IEEJ Transactions on Electronics, Information and Systems
Online ISSN : 1348-8155
Print ISSN : 0385-4221
ISSN-L : 0385-4221
Letter
Potentiostat Circuits for Biomedical Instrumentations
Isao Dendo
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2003 Volume 123 Issue 1 Pages 161-162

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Abstract
The potentiostat system consisting of a constant voltage driving negative feedback circuit is very useful in understanding of electrochemical interfacial phenomena. This paper proposes a designing method for a simplified potentiostat circuit for biomedical instrumentations and bio-sensors, by using conventional op-amplifiers and instrumentation amplifiers. The ranges are 10μV∼10mV, 0.1nA∼10mA in the frequency of 10Hz∼10kHz. Results of the loop frequency characteristics, the intrinsic noises and the Lissajous characteristic of a designed potentiostat consisting of low noise and low bias-current op-amps. and instrumentation amps. are shown.
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© 2003 by the Institute of Electrical Engineers of Japan
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