Views: 0 Author: Site Editor Publish Time: 2019-07-18 Origin: Site
The thermistor is divided into a positive temperature coefficient thermistor and a negative temperature coefficient thermistor according to the temperature coefficient. Thermistors are typically characterized by temperature sensitivity and exhibit different resistance values at different temperatures. Thermally sensitive materials are generally classified into semiconductors, metals, and alloys. This article briefly describes the semiconductor thermistor material!
Such materials are single crystal semiconductors, polycrystalline semiconductors, glass semiconductors, semiconductors, and metal oxides. They all have very large temperature coefficient of resistance and high turtle resistance, and the sensitivity of the sensor made of it is also quite high. According to the temperature coefficient of resistance, it can also be divided into negative resistance temperature coefficient material and positive resistance temperature coefficient material. In the limited temperature range, the negative resistance temperature coefficient material a can reach -6*10-2/°C, and the positive resistance temperature coefficient material a can Up to -60*10-2/°C or more.
Such as drinking acid bismuth ceramic is an ideal semiconductor material with positive temperature coefficient of resistance. The above two materials are widely used in temperature measurement, temperature control, temperature compensation, switching circuit, overload protection and time delay, such as thermistor thermometer, thermistor switch and thermistor thermometer, heat The varistor switch and the thermistor delay relay faults and the like.
After reading the above content, do you have a deep understanding of the thermistor? If you have technical questions, please contact us and try to solve the problem for you.
