Controlled-potential bias circuit for electrochemical cells
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United States of America Patent
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Feb 10, 1987
Grant Date -
N/A
app pub date -
Feb 19, 1985
filing date -
Feb 19, 1985
priority date (Note) -
Expired
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Abstract
A bias circuit (13) for an electrochemical fuel cell (15) serving for example as a carbon monoxide or hydrogen sulfide detector, including an operational amplifier tied to the anode and reference terminals (21,23) of the fuel cell (15), and a zener diode (50) arrangement for maintaining a predetermined voltage drop between the output and negative inputs of the operational amplifier (33).
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