Temp. Sensing Part - Samsung SR-608EV Service Manual

8-5. Temp. sensing part

(Room Temp Sensor)
When Sensor is opened When sensor is cut off
MICOM input "HIGH" MICOM input "LOW"
1) Thermistor is used for sensing which has negative resistance coffiecient to the temperature.
R
TH
2) MICOM input voltage, VF of sensor is ( Vcc: 5V, Rth : Sensor resistance )
V
xVcc
F=
R + R
TH 24
3) Refer to conversion table for VF and RTH according to temperature.
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