Views: 1 Author: Site Editor Publish Time: 2019-08-19 Origin: Site
Due to the variety and type of thermistor, whether you choose PTC positive temperature coefficient thermistor or NTC negative temperature coefficient thermistor, you should choose the model you need according to the circuit.
(1) Positive temperature coefficient Thermistor (PTC) is generally used for refrigerator compressor starting circuit, color picture tube degaussing circuit, motor over current overheat protection circuit, current limiting circuit and constant temperature electric heating circuit. The thermistor suitable for its starting can be selected according to different types of compressors to achieve a good starting effect;
(2) Degaussing thermistors used in color televisions and computer monitors. According to the working voltage (220V or 110V), working current and degaussing coil specifications of the TV and display, the degaussing thermistor with the nominal resistance, starting current and working voltage can meet the requirements. Models with nominal resistance, switching temperature, operating current and dissipated power that meet the requirements of the application circuit should be selected;
(3) Negative temperature coefficient Thermistor (NTC) is generally used for microwave power measurement, temperature detection, temperature compensation, temperature control and voltage regulation in various electronic products. When selecting, it should be selected according to the needs of the application circuit. Type and model. The commonly used NTC thermistor for voltage regulation can select the thermistor voltage regulator value and operating current according to the reference voltage value of the application circuit design.
