Linearizing transducer characteristics

Author

Patranabis, D. ; Ghosh, Sudip ; Bakshi, C.

Author_Institution

Dept. of Electron. & Telecommun. Eng., Jadavpur Univ., Calcutta, India

Volume

37

Issue

1

fYear

1988

fDate

3/1/1988 12:00:00 AM

Firstpage

66

Lastpage

69

Abstract

Most of the practical transducers fall into two categories regarding their input-output characteristics: type I, with a characteristic that is exponentially rising, and type II, with a characteristic that is exponentially decaying. While type I is easily linearized using a logarithmic converter, type II needs additional inversion means for the purpose of linearization. A technique for linearizing type-II transducer characteristic using a log-converter and a FET is presented, and its performance is compared with that of a simple single-stroke digital technique. Examples and experimental results are presented and discussed

Keywords

convertors; field effect transistor circuits; linearisation techniques; transducers; FET; exponentially decaying characteristic; input-output characteristics; linearisation; log-converter; logarithmic converter; temperature to voltage converter; thermistor coupled log amplifier; type-II transducer characteristic; Analog circuits; Application software; Computer applications; FETs; Hardware; Moisture; Sensor phenomena and characterization; Software packages; Thermal sensors; Transducers;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.2666

Filename

2666