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3.6.9
Thermistor Resistance
The resistance of the thermistor at the operating temperature T
equation (11).
Equation (11):
× EXP
R
=R
X
25
R
:
Resistance at operating temperature Tx (°C)
X
30 kΩ ± 5% (25°C)
R
:
25
3950 k ± 2%
B:
T
:
Operating temperature (°C)
X
EXP (A): The Ath power of natural logarithm e (2.71828)
1000. 0
100. 0
RESISTANCE
(kΩ Ω Ω Ω )
10. 0
1. 0
-5
0
1
B ×
-
273 + T
X
5
10
15
20 25
30
35
TEMPERATURE (°C)
Figure 3-9 Thermistor Resistance vs. Temperature
(°C) is determined using the following
X
1
298
40
45
50
55 60
65
‰ · " x ( )
3-23
70 75
80
85
90
95 100
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