Resources Contact Us Home
Combined semiconductor gas sensor

Image Number 2 for United States Patent #5298783.

The present invention relates to a combined semiconductor gas sensor, this sensor is constituted by combining two portions, each of the portions is made of a different gas sensitive material, their resistance exhibit different variation with the variation of the density of a specific gas, a detecting signal is led out from the junction of the two portion. Because of the mutual compensation and propagation effect of the two portions of the above mentioned gas sensor, the stability and/or sensitivity as well as the stability to temperature and humidity and the initial relaxation time can be improved. Gas sensors of different characteristics can be obtained by different combinations of two different gas sensitive materials selected according to need.

  Recently Added Patents
Accelerator for a read-channel design and simulation tool
Front face of vehicle wheel
Detection of code-based malware
Cooking oven with energy saving mode and method
Endotracheal tube
Compositions and methods for inhibition of MMP13:MMP-substrate interactions
Portable, single member housing cord protector
  Randomly Featured Patents
Mass and force meter
Methods of recovering hydrocarbons from oil shale and sub-surface oil shale recovery arrangements for recovering hydrocarbons from oil shale
Temperature/pressure transducer
System for preparing mail items
Toilets with quick flush trapways
Method for classifying discharge machining wave patterns, and method for preventing arcs based on the classification of the discharge machining wave in discharge
Dental prophylaxis and water conservation device
Polymerization inhibitor
Feed comb arrangement
Circuit for speed measurement of vehicles according to the Doppler-radar principle