Inductance Thermometer

Abstract

Inductors with a large temperature coefficient of inductance have been fabricated with alloys which, as a result of rapid quenching from the liquid state, have new and unusual magnetic properties. These inductors have been incorporated in an oscillator which generates a frequency that depends upon temperature. The rate of frequency change with temperature, between room temperature and 1°K, is large enough to permit very accurate temperature measurements. The conversion of temperature to frequency makes possible easy transmission over long distances.