Gas sensor
AssigneeWinbond Electronics Corp.
InventorYu-Hsuan Ho
Life of this patent
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Abstract
A gas sensor including a first sensing component, a second sensing component and a voltage enhancement circuit is provided. The first sensing component is coupled between a first voltage and a first node, where an impedance value of the first sensing component is proportional to a gas concentration. The second sensing component is coupled between the first node and a second voltage, where an impedance value of the second sensing component is inversely proportional to the gas concentration. The voltage enhancement circuit is coupled to the first node to receive a node voltage provided by the first node, and correspondingly provides a gas sensing voltage.
Claims7
A gas sensor, comprising:
- a first sensing component, coupled between a first voltage and a first node, wherein an impedance value of the first sensing component is proportional to a gas concentration;
- a second sensing component, coupled between a second voltage and the first node, wherein an impedance value of the second sensing component is inversely proportional to the gas concentration;
- and
- a voltage enhancement circuit, coupled to the first node to receive a node voltage provided by the first node, and correspondingly providing a gas sensing voltage.
Dependencies are inferred from the claim text.