Linearized Thermistor Multivibrator Bridges for Temperature Measurement

Methods for output voltage linearization of a thermistor astable multivibrator bridge (AMB) and a monostable multivibrator bridge (MMB) are given. In addition to higher sensitivity in comparison with Wheatstone bridge, thermistor multivibrator bridges can have direct application in telemetering and digital recording of temperature. The linearity condition of thermistor AMB and MMB are independent of indicator resistance. Experimental multivibrator bridges with IC differential transistor pairs have shown excellent stability at ambient temperature variations.