Selection of electric soldering iron heating core
The electric soldering iron's heating core serves as the device's central component. Pay attention to the following factors when buying an electric soldering iron because if the soldering iron head has no temperature and doesn't heat up, what good is the soldering iron?
One time when getting a new soldering iron core. It should be emphasized that the insulating porcelain's outer layer needs to be flawless and damage-free.
The second point is really crucial. To check whether the resistance value of the heating core of the electric soldering iron is normal, a multimeter is required.
Regular values are:
The 20w core's resistance is 2,4 kohms.
2 kohms is the 25W core resistance.
The resistance of the 100 watt core is 0.5 kohm, that of the 75 watt core is 0.6 kohm, and that of the 40 watt core is 1 kohm.
If the electric soldering iron's heating core's resistance value deviates from its expected value, The electric soldering iron's heating core will therefore quickly burn out after use.
