Comparison of Howland and General Impedance Converter (GIC) circuit based current sources for bio-impedance measurements

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Comparison of Howland and General Impedance Converter (GIC) circuit based current sources for bio-impedance measurements

The current source is a key component in bio-impedance measurement systems. The accuracy of the current source can be measured in terms of its output impedance together with other parameters, with certain applications demanding extremely high output impedance. This paper presents an investigation and comparison of different current source designs based on the Enhanced Howland circuit combined w...

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Computer Simulation of Microelectrode based Bio-Impedance Measurements with COMSOL

Electrical models for microelectrode-cell interfaces are essential to match electrical simulations to real biosystems performance and correctly to decode the results obtained experimentally. The accurate response simulation of a microelectrode sensor to changes in the cell-electrode system, such as cell growth, enables the optimum microelectrode design process. We report the use of COMSOL quasi...

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ژورنال

عنوان ژورنال: Journal of Physics: Conference Series

سال: 2010

ISSN: 1742-6596

DOI: 10.1088/1742-6596/224/1/012167