An Improved Linear Temperature/Voltage Converter Using Thermistor in Logarithmic Network

Development of thermistor signal conditioning circuit using artificial neural networks

“…These techniques utilised additional resistors connected either in series or parallel to the thermistor, which makes different segments of thermistor characteristic linearised only over a small range at the expense of limited sensitivity [2]. The analogue linearisation techniques connect the thermistor into circuits containing multivibrators [3], logarithmic amplifiers [4], pulse generator [5], analogue multipliers [6], sigma-delta modulator [7], timer circuit [8] and dual-slope digital converter [9]. Differing degrees of linearity are obtained in these techniques over limited ranges of temperature and have a limitation in accuracy due to component tolerances and temperature drift.…”

Input Impedance Calibration of Buffer-less Thermistor Temperature Measurement System

“…However, since the resistance changes in a nonlinear fashion according to temperature, many methods of linearization have been developed [4,5]. For the NTC thermistor, the resistance change can be altered easily to a voltage change by dividing the voltage with a simple voltage divider.…”