4-171
200
//
200
//
10
2
1
PTC
PTC
R
R
R
V
-------- Formula (1)
1330
550
Resistance (
Ω)
Temperature
Class F
150°C
Class H
180°C
Tr'
Tr - 5
Tr
Tr + 5
Tr
:
Temperature threshold value
(a) PTC Thermistor Characteristics
(b) PTC Thermistor
connections
Divider Resistor(R)
1~2K
Ω
PTC Thermistor
+
10V
AI 2
GND
Internal circuit
200K
Ω
Figure 4.3.65 (a) PTC Thermistor Characteristics (b) PTC Thermistor Connections