Controlled-potential bias circuit for electrochemical cells

Details Controlled-potential bias circuit for electrochemical cells Controlled-potential bias circuit for electrochemical cells

1985-02-19

1987-02-10

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204406, 204412, 204432, C25B 1500, G01N 2746

Patent

active

046421726

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).

REFERENCES:
patent: 3909386 (1975-09-01), Oswin et al.
patent: 3944473 (1976-03-01), Spaepen et al.
patent: 4123700 (1978-10-01), LaConti et al.
patent: 4227988 (1980-10-01), Galwey et al.
patent: 4348632 (1982-09-01), Galwey et al.

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