XXXIV. Impedance of a Thermistor at Low Frequencies
F.J. Hyde · Journal of Electronics and Control · 1955
The a.c. small-signal impedance of a directly heated thermistor has been measured between 0.116 and 2-34 c/s and the effective circuit time constant of the same thermistor has been measured as a function of the magnitude of an external series resistance. These complementary experimental results are shown to be in accord with the small-signal equivalent circuit (provided that the cooling process is Newtonian), which may be derived from the analysis of Burgess.