STUDY AND ANALYSIS OF OTRA AND ITS APPLICATIONS

Abstract

The major goal of this thesis is to know about Operational Transresistance Amplifier (OTRA), its applications, performance and practical implementation of OTRA two CFOA AD844 ICs. Study and realization of Operational Transresistance Amplifier is presented. The development and use of operational Transresistance Amplifier model is very important in control and instrumentation engineering. This analysis taking the effect of Transresistance gain. The characteristics of OTRA circuit demonstrated through Proteus and Pspice simulation. The study and analysis of RC sine wave oscillator based on OTRA. Proposed oscillator consists of two CFOA AD844 ICs for implementing the OTRA and few passive components. The proposed OTRA based sine wave oscillator exhibit low sensitivity and good frequency stability. Operational Transresistance Amplifier (OTRA) based second order low pass filter is presented. The proposed LPF is depending on RC parameters. It’s insensitive to parasitic capacitances. It also insensitive to input resistance due to internally grounded input terminals of OTRA. Conventional controller such as proportional, integral and derivative individual and combined developed using operational Transresistance amplifier. These OTRA based conventional controllers are study and their characteristics analysis through Proteus simulation and results are verified in Mat lab. Operational Transresistance Amplifier and its application such as filter, oscillator and controllers are design and simulated with help of Proteous ISIS Professional simulation software. Their transient, frequency, phase and noise responses derived using Proteus. Some electronic part analysis using Orcad capture, Pspice A/D. The performance of controllers evaluated using Mat lab simulink. Hardware implementation of OTRA may be possible due to AD844AN current feedback amplifier. The Chapters focuses on the software tools, particular control problem and results.