The temperature coefficient of resistance for NTC (negative temperature coefficient) thermistors is in the range of -2%/k to -6%/k, which is approximately metal 10 times the temperature coefficient of resistance. They are heat-sensitive semiconductor resistors whose resistance value decreases with increasing temperature. The NTC thermistor's resistance value may change due to changes in the temperature of the surrounding environment or because of current flow and self-heating. His many applications are based on this trait. NTC thermistors are made of mixed oxide polycrystalline ceramics. This material's conduction process is highly intricate.
NTC (negative temperature coefficient) thermistor is a heat-sensitive semiconductor resistor whose resistance value decreases with the increase of temperature, and the temperature coefficient of resistance is in the range of -2%/k~-6%/k, which is about metal 10 times the temperature coefficient of resistance. The change of the resistance value of the NTC thermistor can be caused by the change of the external environment temperature, or it can be caused by the current flowing and self-heating. His various uses are based on this characteristic. NTC thermistors consist of polycrystalline ceramics of mixed oxides. The conduction mechanism of this material is quite complex.
NTC temperature sensors are usually composed of 2 or 3 metal oxides, mixed in similar popular clay, and calcined into dense sintered ceramics in a high-temperature furnace. Oxygen-bonded metals tend to donate free electrons. Ceramics are generally excellent insulators. But only theoretically, this is the case for thermistor-type ceramics when the temperature approaches absolute zero. However, as the temperature increases to more common ranges, thermal excitations eject more and more free electrons. As more electrons carry current through the ceramic, the effective resistance decreases. Resistance changes very sensitively with temperature.
The Structure of NTC Home Appliance Temperature Sensor For Heater Freezer And Ice Maker
Generally, it is composed of NTC thermistor, probe (metal shell or plastic shell, etc.), extension lead, and metal terminal or connector.
The Working Principle of Ntc Home Appliance Temperature Sensor For Heater Freezer And Ice Maker
Using NTC thermistor under a certain measurement power, the resistance value drops rapidly as the temperature rises. Utilizing this feature, the NTC thermistor can be used to determine the corresponding temperature by measuring its resistance value, so as to achieve the purpose of detecting and controlling the temperature.
The Applications of NTC Home Appliance Temperature Sensor For Heater Freezer And Ice Maker
The Features of NTC Home Appliances
High sensitivity, fast response