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5-10. Temperature Sensing Circuit
5. Circuit Descriptions
1) A thermistor with a negative temperature coefficient (NTC) is used for a temperature
sensor.
2) Resistors, R 306 ∼ R310 and capacitors, C 301 ∼ C 305 are used for a noise protection
purpose.
3) For the F-sensor, the input voltage into the micro processor (MICOM), VF is calculated
by (Rth x Vcc)/(R303+ Rth), where Rth is a corresponding resistance to the thermistor’s
output (See Ref. 6 in Appendix).