The role of thermistor electric iron
The relative electric iron tin furnace, the temperature is slightly lower, and the electric iron when soldering the thermistor thermistor placed in a relatively short time, little effect on the electrical properties of the thermistor. Electric iron is best to use controllable temperature, the temperature is more stable!
It is a constant temperature electric iron, and the thermistor is temperature sensitive. The thermistor senses the temperature of the soldering iron and controls the heating circuit to switch on and off by the control circuit so as to keep the soldering iron constant temperature.
The thermistor has a characteristic, is more sensitive to temperature, when the temperature is relatively high, like an insulator, the heating wire to disconnect the power supply, the electric iron temperature. When the temperature drops and the conduction of the thermistor is electric iron and start heating, so it has the characteristic of constant temperature. The electric iron is suitable for the welding of electronic components and electronic devices with more sensitive temperature.
