DESIGN AND CONSTRUCTION OF AN POTENTIOSTAT ELECTRONIC CIRCUIT WITH MICROCONTROLER ATXMEGA32

• Main Author: ABDUL MUID (NIM: 20210010); Tim Pembimbing : Prof. Dr. Ing. Mitra Djamal, Prof. Dr. H. Buchari.
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/14597
• Institution: Institut Teknologi Bandung

Potentiostat is principal devices in modern electrochemical research for investigate the mechanism reaction which related to redox chemistry reaction and <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> other chemical phenomena. This tool can be use in several measurement applications such as measurement of sample concentrations, quality test of food and medicine, environmental monitoring, and biosensors. It has made a <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> potentiostat with relative small dimensions, simple and portable. The potentiostat use an op-amp and ATXMEGA32 microcontroller to build a control systems circuit. Electronic circuits designed to control the voltage <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> electrodes and measuring the current flow in an electrochemical cell. The signal voltage is applied between the working electrode (WE) and reference electrode <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> (RE) by inject of a current through the counter electrode (CE). Voltage of reference electrode is kept to constant relatively to the working electrode. The current in an electrochemical cell is measured through the working electrode (WE). <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> The range measurement is between -1600mV and +1600mV with resolution 1 mV. The measurements test results for some electrochemical cell samples with cyclic voltammetry technique has shown good results.