Why can PTC air electric heater maintain stable performance under power supply voltage fluctuations?
Publish Time: 2024-05-15
The reason why PTC air electric heater can maintain stable performance under power supply voltage fluctuations is mainly due to its unique working principle and material characteristics.
PTC air electric heater utilizes the characteristics of PTC (positive temperature coefficient) material. This material has a special resistance property in which its resistance increases with temperature. When the PTC air electric heater is energized, current passes through the PTC material, and according to Ohm's law, the current is proportional to the resistance, and the heater begins to heat up.
As the temperature increases, the resistance of the PTC material gradually increases, causing the current to decrease. This characteristic makes the PTC air electric heater have a self-limiting temperature function. When the power supply voltage fluctuates, if the voltage rises, although the initial current may increase, as the temperature rises rapidly, the resistance of the PTC material will also increase rapidly, thus limiting further increase in current and preventing the heater from overheating. . On the contrary, if the voltage decreases, although the initial current may decrease, since the resistance of the PTC material decreases as the temperature decreases, the heater can still maintain a certain heating power, thus ensuring the performance of the heater under power supply voltage fluctuations. Stablize.
In addition, PTC air electric heaters are usually equipped with a temperature control device that can monitor and adjust the temperature of the heater in real time to ensure that it operates stably within the set temperature range. This temperature control device, combined with the self-limiting temperature function of the PTC material, further improves the performance stability of the PTC air electric heater under power supply voltage fluctuations.
In summary, PTC air electric heater can maintain stable performance under power supply voltage fluctuations, mainly due to its unique PTC material characteristics and self-limiting temperature function, as well as the auxiliary role of the temperature control device.
