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How the Fuser thermistor works

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How the Fuser thermistor works

  • Categories:Industry news
  • Author:
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  • Time of issue:2021-08-03 15:53
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How the Fuser thermistor works

(Summary description)Fuser thermistor is a temperature-sensitive resistor, and its resistance value changes with temperature. What is the change? Let's discuss the working principle of Fuser thermistor together!

  • Categories:Industry news
  • Author:
  • Origin:
  • Time of issue:2021-08-03 15:53
  • Views:
Information

Fuser thermistor is a temperature-sensitive resistor, and its resistance value changes with temperature. What is the change? Let's discuss the working principle of Fuser thermistor together!

good price and quality Fuser thermistor on sales
Fuser thermistor is a kind of sensor resistance. The resistance value of Fuser thermistor changes with temperature, which is different from general fixed resistance. The resistance value of metal increases with the increase of planting degree, but the opposite is true for semiconductors. Its resistance value decreases sharply with the increase of temperature and shows nonlinearity.
When the temperature changes are the same, the resistance change of the Fuser thermistor is about 10 times that of the lead thermal resistance. Therefore, it can be said that the Fuser thermistor is particularly sensitive to temperature changes. This temperature characteristic of semiconductors is because the conduction mode of semiconductors is the conduction of carriers (electrons, holes). Since the number of carriers in a semiconductor is much less than the free electrons in a metal, its resistivity is very large. As the temperature rises, the number of carriers participating in conduction in the semiconductor will increase, so the conductivity of the semiconductor will increase, and its resistivity will also decrease.
Fuser thermistor is a thermal element made of the characteristic that the resistance value of a semiconductor changes significantly with temperature. It is made of certain metal oxides according to different formulations. In a certain temperature range, the temperature change of the measured medium can be known according to the change of the resistance value of the measured Fuser thermistor.
When the Fuser thermistor is installed in the circuit, when the ambient temperature is the same, the operating time of the Fuser thermistor is drastically shortened with the increase of the current; the Fuser thermistor has a shorter operating time and a smaller maintenance current when the ambient temperature is relatively high. And operating current. When the circuit is working normally, the temperature of the Fuser thermistor is close to room temperature, and the resistance is very small. When the circuit is connected in series, it will not hinder the flow of current; and when the circuit has an overcurrent due to a fault, the temperature of the Fuser thermistor will rise due to the increase in heating power. When the switching temperature is exceeded, the resistance will increase sharply, and the current in the loop will quickly decrease to a safe value.

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