| 摘要 |
An amplification circuit for use with an electro chemical cell is disclosed. The cell is operated in the amperometric mode and finds beneficial application in the detection of carbon monoxide (CO) gas. The amplification circuit of the invention is used to derive electrical output signals from the cell whilst ensuring that the cell electrodes are held at a potential that minimises cross-sensitivities and controlling voltage spikes which the cell would otherwise extend in duration, due to its capacitive behaviour, and comprises an operational amplifier connected to derive electrical output signals from the cell and having a feedback path incorporating at least one component of a current mirror circuit.
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