There are 4 common types of soldering irons
1, external heat type soldering iron
By the iron head, iron core, shell, wooden handle, power lead, plug and other parts. Because the iron head is installed inside the iron core, so it is called the external heat type electric iron. Soldering iron core is the key component of the soldering iron, it is the electric wire parallel winding in a hollow porcelain tube composition, the middle of the mica sheet insulation, and lead to two wires and 220V AC power supply connection. External thermal soldering iron specifications are many, commonly used 25W, 45W, 75W, 100W, etc., the greater the power the higher the temperature of the iron head.
2,Endothermic soldering iron
By the handle, connecting rod, spring clip, iron core, iron head composition. Because the iron core is installed inside the iron head, so the heat is generated quickly, high heat utilisation, therefore, it is called the endothermic type soldering iron. The common specifications of the endothermic soldering iron are 20W and 50W. Due to its high thermal efficiency, a 20W endothermic soldering iron is equivalent to an externally heated soldering iron of about 40W. The back end of the endothermic soldering iron is hollow, used for socketed on the connecting rod, and fixed with a spring clip, when you need to replace the head of the soldering iron, you must first exit the spring clip, and at the same time, use pliers to hold the head of the soldering iron, the front end, and slowly pull out, remember not to use too much force, in order to avoid damage to the connecting rod.
3, thermostatic iron
As a result of the thermostatic soldering iron head, equipped with a magnet type temperature controller, control the power time and achieve temperature control, that is, to the electric soldering iron when the temperature of the soldering iron rises, when it reaches a predetermined temperature, due to the strong magnet sensor to reach the Curie point and the magnetic disappearance, so that the magnetic core contacts are disconnected, this time it will stop power supply to the electric iron; when the temperature is lower than the strong magnet sensor of the Curie point, the strong magnet will resume When the temperature is lower than the Curie point of the strong magnet sensor, the strong magnet will recover the magnetism and suck the permanent magnet in the magnetic core switch, so that the contact of the control switch will turn on and continue to supply power to the electric iron. So the cycle is repeated, it will achieve the purpose of controlling the temperature.
4,Suction soldering iron
Is the piston type tin sucker and soldering iron dissolved into one of the desoldering tools. It has easy to use, flexible, wide range of characteristics. The shortcomings of this kind of tin soldering iron is only one soldering point each time for desoldering.
