Частотний перетворювач концентрації метану на основі транзисторної структури з від’ємним опором

Abstract

In this master's qualification work the study of the frequency converter methane concentration based transistor structure with negative resistance. Also, the analysis of the current state concentration of methane converters that are based on different methods. In the theoretical part of the classification microelectronic sensor gas and gas sensors described semiconductor resistive type, based ionnoselektyvnyh polvyh transistors, diodes and field-effect transistors. The calculation of the current-voltage characteristics of the converter. In the experimental of the thesis are flowcharts experimental units and experimental results in removal of the current-voltage characteristics and other dependencies. The economic part was defined cost, economic impact and payback of the device. Also consider life safety.