of Technology, Tallinn, Estonia

Correspondence: [*] Corresponding author: Georgios Giannoukos, Thomas Johann Seebeck Department of Electronics, Tallinn University of Technology, Tallinn 19086, Estonia. E-mail:g.giannoukos@gmail.com

Abstract: In this paper a detailed mathematical model is presented in order to calculate the dynamic electrical impedance of a parallel RC circuit. The proposed model is based in an op-amp balanced Wien bridge oscillator and a voltage divider. From the amplitude of the signal and the phase shift we can calculate the resistance and the capacitance of a parallel RC circuit which can be used as an electrical equivalent of a tooth or a neuron.

Keywords: Biompedance, tooth, resistance, capacitor, Wien bridge oscillator, voltage divider, Operational Amplifier

DOI: 10.3233/JCM-150543

Journal: Journal of Computational Methods in Sciences and Engineering, vol. 15, no. 2, pp. 287-293, 2015