Controlled-potential bias circuit for electrochemical cells
US4642172A · kind A · utility
10Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1985 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Feb 19, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4065
- WIPO fieldMeasurement
- WIPO sectorInstruments
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.