Device for operating a gas sensor
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United States of America Patent
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Nov 10, 2015
Grant Date -
May 17, 2007
app pub date -
Apr 6, 2004
filing date -
Apr 11, 2003
priority date (Note) -
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Abstract
A device for operating a gas sensor having both at least one pump cell and a measuring cell is provided. A constant current source is provided that makes available a pump current which acts upon an outer electrode of the pump cell. The constant current source provides at least two different amounts of the pump current and/or allows for an alternating operation having ON phases and OFF phases, the duration of the ON phases/OFF phases being specifiable. The device may be largely implemented in digital circuitry and adapted to different requirements.
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