Feb. 25, 2022
The thermistor is a sensor resistor whose resistance value changes with temperature. According to the temperature coefficient, it is divided into positive temperature coefficient thermistor and negative temperature coefficient thermistor. Thermistors are applied in many fields. This article will tell you the working mode of the thermistor installed in the motor.
The Role of Thermistor:
1) Temperature Measurement. As a thermistor sensor for measuring temperature, the general structure is simpler and the price is relatively low;
2) Temperature Compensation. The thermistor sensor can compensate the humidity of certain components within a certain temperature range;
3) Overheat Protection. When the temperature is greater than the sudden change point, the current in the circuit can change from a few milliamps to tens of milliamps, so the relay operates to achieve overheating protection;
The Working Mode of the Thermistor:
The thermistor installed in the motor is usually installed close to the motor winding, in order to monitor the temperature rise of the motor winding. Generally, the negative temperature coefficient of the thermistor is used. When the temperature of the winding rises due to the motor overload, the resistance value of the thermistor will decrease. When the resistance value drops to a certain value due to temperature rise (this value is based on the characteristics of the motor or set as required) will cause the control circuit to act to cut off the motor circuit, stop the motor, and protect the motor.
The working mode of the thermistor in the motor is the just like the above mentioned. Hopefully it can be helpful to everyone.
Dongguan Zhixu Electronic Co., Ltd. (also JYH HSU(JEC)) has a full range of varistor and capacitor models with guaranteed quality. JEC has passed ISO9001:2015 quality management system certification; JEC safety capacitors (X capacitors and Y capacitors) and varistors have passed national certifications of the main industrial powers across the world; JEC ceramic capacitors, film capacitors and super capacitors are in compliance with environmental protection indicators. We have over 30 years of manufacturing experience. If you have technical questions or need samples, please contact us.
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