value of b, is determined by other considerations, such as the de- 
gree of linearization when the compensated thermistors are put into 
a bridge circuit. 
The following is an example of the new compensation method. 
Eight Veco thermistors (No. 32A1) were used (see fig. A3). Good 
compensation was desired from 9°C to19°C, 7, and 7. were chosen 
to be 17°C and 13°C respectively. 7,, = 2564 ohms, 7, = 3004 ohms, 
71 = 3006 ohms, 772 = 3522 ohms. 
From eqs. (A6) and (A7): 
bd, = 228.65 ohms 
a, = 39,348 ohms 
From eq. (A8): 
R, = 2792.65 ohms 
FR, = 3232.65 ohms 
Using eqs. (A2) and (A8), the results in table Al are obtained. 
TABLE Al. VALUES OF a; AND by. 
Thermistor 
No. a, (ohms) D , (ohms) 
il 101, 540 154.7 
2 co | 229.5 
3 39, 252 0.7 
4 60,815 15. A 
5 158, 934 183.3 
6 73,216 TIO tl 
l 40,213 9.5 
8 58, 801 86.5 
ee 
37 
