Thermistor is a resistor that is usually used to measure temperature. Thermiastor will work if exposed to temperatures or temperature, whereby when the temperature of the thermistor changes in thermistor resistance will also vary. Thermistor is generally made of ceramic or polymer materials. Reference standard thermistor temperature is at room temperature is 25 ° C.
NTC (Negative Temperature Coefficienct)
At the time the surrounding temperature rise resistance value decreases. NTC is a semiconducting ceramic resistor produced by sintering the material at high temperatures, and using metal oxide as the main ingredient.
PTC (Positive Temperature coefficient thermistor)
At the time the surrounding temperature rise resistance value increases.PTC is made of the BaTiO3 ceramics.
BaTiO3 ceramics is a kind of typical ferroelectric material with a resistivity greater than 10 12 Ω.cm temperatures below normal.
Resistance value will decrease rapidly when the temperature
rises above the surrounding temperature is a key point.
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