Оптичний перетворювач газу з частотним виходом для скринінг тесту штамів бактерії Helicobacter pylori

Abstract

The paper deals with the optical transducer of gas concentration with frequency output for screening test of Helicobacter Pylori bacteria strains. This optic-frequency transducer of gas concentration is constructed on the basis of a transistor structure with a negative differential resistance with sensitive to optical radiation of MOSFET transistors with absorption spectrum in the range of infrared radiation 1590 - 1610 nm corresponding to the absorption spectrum of NH3. A mathematical model of the optical-frequency transducer of gas concentration has been developed, taking into account the influence of optical radiation on the elements of a nonlinear equivalent circuit of MOSFET transistors.