Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Instrument Technique and Sensor》 2009-09
Add to Favorite Get Latest Update

Design of Potentiostat for Three-electrode Electrochemical Sensors

YAO Yu-sheng,XIE Yong-ping,WEN Tao(Department of Electronic Engineering,Dalian University of Technology,Dalian 116024,China)  
Three-electrode electrochemical sensor is used in the area of chemical,biology and environment detecting.To take full advantage of the performance of sensor and to achieve the portability of the detecting instrument,AT89S8252 SCM and IC chips such as A/D,D/A converter were selected for the design of a portable potentiostat to detect the signal of the electric current.The potentiostat makes the working voltage of the electrochemical sensor a constant and equal to the reference voltage by the voltage negative feedback adjusts system.To test the performance of the instrument,a testing was carried out using a circuit model which is equivalent to the three-electrode electrochemical sensor.The experimental result shows that the instrument has good accuracy.
【CateGory Index】: TM933.23
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved