Informatics Publishing Limited

A. Nandhini ¹, V. Kannan ², E. Logashanmugam ¹, B. Sheela Rani ¹, Raju Daniel ³

Affiliations
1 Sathyabama University, Sholinganallur, Chennai, Tamilnadu, IN
2 Jeppiaar Institute of Technology, Kunnam, Kanchipuram District, IN
3 Institute of Plasma Research, Bhat, Gujrat, IN

Abstract

A stable integrator of long duration up to 5s has been designed for Aditya tokamak. In tokamaks, the accurate knowledge about the plasma position has been required for maintaining the distance between plasma and in vessel component. Hence, the value of plasma current, magnetic field and magnetic flux are to be calculated by integrating signals from the magnetic pick up loops. High accuracy integrators are required for the accurate magnetic measurements for long duration signals. The proposed integrator design composed of microcontroller, DAC, integrator and ADC. This design provides a stable output for noisy and drift input signal level up to 5s. The microcontroller has been used to maintain the stability of the output signal and also eliminate the offset induced noise components.

Keywords

ADC, Drift, Integrator, Microcontroller, Plasma.

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Janabai Giri ¹, A. Nandhini ¹

Affiliations
1 Department of Biochemistry, Sri Avinashilingam Home Science College for Women, Coimbatore 641 043, Tamil Nadu, IN

Abstract

Vitamin A deficiency is a major public health problem in India. It is estimated that 10,000 to 12,000 persons in India, mostly children go blind due to this deficiency. Pre-schoolers (4 to 6 years) the most severe and alarming nutrition deficient sector get their vitamin A through vegetables and fruits. It has been demonstrated that inclusion of green leafy vegetables in their diets results in marked increase in their serum vitamin A concentration.

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