184 



BELL SYSTEM TECHNICAL JOURNAL 



For a particular thermistor, the position of the log V versus log I plot is 

 shifted, as shown in Fig. 10, by changing the dissipation constant C. This 



IjO 

 MILLIAMPERES 



Fig. 9. — Logarithmic plot of static voltage-current curve for the same data as in Figure 

 8. The diagonal hnes give the values of resistance and power. 



B=3900 R= 50,000 OHMS T=300°K 



100 



10"' 10"" 10' ■" 10'' 10"' I 10 



CURRENT IN AMPERES 



Fig. lO.^Logarithmic plots of voltage versus current for three values of the dissipa- 

 tion constant C. These curves are calculated for the constants given in the upper jiart 

 of tlje figure. 



can be done by changing the air pressure surrounding the bead, changing 

 the medium, or changing the degree of thermal coupling between the thermi§- 



