Bioelectric impedance measuring circuit

Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters

Reexamination Certificate

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C324S691000

Reexamination Certificate

active

08004291

ABSTRACT:
A bioelectric impedance measuring circuit for applying a current to an organism and measuring a bioelectric impedance of the organism is disclosed that includes a pseudo-sine wave generating circuit for generating a pseudo-sine wave based on an input square wave, a voltage/current converting circuit for outputting current to the organism in correspondence with the pseudo-sine wave generated by the pseudo-sine wave generating circuit, and a processing circuit for generating the square wave and supplying the square wave to the pseudo-sine wave generating circuit and measuring the bioelectric impedance based on a voltage output from the voltage/current converting circuit. The pseudo-sine wave generating circuit is included in a semiconductor integrated circuit.

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JP 2001-161655, Masato, Machine translation.
Green, D. C., Digital Electronics, 5thedition, Addison Wesley Longman, England, 1986, p. 328-342.

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